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Image Subject Name Scientific Name Description
5487859 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform swelling on branch
5492313 rust Pucciniastrum americanum Rust pustules developing on yellow raspberry fruit
5484087 rust Pucciniastrum americanum A rust pustule on raspberry fruit with spores.
5486241 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar apple rust gall and telial horns on juniper at Secrest Arboretum in Wooster Ohio
5486242 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar apple rust disease on apple tree at Cox Arboretum in Dayton OH
5490476 white pine blister rust Cronartium ribicola Infected leaf top side. Odd line pattern may have other abiotic cause. 
5490475 white pine blister rust Cronartium ribicola Symptomatic infected leaf underside
5490474 white pine blister rust Cronartium ribicola Uredinia on leaf underside (few telial horns present)
5490473 white pine blister rust Cronartium ribicola Teliospores
5490471 white pine blister rust Cronartium ribicola Urediniospores
5490472 white pine blister rust Cronartium ribicola Urediniospore showing ornamentation
5490470 white pine blister rust Cronartium ribicola Vertical section of uredinia
5490469 white pine blister rust Cronartium ribicola Vertical section of uredinium
5490468 white pine blister rust Cronartium ribicola Teliospores
5490467 white pine blister rust Cronartium ribicola United teliospores which make up the telial horn
5490466 white pine blister rust Cronartium ribicola Base of telia with telial horns emerging
5490465 white pine blister rust Cronartium ribicola Pale brown telial horns growing from leaf underside. Yellow is from urediniospores.
5490464 white pine blister rust Cronartium ribicola Pale brown telial horns growing from leaf underside. Bright yellow is from urediniospores.
5490463 white pine blister rust Cronartium ribicola Pale brown telial horns growing from leaf underside. Bright yellow is from urediniospores.
5490462 white pine blister rust Cronartium ribicola Pale brown telial horns growing from leaf underside. Bright yellow is from urediniospores.
1573941 dry bean rust Uromyces appendiculatus Close-up of the underside of a diseased leaf. September 1997
1573942 dry bean rust Uromyces appendiculatus Close-up of the underside of a diseased leaf. September 1997
1573883 dry bean rust Uromyces appendiculatus Close up of diseased leaf. August 1997
1573884 dry bean rust Uromyces appendiculatus Close up of underside of diseased leaf. August 1997
1573882 dry bean rust Uromyces appendiculatus Diseased foliage. August 1997
5492817 rust Uromyces graminicola Teliospore of Uromyces graminicola from switchgrass
5492818 rust Uromyces graminicola Teliospores of Uromyces graminicola on switchgrass
5492819 rust Uromyces graminicola Teliospores of Uromyces graminicola on switchgrass
5492820 rust Uromyces graminicola Teliospore of Uromyces graminicola
5492821 rust Uromyces graminicola Teliospore of Uromyces graminicola from switchgrass
5492822 rust Uromyces graminicola Teliospores of Uromyces graminicola on switchgrass
5493734 rust Puccinia emaculata Puccinia emaculata teliospores
5493735 rust Puccinia emaculata Puccinia emaculata teliospores
5493736 rust Puccinia emaculata Puccinia emaculata teliospores  
5493737 rust Puccinia emaculata Puccinia emaculata teliospores
5492699 rust Thekopsora minima leaf rust
5492700 rust Thekopsora minima leaf rust
5492701 rust Thekopsora minima
5492706 needle rust Pucciniastrum goeppertianum witches broom in prune field
5492707 needle rust Pucciniastrum goeppertianum
5491400 Ravenelia rusts Ravenelia spp. aecia with aeciospores
5491401 Ravenelia rusts Ravenelia spp. aecia containing aeciospores
5492776 rust Puccinia malvacearum Teliospores Host: Alcea spp.
5492777 rust Puccinia malvacearum Teliospore Host: Alcea spp.
5492778 rust Puccinia malvacearum
5492779 rust Puccinia malvacearum Rust pustules
5492780 rust Puccinia malvacearum Rust pustules
5492781 rust Puccinia malvacearum Rust pustules
5491437 rust Puccinia salviicola Telium
5491438 rust Puccinia salviicola Telia and Uredinia
5491439 rust Puccinia salviicola Telium and Uredinium
5491440 rust Puccinia salviicola Telia and Uredinia
5491441 rust Puccinia salviicola Uredinia
5491445 rust Puccinia salviicola Signs and symptoms
5491446 rust Puccinia salviicola Signs and symptoms
5491447 rust Puccinia salviicola Signs and symptoms
5491448 rust Puccinia salviicola Signs and symptoms
5490450 quince rust Gymnosporangium clavipes Canker on infected stem with ruptured white peridia and orange aeciospores obvious
5490449 quince rust Gymnosporangium clavipes Canker on infected stem
5490448 quince rust Gymnosporangium clavipes Aeciospore, sectional view
5490447 quince rust Gymnosporangium clavipes Aeciospore, surface view
5490446 quince rust Gymnosporangium clavipes Verrucose papillae on surface of peridial cells
5490445 quince rust Gymnosporangium clavipes Peridial cells, surface view of two aeciospores, and air bubble
5490444 quince rust Gymnosporangium clavipes Ruptured white peridia and orange aeciospores on surface of canker
5490497 orange rust Arthuriomyces peckianus Infected foliage covered with aecial pustules
5490496 orange rust Arthuriomyces peckianus Aecia on leaf underside
5490495 orange rust Arthuriomyces peckianus Aecia on leaf underside
5490494 orange rust Arthuriomyces peckianus Aecia on leaf underside
5490493 orange rust Arthuriomyces peckianus Aeciospores, surface view
5490492 orange rust Arthuriomyces peckianus Aeciospore, surface view
5490491 orange rust Arthuriomyces peckianus Aeciospores, sectional view
5490490 orange rust Arthuriomyces peckianus Aeciospores, sectional view
5490489 orange rust Arthuriomyces peckianus Aeciospore, sectional view
5490488 orange rust Arthuriomyces peckianus Vertical secion of aecium.
5490487 orange rust Arthuriomyces peckianus Orange aecia bordered by white ruptured peridium.
5490486 orange rust Arthuriomyces peckianus Orange aecia bordered by white ruptured peridium.
5490485 orange rust Arthuriomyces peckianus Aecispores in water germinate with a long germ tube.
5490484 orange rust Arthuriomyces peckianus Aecispores in water germinate with a long germ tube.
5490456 crown rust Puccinia coronata Aeciospores amd peridial cells
5490455 crown rust Puccinia coronata Vertical section of aecium
5490454 crown rust Puccinia coronata Vertical section of aecium
5490453 crown rust Puccinia coronata Vertical section of aecium
5490452 crown rust Puccinia coronata Aecia on leaf
5490451 crown rust Puccinia coronata Aecia on leaf
5430487 quince rust Gymnosporangium clavipes Swollen hawthorn twig covered with aecia of the cedar-quince rust fungus, Gymnosporangium clavipes.
1573114 wheat leaf rust Puccinia recondita Leaf rust on wheat. May 1997
1573113 rust Puccinia hordei Leaf rust on wheat. May 1997
1573112 wheat leaf rust Puccinia recondita Leaf rust on wheat. May 1997
5487860 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform swelling on branch
5487953 quince rust Gymnosporangium clavipes teliospore
5487879 quince rust Gymnosporangium clavipes rust sporulation
5487880 quince rust Gymnosporangium clavipes Cankered branch with rust spoulation
5487878 quince rust Gymnosporangium clavipes Spindle-shaped swellings on branch
5476487 hemlock needle rust Pucciniastrum vaccinii Urediniospores
5476488 hemlock needle rust Pucciniastrum vaccinii Leaf spots on upper leaf surface
5476489 hemlock needle rust Pucciniastrum vaccinii Leaf spots on lower leaf surface
5476490 hemlock needle rust Pucciniastrum vaccinii Signs (uredinia) on lower leaf surface
5476485 hemlock needle rust Pucciniastrum vaccinii Uredinia on leaf underside  
5476486 hemlock needle rust Pucciniastrum vaccinii Uredinium vertical section
5488254 pine needle rusts Coleosporium spp. Vertical section of aecium
5488251 pine needle rusts Coleosporium spp. Aecium on needle
5488252 pine needle rusts Coleosporium spp. Aecium on needle
5488253 pine needle rusts Coleosporium spp. Aecium on needle
5488255 pine needle rusts Coleosporium spp. Vertical section of aecium
5488256 pine needle rusts Coleosporium spp. Vertical section of aecium
5488257 pine needle rusts Coleosporium spp. Vertical section of aecium
5488258 pine needle rusts Coleosporium spp. A section of the aecial peridium showing the whitish peridial cells. The yellow color is from aeciospores.
5488259 pine needle rusts Coleosporium spp. Surface view of aeciospores
5488260 pine needle rusts Coleosporium spp. Sectional view of aeciospores
5486065 Mayapple rust Puccinia podophylli Telia on leaf.
5222081 cedar-apple rust Gymnosporangium juniperi-virginianae cedar apple rust life cycle
1502006 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust life cycle - title slide
1467417 white pine blister rust Cronartium ribicola teliospores germinating to form basidiospores
5486924 puccinia rusts Puccinia spp. urediniospores
5486925 puccinia rusts Puccinia spp. urediniospores
5486926 puccinia rusts Puccinia spp. urediniospores
5486129 crown rust Puccinia coronata Infected foliage
5486128 crown rust Puccinia coronata Urediniospore on stalk
5486127 crown rust Puccinia coronata Urediniospores
5486126 crown rust Puccinia coronata Sectional view of urediniospores
5486125 crown rust Puccinia coronata Surface view of urediniospores
5486124 crown rust Puccinia coronata Sectional view of urediniospores
5486123 crown rust Puccinia coronata Uredinium in leaf
5486122 crown rust Puccinia coronata Sectional view of urediniospores
5486121 crown rust Puccinia coronata Vertical section of uredinium
5486120 crown rust Puccinia coronata Vertical section of uredinium
5486991 common corn rust Puccinia sorghi
5485052 rust Puccinia zoysiae Foliar symptoms of rust on zoysiagrass caused by the fungus Puccinia zoysia.
5485053 rust Puccinia zoysiae Urediniospores of zoysia rust
5485051 rust Puccinia zoysiae
5361050 dry bean rust Uromyces appendiculatus Diagram of the life cycle of bean rust (Uromyces appendiculatus).
5485066 wheat stem rust Puccinia graminis Poa pratensis 'Langara'
5485067 wheat stem rust Puccinia graminis Poa pratensis 'Langara'
5485068 wheat stem rust Puccinia graminis Poa pratensis 'Langara'
5485059 wheat stem rust Puccinia graminis Poa pratensis 'Langara'
5485060 wheat stem rust Puccinia graminis Poa pratensis 'Langara'
5485061 wheat stem rust Puccinia graminis Poa pratensis 'Langara'
5485062 wheat stem rust Puccinia graminis Poa pratensis 'Langara'
5485063 wheat stem rust Puccinia graminis Poa pratensis 'Langara'
5485064 wheat stem rust Puccinia graminis Poa Pratensis 'Langara'
5485065 wheat stem rust Puccinia graminis Poa pratensis 'Langara'
5485049 brown rust Puccinia melanocephala Teliospores of Puccinia melanocephala
5486069 Mayapple rust Puccinia podophylli Teliospores.
5486068 Mayapple rust Puccinia podophylli Teliospores.
5486067 Mayapple rust Puccinia podophylli Vertical section of telium with teliospores.
5486066 Mayapple rust Puccinia podophylli Vertical section of telium.
1593052 white pine blister rust Cronartium ribicola Branch flag
5411481 quince rust Gymnosporangium clavipes
5411482 quince rust Gymnosporangium clavipes
5483031 rust Puccinia malvacearum Hollyhock rust pustules on the underside of the leaf.
5483032 rust Puccinia malvacearum Hollyhock rust
5483033 rust Puccinia malvacearum Hollyhock rust
5263067 daylily rust Puccinia hemerocallidis
5465568 common corn rust Puccinia sorghi
5479908 Melampsora rust Melampsora epitea leaf spots  
5479825 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar-apple rust galls
5479826 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar-apple rust gall
5479832 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar rust gall
5479835 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar-Apple rust gall
5479836 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar-apple rust galls
5479838 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar-apple rust galls
5479839 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar-apple rust galls
5479840 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar-apple rust gall
5479842 cedar-apple rust Gymnosporangium juniperi-virginianae cedar apple rust gall
5479843 cedar-apple rust Gymnosporangium juniperi-virginianae cedar-apple rust gall
5479922 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar-apple rust galls
5479858 pine needle rusts Coleosporium spp. Rust pustules
5479859 pine needle rusts Coleosporium spp. Rust pustule 
5479869 Melampsora rust Melampsora epitea Sporulation on underside of leaf
5479870 Melampsora rust Melampsora epitea Sporulation on underside of leaf
5479873 mint rust Puccinia menthae sexual and asexual sporesurediospores (globoid to ellipsoid, aseptate) and darker septate teliospores
5479927 pine needle rusts Coleosporium spp. rust on needles
5479928 pine needle rusts Coleosporium spp. rust on needles
5479931 pine needle rusts Coleosporium spp. rust on needles
1398218 eastern pine gall rust Cronartium quercuum Branch gall
5411480 quince rust Gymnosporangium clavipes
5476513 rust Puccinia malvacearum Telia on leaf underside
5476512 rust Puccinia malvacearum Teliospore
5476453 fir-fern rust Uredinopsis spp. Symptoms
5476511 rust Puccinia malvacearum Vertical section of telium showing teliospore production
5476509 rust Puccinia malvacearum Vertical section of telium with teliospore evident
5476510 rust Puccinia malvacearum Vertical section of telium with teliospore evident
5476508 rust Puccinia malvacearum Vertical section of telium
5476450 fir-fern rust Uredinopsis spp. Ruptured peridium with aeciospores spilling out
5476451 fir-fern rust Uredinopsis spp. Surface view of aeciospores
5476452 fir-fern rust Uredinopsis spp. Aeciospores
5476447 fir-fern rust Uredinopsis spp. Unruptured aecia emerging from needle
5476448 fir-fern rust Uredinopsis spp. Aecia emerging from needle
5476449 fir-fern rust Uredinopsis spp. Ruptured aecia emergent from needle
5476445 fir-fern rust Uredinopsis spp. Peridial cells
5476446 fir-fern rust Uredinopsis spp. Aecia emerging from needle
5476443 fir-fern rust Uredinopsis spp. Rutured aecia emerged from needle
5476444 fir-fern rust Uredinopsis spp. Vertical section of aecium in needle
5476442 fir-fern rust Uredinopsis spp. Rutured aecia emerged from needle
5476465 Japanese apple rust Gymnosporangium yamadae Aeciospores and peridial cell
5476464 Japanese apple rust Gymnosporangium yamadae Aeciospores
5476461 Japanese apple rust Gymnosporangium yamadae Peridial cells
5476462 Japanese apple rust Gymnosporangium yamadae Surface of aeciospores
5476463 Japanese apple rust Gymnosporangium yamadae Aeciospores
5476460 Japanese apple rust Gymnosporangium yamadae Peridial cells
5476459 Japanese apple rust Gymnosporangium yamadae Aecia with conical peridia
5476457 Japanese apple rust Gymnosporangium yamadae Aecia with conical peridia
5476458 Japanese apple rust Gymnosporangium yamadae Aecia with conical peridia
5476507 rust Puccinia malvacearum Symptoms
5473719 rust Cerotelium fici Symptoms of fig rust visible on the upper leaf surface.
5473720 rust Cerotelium fici Pustules of fig rust on the lower leaf surface.
5473721 rust Cerotelium fici Premature defoliation of a susceptible fig variety due to fig rust.
5474053 quince rust Gymnosporangium clavipes Aecia on hawthorn berry
5474054 quince rust Gymnosporangium clavipes Aecia on hawthorn berry
5474055 quince rust Gymnosporangium clavipes dense aecia growth on hawthorn berry
5436299 rust Puccinia jaceae var. solstitialis rearing setup for propagating rust fungus
5435664 bramble leaf rust Phragmidium violaceum Paraphases of rust fungus. Host also known as (R. disclor, R. procerus)
5474050 wheat stem rust Puccinia graminis Pustule with emerging uridiniospores on wheat leaf
5474052 wheat stem rust Puccinia graminis Pustules with emerging uridiniospores on a wheat leafe
5410641 wheat leaf rust Puccinia recondita Symptoms of wheat rust on leaves.
5410640 wheat leaf rust Puccinia recondita Symptoms of wheat rust in small plots.
5408107 cedar-apple rust Gymnosporangium juniperi-virginianae
5461160 rust Uromyces ari-triphylli Cross-section of aecium
5461161 rust Uromyces ari-triphylli Cross-section of aecium
5461162 rust Uromyces ari-triphylli Cross-section of aecium
5461163 rust Uromyces ari-triphylli Aeciospore production at floor of aecium, cross-section.
5461164 rust Uromyces ari-triphylli Aeciospores
5458628 dry bean rust Uromyces appendiculatus Teliospores.
5458084 Japanese apple rust Gymnosporangium yamadae
5461133 rust Puccinia hyssopi Telium on leaf
1572342 rose rust Phragmidium mucronatum Rose rust caused by Phragmidium mucronatum.  July 1996
1572341 rose rust Phragmidium mucronatum Rose rust caused by Phragmidium mucronatum.  July 1996
1572340 rose rust Phragmidium mucronatum Rose rust caused by Phragmidium mucronatum. July 1996
5454607 cedar-apple rust Gymnosporangium juniperi-virginianae
5461136 rust Puccinia hyssopi Teliospores
5461134 rust Puccinia hyssopi Cross-section of telium
5461135 rust Puccinia hyssopi Teliospores
5461132 rust Puccinia hyssopi Telia on leaf
1572114 rust Puccinia cynodontis Leaf blade of bermudagrass showing lesions and pustules of the pathogen.  Denim jeans make a poor background. June 1996
5461615 puccinia rusts Puccinia spp. rust on buckthorn
5473181 crown rust Puccinia coronata Puccinia coronata (crown rust) on Rhamnus alnifolia
5473182 crown rust Puccinia coronata Puccinia coronata (crown rust) on Rhamnus alnifolia
5458656 spruce needle rust Chrysomyxa weirii Individual Chrysomyxa weirii rust pustule swelling and splitting open on a blue spruce needle.
5443599 rust Gymnosporangium nidus-avis Leaf spots caused by Gymnosporangium nidus-avis on the upper leaf surface. Dark flecks towards the center of the lesion are spermagonia.
5443600 rust Gymnosporangium nidus-avis Aecia of Gymnosporangium nidus-avis on the lower leaf surface.
5443598 rust Gymnosporangium nidus-avis Nascent and mature aecia of Gymnosporangium nidus-avis on the lower leaf surface.
5443596 rust Gymnosporangium nidus-avis Nascent and mature aecia of Gymnosporangium nidus-avis on the lower leaf surface.
5443594 rust Gymnosporangium nidus-avis Nascent and mature aecia of Gymnosporangium nidus-avis on the lower leaf surface.
5443592 rust Gymnosporangium nidus-avis Nascent aecia of Gymnosporangium nidus-avis on the lower leaf surface.
5443593 rust Gymnosporangium nidus-avis Nascent and mature aecia of Gymnosporangium nidus-avis on the lower leaf surface.
5443595 rust Gymnosporangium nidus-avis Leaf spots caused by Gymnosporangium nidus-avis on the upper leaf surface.
5461532 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on trunk
5470097 soybean rust Phakopsora pachyrhizi
5470093 soybean rust Phakopsora pachyrhizi
5470094 soybean rust Phakopsora pachyrhizi
5470090 soybean rust Phakopsora pachyrhizi
5470121 soybean rust Phakopsora pachyrhizi
5470122 soybean rust Phakopsora pachyrhizi
5470123 soybean rust Phakopsora pachyrhizi
5470124 soybean rust Phakopsora pachyrhizi
5470125 soybean rust Phakopsora pachyrhizi
5470116 soybean rust Phakopsora pachyrhizi
5470117 soybean rust Phakopsora pachyrhizi
5470119 soybean rust Phakopsora pachyrhizi
5470120 soybean rust Phakopsora pachyrhizi
5470113 soybean rust Phakopsora pachyrhizi
5470114 soybean rust Phakopsora pachyrhizi
5470115 soybean rust Phakopsora pachyrhizi
5470108 soybean rust Phakopsora pachyrhizi
5470109 soybean rust Phakopsora pachyrhizi
5470110 soybean rust Phakopsora pachyrhizi
5470111 soybean rust Phakopsora pachyrhizi
5470112 soybean rust Phakopsora pachyrhizi
5470103 soybean rust Phakopsora pachyrhizi
5470104 soybean rust Phakopsora pachyrhizi
5470105 soybean rust Phakopsora pachyrhizi
5470106 soybean rust Phakopsora pachyrhizi
5470107 soybean rust Phakopsora pachyrhizi
5470101 soybean rust Phakopsora pachyrhizi
5470102 soybean rust Phakopsora pachyrhizi
5470099 soybean rust Phakopsora pachyrhizi
5470085 soybean rust Phakopsora pachyrhizi
5470086 soybean rust Phakopsora pachyrhizi
5470087 soybean rust Phakopsora pachyrhizi
5470088 soybean rust Phakopsora pachyrhizi
5470080 soybean rust Phakopsora pachyrhizi
5470081 soybean rust Phakopsora pachyrhizi
5470082 soybean rust Phakopsora pachyrhizi
5470083 soybean rust Phakopsora pachyrhizi
5470084 soybean rust Phakopsora pachyrhizi
5470077 soybean rust Phakopsora pachyrhizi
5470078 soybean rust Phakopsora pachyrhizi
5470079 soybean rust Phakopsora pachyrhizi
5470072 soybean rust Phakopsora pachyrhizi
5470073 soybean rust Phakopsora pachyrhizi
5470074 soybean rust Phakopsora pachyrhizi
5470075 soybean rust Phakopsora pachyrhizi
5470076 soybean rust Phakopsora pachyrhizi
5470098 soybean rust Phakopsora pachyrhizi
5470095 soybean rust Phakopsora pachyrhizi
5470096 soybean rust Phakopsora pachyrhizi
5470071 soybean rust Phakopsora pachyrhizi
5470070 soybean rust Phakopsora pachyrhizi
5461534 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on trunk
5461535 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on limb
5461536 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on limb
5461537 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on limb
5461531 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on trunk
5461533 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on trunk
5465565 common corn rust Puccinia sorghi
5465566 common corn rust Puccinia sorghi
5465567 common corn rust Puccinia sorghi
5465562 common corn rust Puccinia sorghi
5465563 common corn rust Puccinia sorghi
5465564 common corn rust Puccinia sorghi
5465559 common corn rust Puccinia sorghi
5465560 common corn rust Puccinia sorghi
5465561 common corn rust Puccinia sorghi
5465558 common corn rust Puccinia sorghi
5465557 common corn rust Puccinia sorghi
5458633 dry bean rust Uromyces appendiculatus Infected leaf with telia on lower surface.
5461165 rust Uromyces ari-triphylli Infected leaf and flower covered with aecia
5459189 onion rust Puccinia allii Urediniospores
5459190 onion rust Puccinia allii Infected leaf
5459187 onion rust Puccinia allii Telia (brown) and uredinia (yellow) on diseased leaf
5459188 onion rust Puccinia allii Urediniospores, surface view
5459185 onion rust Puccinia allii Teliospores
5459186 onion rust Puccinia allii Uredinia pustules on leaf
5459184 onion rust Puccinia allii Teliospores
5459182 onion rust Puccinia allii Teliospore
5459183 onion rust Puccinia allii Teliospores
5459180 onion rust Puccinia allii Cross-section of telium
5459181 onion rust Puccinia allii Cross-section of telium with teliospores
5459178 onion rust Puccinia allii Urediniospores
5459179 onion rust Puccinia allii Telium
5459177 onion rust Puccinia allii Floor of uredinium
5459175 onion rust Puccinia allii Uredinium with air bubble
5459176 onion rust Puccinia allii Urediniospores
5459253 rust Puccinia heucherae Teliospore
5459251 rust Puccinia heucherae Teliospores
5459252 rust Puccinia heucherae Teliospore closeup at stalk
5459250 rust Puccinia heucherae Teliospores
5459248 rust Puccinia heucherae Telium cross-section with teliospore poking out
5459249 rust Puccinia heucherae Telium cross-section with teliospore poking out
5459247 rust Puccinia heucherae Telium cross-section
5459245 rust Puccinia heucherae Telia on leaf underside
5459246 rust Puccinia heucherae Telium cross-section
5459244 rust Puccinia heucherae Telia on leaf undersides
5459243 rust Puccinia heucherae Telia on leaf underside
5459242 rust Puccinia heucherae Telium on leaf underside
5458707 Japanese apple rust Gymnosporangium yamadae Aeciospores and peridial cells.
5458708 Japanese apple rust Gymnosporangium yamadae Close view of aeciospores
5458709 Japanese apple rust Gymnosporangium yamadae Aeciospores and peridial cells
5458680 Japanese apple rust Gymnosporangium yamadae Gall on juniper.
5458710 Japanese apple rust Gymnosporangium yamadae Teliospores from gall on juniper
5458655 spruce needle rust Chrysomyxa weirii Chrysomyxa weirii spores
5458705 Japanese apple rust Gymnosporangium yamadae Close-up of surface of gall on Juniper.
5458706 Japanese apple rust Gymnosporangium yamadae Close view of the spore producing surface of a gall.
5458085 Japanese apple rust Gymnosporangium yamadae Upper leaf surface
5458657 spruce needle rust Chrysomyxa weirii Immature Chrysomyxa weirii rust pustules on blue spruce needles. Note slight swellings where fruiting bodies are developing within yellow-orange spots on needles.
5458658 spruce needle rust Chrysomyxa weirii Immature Chrysomyxa weirii rust pustules on blue spruce needles. Note slight swellings where fruiting bodies are developing within yellow-orange spots on needles.
5458659 spruce needle rust Chrysomyxa weirii Chrysomyxa weirii rust pustules on blue spruce needles showing the release of masses of infectious spores.
5458682 orange rust Arthuriomyces peckianus Black raspberry infected with the Orange Rust fungus Arthuriomyces peckianus and exhibiting numerous bright orange pustules developing on the undersides of leaves.
5458683 orange rust Arthuriomyces peckianus Black raspberry infected with the Orange Rust fungus Arthuriomyces peckianus and exhibiting numerous bright orange pustules developing on the undersides of leaves.
5458631 dry bean rust Uromyces appendiculatus Infected leaves upper surface.
5458632 dry bean rust Uromyces appendiculatus Infected leaves lower surface.
5458081 Japanese apple rust Gymnosporangium yamadae Aecia on the underside of a crabapple leaf.
5458376 rust Puccinia pelargonii-zonalis Lesions on underside of leaf, close view
5458377 rust Puccinia pelargonii-zonalis a single teliospore
5458378 rust Puccinia pelargonii-zonalis Urediniospores
5458379 rust Puccinia pelargonii-zonalis Close view of one lesion on the underside of an infected leaf. Note the pustules breaking open in the center where spores are being liberated.
5458380 rust Puccinia pelargonii-zonalis Urediniospores and Teliospores.
5458381 rust Puccinia pelargonii-zonalis Numerous urediniospores with a few two celled teliospores also visible.
5458382 rust Puccinia pelargonii-zonalis Foliar lesions as viewed on underside of infected leaf.
5458383 rust Puccinia pelargonii-zonalis Numerous foliar lesions as viewed on underside of infected leaf.
5458384 rust Puccinia pelargonii-zonalis Underside of severely infected geranium leaf. Note the lesion on the petiole.
5458385 rust Puccinia pelargonii-zonalis Upper surface of severely infected geranium leaf. Note the lesion on the petiole.
5458386 rust Puccinia pelargonii-zonalis A single lesion on the underside of an infected leaf. This lesion looks like a happy face.
5458630 dry bean rust Uromyces appendiculatus Teliospore
5458629 dry bean rust Uromyces appendiculatus Teliospores
5458627 dry bean rust Uromyces appendiculatus Teliospores.
5458626 dry bean rust Uromyces appendiculatus Telia on leaf underside.
5458625 dry bean rust Uromyces appendiculatus Telia on leaf underside
5458601 quince rust Gymnosporangium clavipes Cedar-quince rust aecia on hawthorn fruit.
5458602 quince rust Gymnosporangium clavipes
5458596 juniper-pear rust Gymnosporangium sabinae Orangish lesion on the upperside of a pear leaf.
5458358 rust Puccinia malvacearum Hollyhock rust pustules on lower surface of hollyhock leaf.
5458066 chrysanthemum white rust Puccinia horiana Chrysanthemum white rust pustules on the lower surface of the leaf.
5458067 chrysanthemum white rust Puccinia horiana Chrysanthemum white rust pustules on the lower surface of the leaf.
5458068 chrysanthemum white rust Puccinia horiana Chrysanthemum white rust pustules on the lower surface of the leaf.
5458069 chrysanthemum white rust Puccinia horiana Chrysanthemum white rust pustules on stems of chrysanthemum sp.
5458051 quince rust Gymnosporangium clavipes Gelatinous telial mass oozing out of small branch swelling.
5454462 bramble leaf rust Phragmidium violaceum
5454463 bramble leaf rust Phragmidium violaceum
1460045 chrysanthemum white rust Puccinia horiana found in Long Island, New York on October 17, 2002
1470127 stalactiform blister rust Cronartium coleosporioides aecia
5454322 Southern corn rust Puccinia polysora
5454323 Southern corn rust Puccinia polysora Urediniospores
5454324 Southern corn rust Puccinia polysora Urediniospores
5454325 Southern corn rust Puccinia polysora urediniospores
5449556 Southern corn rust Puccinia polysora teliospores
5449557 Southern corn rust Puccinia polysora teliospores
5449558 Southern corn rust Puccinia polysora teliospores
5449559 Southern corn rust Puccinia polysora teliospores
2169094 onion rust Puccinia allii spores
4215075 cedar-apple rust Gymnosporangium juniperi-virginianae telia on cedar
1467412 white pine blister rust Cronartium ribicola
4215023 eastern pine gall rust Cronartium quercuum aecia
2251001 western gall rust Endocronartium harknessii wind breakage at gall site
5407872 orange rust Gymnoconia nitens Black raspberry leaves covered with Arthuriomyces peckianus (or Gymnoconia nitens) pustules (orange rust)
5443597 rust Gymnosporangium nidus-avis Nascent and mature aecia of Gymnosporangium nidus-avis on the lower leaf surface.
0355049 pine needle rusts Coleosporium spp.
5408663 daylily rust Puccinia hemerocallidis Orange pustules on leaves, leaf yellowing Pathogen type: Fungus
5443108 rust Puccinia punctiformis Young shoots emerge with undersides of leaves and stem covered in pycnia which are later replaced with uredinia and telia
5443109 rust Puccinia punctiformis Uredinia cover the underside of leaves and stem.
5443110 rust Puccinia punctiformis Uredinia cover the underside of leaves and stem.
2733022 fusiform rust Cronartium quercuum f.sp. fusiforme rust hazard map for the southeast United States
1467303 comandra blister rust Cronartium comandrae
2169096 onion rust Puccinia allii
4822063 ash rusts Puccinia sparganioides Leaf distortion, petiole hypertrophy and distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue.
4213003 spruce needle rusts Chrysomyxa spp. heavy infestation, note color
3035084 fusiform rust Cronartium quercuum f.sp. fusiforme
2733058 fusiform rust Cronartium quercuum f.sp. fusiforme canker
2733023 fusiform rust Cronartium quercuum f.sp. fusiforme rust hazard map for the southeast United States
2652009 spruce broom rust Chrysomyxa arctostaphyli on white spruce in interior Alaska
2652005 western gall rust Endocronartium harknessii Sporulating aecial gall on shore pine in southeast Alaska
2651042 fusiform rust Cronartium quercuum f.sp. fusiforme aecia
2251010 stalactiform blister rust Cronartium coleosporioides stem canker
2250095 comandra blister rust Cronartium comandrae infested stand
2250094 white pine blister rust Cronartium ribicola infested stand
2169095 onion rust Puccinia allii
1172029 white pine blister rust Cronartium ribicola Blister rust sporulating
0805069 spruce broom rust Chrysomyxa arctostaphyli
0745016 fusiform rust Cronartium quercuum f.sp. fusiforme
0454030 poplar rust Melampsora medusae Yellowish uredia of Melampsora medusae on the underside of leaves of poplar.
0364007 poplar rust Melampsora medusae on cottonwood
0355053 eastern pine gall rust Cronartium quercuum aecia
0355061 fusiform rust Cronartium quercuum f.sp. fusiforme Aecia
0355062 white pine blister rust Cronartium ribicola canker growing from branch to main stem
0019030 chrysanthemum white rust Puccinia horiana white rust pustules on leaf, Intercepted in quarantine at SFO
1406257 cedar-apple rust Gymnosporangium juniperi-virginianae
1406001 pine needle rust Coleosporium asterum aecia
1406002 pine needle rust Coleosporium asterum aecia
4822076 pine needle rusts Coleosporium spp. Aeciospores which are wind dissminated from the pine needles to the alternate aster or goldenrod host
4822074 pine needle rusts Coleosporium spp. Yellow-orange fissures develop in late spring on infected needles.
4822075 pine needle rusts Coleosporium spp. Aecia on needles
4213002 spruce needle rusts Chrysomyxa spp. close-up view of infected needles with spore masses
1241503 fir broom rust Melampsorella caryophyllacearum Fir broom rust stimulates yellow-tinged witches brooms in fir branches.
1467269 western gall rust Endocronartium harknessii aecia
5435666 bramble leaf rust Phragmidium violaceum Teliospore. Host also known as (R. disclor, R. procerus).
4823052 eastern pine gall rust Cronartium quercuum Distinct spherical (globose) swelling. The bright yellow spore sacs (aecia) which contain masses of yellow to orange aeciospores form in the spring.
1467011 western gall rust Endocronartium harknessii aecial gall
1467005 limb rust Peridermium filamentosum aecia
1467023 needle rust Coleosporium senecionis telial horns
1442049 witches broom rust Gymnosporangium nelsonii Gymnosporangium nelsonii Fpm 17 Juniperus scopulorum Poudre Canyon, Co. June 11 1974
1400124 cedar-apple rust Gymnosporangium juniperi-virginianae telial horns from galls on cedar, southeast Minnesota in spring following moist weather.
3035091 fusiform rust Cronartium quercuum f.sp. fusiforme pycnia
3036014 fusiform rust Cronartium quercuum f.sp. fusiforme closeup of telia
2139076 white pine blister rust Cronartium ribicola
1377028 eastern pine gall rust Cronartium quercuum Several clustered galls
1396156 cedar-apple rust Gymnosporangium juniperi-virginianae
1467272 limb rust Peridermium filamentosum
1406133 sweet fern blister rust Cronartium comptoniae
1406003 pine needle rust Coleosporium asterum aecia
1406007 pine needle rust Coleosporium asterum
1467040 Gynosporanium rusts Gymnosporangium spp.
1467264 western gall rust Endocronartium harknessii killed bishop pine
5440185 soybean rust Phakopsora pachyrhizi Symptoms of soybean rust on upper and lower leaf surface.
5440186 soybean rust Phakopsora pachyrhizi Early symptoms of soybean rust on unsprayed control plot within a fungicide trial.
5440187 soybean rust Phakopsora pachyrhizi Range of soybean rust symptoms on soybean leaves.
5440188 soybean rust Phakopsora pachyrhizi Range of soybean rust symptoms on soybean leaves
5440189 soybean rust Phakopsora pachyrhizi Advanced symptoms of soybean rust on unsprayed control plot within a fungicide trial.
5435663 bramble leaf rust Phragmidium violaceum Aecia spores. Host also known as (R. disclor, R. procerus).
4215071 spruce broom rust Chrysomyxa arctostaphyli on spruce
5429987 cedar-apple rust Gymnosporangium juniperi-virginianae Aeciaspores of Gymnosporangia juniperi-virginianae
5429983 cedar-apple rust Gymnosporangium juniperi-virginianae A circle of aecia on bottom surface of infected apple leaf
5429984 cedar-apple rust Gymnosporangium juniperi-virginianae Aecia with aeciaspores on bottom surface of infected apple leaf
5429985 cedar-apple rust Gymnosporangium juniperi-virginianae Aeciaspores of Gymnosporangia juniperi-virginianae
5429986 cedar-apple rust Gymnosporangium juniperi-virginianae Aeciaspores of Gymnosporangia juniperi-virginianae
1199003 eastern pine gall rust Cronartium quercuum Globose galls in central Wisconsin
1265014 soybean rust Phakopsora pachyrhizi Tan lesion on a soybean leaf
5436302 rust Puccinia jaceae var. solstitialis early infection of rust fungus
5439130 Japanese apple rust Gymnosporangium yamadae telia
5439131 Japanese apple rust Gymnosporangium yamadae telia
5439132 Japanese apple rust Gymnosporangium yamadae telia
5439133 Japanese apple rust Gymnosporangium yamadae telia
5439134 Japanese apple rust Gymnosporangium yamadae telia
1467288 fir broom rust Melampsorella caryophyllacearum
1406005 pine needle rust Coleosporium asterum
1406006 pine needle rust Coleosporium asterum
0355058 fusiform rust Cronartium quercuum f.sp. fusiforme branch gall
1396157 cedar-apple rust Gymnosporangium juniperi-virginianae
1442264 white pine blister rust Cronartium ribicola Stem swelling. July 1974
4213030 white pine blister rust Cronartium ribicola flagged branch
1457022 white pine blister rust Cronartium ribicola Aecial spore stage of white pine blister rust on main stem of a young tree.
2250099 comandra blister rust Cronartium comandrae canker on lodgepole pine
1467423 white pine blister rust Cronartium ribicola red spot race; pseudosclerotium spot
5435913 rush skeletonweed rust Puccinia chondrillina rust spores on leaf
1467446 white pine blister rust Cronartium ribicola corking out
1400126 gall rust of jack pine Cronartium quercuum f.sp. banksianae Pycnial stage (honey-like droplets on the gall) of gall rust on jack pine in Wisconsin in spring.
1467289 fir broom rust Melampsorella caryophyllacearum close up of large broom
5432341 Japanese apple rust Gymnosporangium yamadae Aecia
5432342 Japanese apple rust Gymnosporangium yamadae Aecia
5432343 Japanese apple rust Gymnosporangium yamadae Aecia
5432339 Japanese apple rust Gymnosporangium yamadae Telial gall of Japanese apple rust
5432340 Japanese apple rust Gymnosporangium yamadae Telial gall of Japanese apple rust
1442040 comandra blister rust Cronartium comandrae showing aecia
1241729 stalactiform blister rust Cronartium coleosporioides
1199004 eastern pine gall rust Cronartium quercuum Globose galls typical of the pine-oak and pine-pine gall rusts on jack pine.
1301048 white pine blister rust Cronartium ribicola Aecial spore stage of white pine blister rust on main stem of a sapling.
3036001 fusiform rust Cronartium quercuum f.sp. fusiforme
1377009 cedar-apple rust Gymnosporangium juniperi-virginianae Telial stage
1436166 bean rust Uromyces phaseoli var. typica
2250100 western gall rust Endocronartium harknessii on ponderosa pine
4215070 fir broom rust Melampsorella caryophyllacearum broom
1470126 gall rust of jack pine Cronartium quercuum f.sp. banksianae
4823038 cedar-apple rust Gymnosporangium juniperi-virginianae Fresh telial horns produced on mature second-year galls during moist conditons in spring and early summer.
0022097 rush skeletonweed rust Puccinia chondrillina to the leaves
0022096 rush skeletonweed rust Puccinia chondrillina pusules develop on leaf
0023081 puccinia rust Puccinia carduorum
4213001 pine needle rusts Coleosporium spp. close-up view of aecia spore masses
1467266 western gall rust Endocronartium harknessii trunk gall
1467284 incense cedar broom rust Gymnosporangium libocedri
1388036 fir broom rust Melampsorella caryophyllacearum Cloquet Forestry Center, Univ. of MN
4213031 white pine blister rust Cronartium ribicola young canker
4213032 white pine blister rust Cronartium ribicola close-up view of canker margin
4213033 white pine blister rust Cronartium ribicola canker showing typical discoloration on young stem
4213042 sweet fern blister rust Cronartium comptoniae close-up view of resinosus
0355054 eastern pine gall rust Cronartium quercuum Aecial stage
1467275 limb rust Peridermium filamentosum aecial stage; note "tounge-like" pustules
3036009 fusiform rust Cronartium quercuum f.sp. fusiforme multiple branch galls
2733059 fusiform rust Cronartium quercuum f.sp. fusiforme trunk canker
3036016 fusiform rust Cronartium quercuum f.sp. fusiforme basal canker
3035090 fusiform rust Cronartium quercuum f.sp. fusiforme
3035092 fusiform rust Cronartium quercuum f.sp. fusiforme older infection
1467282 stalactiform blister rust Cronartium coleosporioides aecia on canker
1467309 pinyon blister rust Cronartium occidentale
1467265 western gall rust Endocronartium harknessii typical galls on young ponderosa pine
1467286 incense cedar broom rust Gymnosporangium libocedri telial stage
1467285 incense cedar broom rust Gymnosporangium libocedri
5436301 rust Puccinia jaceae var. solstitialis inoculation of plants with rust fungus.
2652003 large-spored spruce-laborador tea/needle rust Chrysomyxa ledicola in coastal Alaska
5436303 rust Puccinia jaceae var. solstitialis early infection of rust fungus
5436300 rust Puccinia jaceae var. solstitialis tent used to maintain humidity after pathogen inoculation
4213044 sweet fern blister rust Cronartium comptoniae canker on stem
1457021 white pine blister rust Cronartium ribicola Main stem canker girdling the main stem of a young tree.
3036019 fusiform rust Cronartium quercuum f.sp. fusiforme multiple branch cankers
1442267 comandra blister rust Cronartium comandrae
4213045 sweet fern blister rust Cronartium comptoniae cross-section of canker
2652001 large-spored spruce-laborador tea/needle rust Chrysomyxa ledicola in coastal Alaska
5299099 American hawthorn rust Gymnosporangium globosum Lesions on leaf upper surface
5061062 white pine blister rust Cronartium ribicola Early upper-leaf symptoms of Cronartium ribicola on Ribes.
1442045 western gall rust Endocronartium harknessii Frazer Experiment Forest
1457020 white pine blister rust Cronartium ribicola Fading eastern white pine with a main stem rust canker at the tree base.
1234145 cedar-apple rust Gymnosporangium juniperi-virginianae
4213035 white pine blister rust Cronartium ribicola canker with aecia and pitch
1406008 pine needle rust Coleosporium asterum telia growing on alternate host
0454031 poplar rust Melampsora medusae Spermogonie of Melampsora medusae on Larix decidua, following inoculation of needles in the glasshouse with basidiospores.
1301049 white pine blister rust Cronartium ribicola Dead top in eastern white pine caused by white pine blister rust.
5435667 bramble leaf rust Phragmidium violaceum dying blackberry from rust infection, SW OR coast.
5435910 rush skeletonweed rust Puccinia chondrillina rust spores
1467003 comandra blister rust Cronartium comandrae canker; July 2, 1965
0355060 fusiform rust Cronartium quercuum f.sp. fusiforme close-up view of telia on oak leaves, the alternate host.
0805070 spruce broom rust Chrysomyxa arctostaphyli
1436078 cedar-apple rust Gymnosporangium juniperi-virginianae gall
2251063 Melampsora rusts Melampsora spp.
1436091 orange rust Arthuriomyces peckianus
5435668 bramble leaf rust Phragmidium violaceum infection from upper side of leaf
5435669 bramble leaf rust Phragmidium violaceum rust pustules from underside of leaf.
5435661 bramble leaf rust Phragmidium violaceum rust pustules
5435662 bramble leaf rust Phragmidium violaceum telia spores
5435665 bramble leaf rust Phragmidium violaceum Look for the purplish spots, turn leaf over to find rust pustules.
5435911 rush skeletonweed rust Puccinia chondrillina rust spores on leaf
5435912 rush skeletonweed rust Puccinia chondrillina rust spores on leaf
5435907 rush skeletonweed rust Puccinia chondrillina rust pathogen on stem
5435908 rush skeletonweed rust Puccinia chondrillina rust pathogen on stem, note lateral stems have died
5435909 rush skeletonweed rust Puccinia chondrillina rust spores
4214092 cedar-apple rust Gymnosporangium juniperi-virginianae galls with mature telial horns
1442044 western gall rust Endocronartium harknessii Frazer Experiment Forest
1406134 spruce broom rust Chrysomyxa arctostaphyli Fraser Experimental Forest
1406012 spruce needle rusts Chrysomyxa spp.
4213041 sweet fern blister rust Cronartium comptoniae canker
1442048 limb rust Peridermium filamentosum Roos National Forest Colorado, July 1974
4823053 eastern pine gall rust Cronartium quercuum Spherical gall with yellow aecia spore sacs.
2139071 pinyon blister rust Cronartium occidentale
4213034 white pine blister rust Cronartium ribicola canker chewed by animals
1406011 spruce needle rusts Chrysomyxa spp.
0355050 pine needle rusts Coleosporium spp. close-up view on aecia
2169097 onion rust Puccinia allii
1406267 white pine blister rust Cronartium ribicola
2652014 spruce needle rust Chrysomyxa weirii small infections in southeast Alaska
1406266 white pine blister rust Cronartium ribicola
1406004 pine needle rust Coleosporium asterum small trees
1406013 pine needle rust Coleosporium asterum
4213037 white pine blister rust Cronartium ribicola tree with canker and flagged branch
4215019 limb rust Peridermium filamentosum killed branches in ponderosa pine
2250090 white pine blister rust Cronartium ribicola infested stand
5432344 Japanese apple rust Gymnosporangium yamadae Aecia on lower leaf surface
5432345 Japanese apple rust Gymnosporangium yamadae Aecia on lower leaf surface
5430486 American hawthorn rust Gymnosporangium globosum Yellow spotting on the upper side of hawthorn leaves infected by the cedar-hawthorn rust fungus, Gymnosporangium globosum.
5430498 quince rust Gymnosporangium clavipes Telial stage of cedar-quince rust on eastern redcedar.
1398219 eastern pine gall rust Cronartium quercuum Globose gall typical of the pine-oak and pine-pine gall rusts on jack pine. Black River State Forest, Jackson Co., WI.
3036007 fusiform rust Cronartium quercuum f.sp. fusiforme gall
1467248 white pine blister rust Cronartium ribicola flagging
1234141 cedar-apple rust Gymnosporangium juniperi-virginianae
1467296 comandra blister rust Cronartium comandrae constriction canker
1467247 white pine blister rust Cronartium ribicola
4215021 limb rust Peridermium filamentosum killed branches in ponderosa pine
1436134 fusiform rust Cronartium quercuum f.sp. fusiforme
1236063 fusiform rust Cronartium quercuum f.sp. fusiforme
1436144 pine needle rusts Coleosporium spp.
5302004 white pine blister rust Cronartium ribicola Inoculating white pine with Cronartium ribicola in the lab
5302005 white pine blister rust Cronartium ribicola Inoculating white pine with Cronartium ribicola in the lab
5302009 white pine blister rust Cronartium ribicola Symptomatic white pine seedlings being screened for blister rust resistance
5302008 white pine blister rust Cronartium ribicola Greenhouse trials for white pine blister rust screening
5061050 white pine blister rust Cronartium ribicola A "pruned" white pine, probably used as a demonstration for techniques on how to prune for control of white pine blister rust.
5061087 white pine blister rust Cronartium ribicola White pine top kill
5061089 white pine blister rust Cronartium ribicola Small "flagged branches"
5061090 white pine blister rust Cronartium ribicola An infected branch flag in a large white pine
5061091 white pine blister rust Cronartium ribicola Small branch infection
5061092 white pine blister rust Cronartium ribicola Small branch infection
5061093 white pine blister rust Cronartium ribicola Several small branch infections on a single tree
5061094 white pine blister rust Cronartium ribicola Small branch infection
5037064 spruce broom rust Chrysomyxa arctostaphyli Large witches' broom in white spruce.
1467298 comandra blister rust Cronartium comandrae
5418745 stripe rust Puccinia striiformis Stripe rust inside a glume
5061060 white pine blister rust Cronartium ribicola Early symptoms of white pine blister rust on the main bole of a sapling.
1241732 limb rust Peridermium filamentosum Limb rust aecia sporulating on a Jeffrey pine limb.
1265015 soybean rust Phakopsora pachyrhizi tan lesions with reddish brown lesions in the center
1467297 comandra blister rust Cronartium comandrae
5430720 chrysanthemum white rust Puccinia horiana
5395251 fir broom rust Melampsorella caryophyllacearum
1377027 eastern pine gall rust Cronartium quercuum A sporulating gall (the orange-yellow pustules are aecia)nearly girdling a jack pine branch.
1236062 fusiform rust Cronartium quercuum f.sp. fusiforme
1467290 fir broom rust Melampsorella caryophyllacearum small broom
0355055 fusiform rust Cronartium quercuum f.sp. fusiforme gall forming on branch
1236061 fusiform rust Cronartium quercuum f.sp. fusiforme
2634081 white pine blister rust Cronartium ribicola close-up view of canker margin
1571167 rust Puccinia cynodontis Tiny red pustules on leaves are bermudagrass rust (Puccinia cynodontis). April 1995.
1571168 rust Puccinia cynodontis Tiny red pustules on leaves are bermudagrass rust (Puccinia cynodontis). April 1995.
1571282 rust Puccinia cynodontis Red pustules are the signs of bermudagrass rust, caused by Puccinia cynodontis. May 1995
1571283 rust Puccinia cynodontis Red pustules are the signs of bermudagrass rust, caused by Puccinia cynodontis. May 1995
1571284 rust Puccinia cynodontis Red pustules are the signs of bermudagrass rust, caused by Puccinia cynodontis. May 1995
1571289 rust Puccinia cynodontis Red pustules are the signs of bermudagrass rust, caused by Puccinia cynodontis. May 1995
1571290 rust Puccinia cynodontis Red pustules are the signs of bermudagrass rust, caused by Puccinia cynodontis. May 1995
1571288 rust Puccinia cynodontis Red pustules are the signs of bermudagrass rust, caused by Puccinia cynodontis. May 1995
1571285 rust Puccinia cynodontis Red pustules are the signs of bermudagrass rust, caused by Puccinia cynodontis. May 1995
1571286 rust Puccinia cynodontis Red pustules are the signs of bermudagrass rust, caused by Puccinia cynodontis. May 1995
1571287 rust Puccinia cynodontis Red pustules are the signs of bermudagrass rust, caused by Puccinia cynodontis. May 1995
1571291 rust Puccinia cynodontis Red pustules are the signs of bermudagrass rust, caused by Puccinia cynodontis. May 1995
1442038 comandra blister rust Cronartium comandrae note absence of swelling
1467254 white pine blister rust Cronartium ribicola
1241730 stalactiform blister rust Cronartium coleosporioides Older stalactiform blister rust stem canker.
1467008 comandra blister rust Cronartium comandrae July 2, 1965
1467118 fir broom rust Melampsorella caryophyllacearum
4215020 limb rust Peridermium filamentosum killed branches in ponderosa pine
4213040 white pine blister rust Cronartium ribicola tree with dead top
1467255 white pine blister rust Cronartium ribicola rust needle spots
1436077 cedar-apple rust Gymnosporangium juniperi-virginianae on leaf
5411408 rust Coleosporium helianthi orange uredinia spores on lower leaf surface
5411411 rust Cerotelium fici leaf spots on upper leaf surface
5411412 rust Cerotelium fici leaf spots on lower leaf surface
5411413 rust Cerotelium fici
5411414 rust Cerotelium fici
5411415 rust Cerotelium fici rust pustules on underside of leaf
5411406 rust Coleosporium helianthi rust and powdery mildew on foliage
5411407 rust Coleosporium helianthi orange urediniospores on lower leaf surface
5411368 quince rust Gymnosporangium clavipes aecia with orange aeciaspores on fruit
5411369 quince rust Gymnosporangium clavipes aecia with orange aeciaspores on fruit
5411370 quince rust Gymnosporangium clavipes diseased fruit on hawthorn
5411367 quince rust Gymnosporangium clavipes diseased fruit
5411349 rust Puccinia malvacearum rust on leaves
5411350 rust Puccinia malvacearum rust pustules on upper surface of leaf
5411351 rust Puccinia malvacearum rust pustules on upper surface of leaf
5411352 rust Puccinia malvacearum rust pustules on lower leaf surface
1467280 stalactiform blister rust Cronartium coleosporioides
1442043 white pine blister rust Cronartium ribicola flagging
1224003 cedar-apple rust Gymnosporangium juniperi-virginianae
1224004 cedar-apple rust Gymnosporangium juniperi-virginianae
1467281 stalactiform blister rust Cronartium coleosporioides
1467270 western gall rust Endocronartium harknessii atypical elongated galls
1457018 white pine blister rust Cronartium ribicola Branch flag (infected branch that has died) high in the crown of a large eastern white pine. Rust infections in the upper crowns of trees generally indicate a high local risk for infection.
1241717 white pine blister rust Cronartium ribicola Wetting branch cankers can make it easier to see the discoloration from a canker.
1399111 Melampsora leaf rust Melampsora laricis-populina Uredospores on lower leaf surface
1467279 stalactiform blister rust Cronartium coleosporioides
1467278 stalactiform blister rust Cronartium coleosporioides
1467016 limb rust Peridermium filamentosum
1241714 white pine blister rust Cronartium ribicola Rust causes orange or yellow discoloration of thin bark of young trees.
1241727 comandra blister rust Cronartium comandrae Comandra blister rust sporulating on a young lodgepole stem.
0355051 southern cone rust Cronartium strobilinum Aecia on swollen, infected cone
1241724 western gall rust Endocronartium harknessii Branch flagging in crown caused by western gall rust.
0485008 cedar-apple rust Gymnosporangium juniperi-virginianae gall
1241713 white pine blister rust Cronartium ribicola Stem cankers eventually girdle and kill trees.
1467300 comandra blister rust Cronartium comandrae
1467014 limb rust Peridermium filamentosum
1224005 cedar-apple rust Gymnosporangium juniperi-virginianae
4213043 sweet fern blister rust Cronartium comptoniae aecia on canker
1467276 limb rust Peridermium filamentosum
1247222 fusiform rust Cronartium quercuum f.sp. fusiforme Old canker
0886027 gall rust of Virginia pine Cronartium quercuum f.sp. virginianae Gall on Virginia pine
3035086 fusiform rust Cronartium quercuum f.sp. fusiforme pycnia
2251004 western gall rust Endocronartium harknessii hip canker
1467277 stalactiform blister rust Cronartium coleosporioides
1467415 white pine blister rust Cronartium ribicola urediospores on Ribes spp.
2652002 large-spored spruce-laborador tea/needle rust Chrysomyxa ledicola on the alternate host, Labrador tea, in coastal Alaska
1241718 white pine blister rust Cronartium ribicola Branch flagging occurs after the canker has girdled the branch.
4822064 ash rusts Puccinia sparganioides distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue.
1406131 sweet fern blister rust Cronartium comptoniae
2634056 cedar-apple rust Gymnosporangium juniperi-virginianae pycnial spots on apple leaves
5407853 orange rust Gymnoconia nitens Blackberry shoots infected with orange rust (right) compared to healthy shoots (left).
5410710 wheat stem rust Puccinia graminis
5410711 wheat stem rust Puccinia graminis
5410709 wheat stem rust Puccinia graminis
5410708 wheat stem rust Puccinia graminis
5410686 rust Puccinia hordei
5410687 rust Puccinia hordei urediospores
0355067 fusiform rust Cronartium quercuum f.sp. fusiforme infected seedlings
5407875 yellow rust Phragmidium rubi-idaei Pustules of yellow rust (Phragmidium rubi-idaei) on the upperside of raspberry leaves
1241504 fir broom rust Melampsorella caryophyllacearum Spores are produced on needles within the broom in early summer.
0355052 white pine blister rust Cronartium ribicola Uredia stage on alternate host Ribes
5407836 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar gall with emerging telial horns
1467273 limb rust Peridermium filamentosum
1467253 white pine blister rust Cronartium ribicola canker with route of entry (needle) shown
1467445 white pine blister rust Cronartium ribicola hypersensative response to infection
5411266 onion rust Puccinia allii
5411265 onion rust Puccinia allii
5040085 white pine blister rust Cronartium ribicola Rust lesions (uredinia) on Ribes
5059003 spruce needle rusts Chrysomyxa spp. Aecial fruiting bodies
5036062 spruce broom rust Chrysomyxa arctostaphyli Large broom on white spruce
5059004 stalactiform blister rust Cronartium coleosporioides Long canker
2141067 comandra blister rust Cronartium comandrae on a seedling
5369819 rust Puccinia malvacearum Symptoms on the upperside of leaf.  Photograph taken September 24, 2007
5369756 rust Puccinia malvacearum Pustules on the underside of leaf. Photograph taken November 3, 2007
5369757 rust Puccinia malvacearum Pustules on the underside of leaf. Photograph taken November 3, 2007
5411264 onion rust Puccinia allii
5411267 onion rust Puccinia allii
5418731 wheat stem rust Puccinia graminis Stem rust on winter wheat, variety Yellowstone, inoculated trials
5418727 wheat stem rust Puccinia graminis Stem rust on winter wheat, variety Yellowstone, inoculated trials
5418726 wheat stem rust Puccinia graminis Stem rust on winter wheat, variety Yellowstone, inoculated trials
5418725 wheat stem rust Puccinia graminis Stem rust on winter wheat, variety Yellowstone, inoculated trials
5056094 white pine blister rust Cronartium ribicola White pine blister rust inoculation trials at U.S. Forest Service Oconto River Seed Orchard. Ribes plants used for cultivating Cronartium spores.
5423120 eastern pine gall rust Cronartium quercuum Orange tissue showing through bark of sand pine
5054082 western gall rust Endocronartium harknessii Individual gall
5054083 western gall rust Endocronartium harknessii Gall of Peridermium harknessii
5054084 western gall rust Endocronartium harknessii Stem-girdling gall
5054085 western gall rust Endocronartium harknessii Jack pine gall rust individual gall
5054087 western gall rust Endocronartium harknessii Old gall of jack pine gall rust
5039002 western gall rust Endocronartium harknessii Jack pine gall rust, individual gall
5054089 western gall rust Endocronartium harknessii Jack pine gall rust, multiple galls
5056088 white pine blister rust Cronartium ribicola White pine blister rust inoculation trials at U.S. Forest Service Oconto River Seed Orchard
5056089 white pine blister rust Cronartium ribicola White pine blister rust inoculation trials at U.S. Forest Service Oconto River Seed Orchard
5056090 white pine blister rust Cronartium ribicola White pine blister rust inoculation trials at U.S. Forest Service Oconto River Seed Orchard
5408102 fir broom rust Melampsorella caryophyllacearum
5410688 rust Puccinia hordei
5410685 rust Puccinia hordei
5410684 rust Puccinia hordei
5410689 rust Puccinia hordei Teliospore stage symptoms of wheat rust on wheat leaves.
1538028 common corn rust Puccinia sorghi
1538029 common corn rust Puccinia sorghi
1538032 common corn rust Puccinia sorghi
1534013 common corn rust Puccinia sorghi
5384613 chrysanthemum white rust Puccinia horiana
5384612 chrysanthemum white rust Puccinia horiana
5202019 soybean rust Phakopsora pachyrhizi pustules on lower leaf surface
5202022 soybean rust Phakopsora pachyrhizi
5202020 soybean rust Phakopsora pachyrhizi pustules on lower leaf surface
5202021 soybean rust Phakopsora pachyrhizi
5202010 soybean rust Phakopsora pachyrhizi
5202011 soybean rust Phakopsora pachyrhizi
5202012 soybean rust Phakopsora pachyrhizi
5202013 soybean rust Phakopsora pachyrhizi pustules on the lower leaf suface
5202014 soybean rust Phakopsora pachyrhizi pustules on lower leaf surface
5202017 soybean rust Phakopsora pachyrhizi pustules on lower leaf surface
5202018 soybean rust Phakopsora pachyrhizi
5202015 soybean rust Phakopsora pachyrhizi symptoms on the upper leaf surface
5202016 soybean rust Phakopsora pachyrhizi pustules on lower leaf surface
5393378 rust Coleosporium plumeriae
5042098 white pine blister rust Cronartium ribicola Aecial sacs of Cronartium ribicola on eastern white pine.
5394466 stripe rust Puccinia striiformis Stripe rust on variety Big Sky
5394467 stripe rust Puccinia striiformis Stripe rust on variety Big Sky
5394468 stripe rust Puccinia striiformis stripe rust on variety big sky, susceptible
5394469 stripe rust Puccinia striiformis stripe rust on variety Yellowstone, resistant
5394486 stripe rust Puccinia striiformis Stripe rust on variety Big Sky
5394487 stripe rust Puccinia striiformis Stripe rust on variety Big Sky
5394488 stripe rust Puccinia striiformis Stripe rust on variety Big Sky
5394489 stripe rust Puccinia striiformis Stripe rust on variety Big Sky
5394498 stripe rust Puccinia striiformis Stripe rust on variety Big Sky
5394499 stripe rust Puccinia striiformis Stripe rust on variety Big Sky
5394500 stripe rust Puccinia striiformis Stripe rust on variety Big Sky
5394501 stripe rust Puccinia striiformis Stripe rust on variety Big Sky
5394502 stripe rust Puccinia striiformis Stripe rust on variety Big Sky
5394503 stripe rust Puccinia striiformis Stripe rust on variety Yellowstone, resistant
5394504 stripe rust Puccinia striiformis Stripe rust on variety Yellowstone, resistant
5394505 stripe rust Puccinia striiformis Stripe rust on variety Yellowstone, resistant
5394506 stripe rust Puccinia striiformis Stripe rust on variety Yellowstone, resistant
5394494 wheat stem rust Puccinia graminis
5394495 wheat stem rust Puccinia graminis
5394496 wheat stem rust Puccinia graminis
5394497 wheat stem rust Puccinia graminis
2179044 rust on veronica Puccinia veronicae-longifoliae
2177080 rust on veronica Puccinia veronicae-longifoliae
2177082 rust on veronica Puccinia veronicae-longifoliae
2177073 wheat stem rust Puccinia graminis
2177074 wheat stem rust Puccinia graminis
2177069 wheat stem rust Puccinia graminis
2177070 wheat stem rust Puccinia graminis
2177071 wheat stem rust Puccinia graminis
2177072 wheat stem rust Puccinia graminis
2177067 wheat stem rust Puccinia graminis
2177068 wheat stem rust Puccinia graminis
2177063 wheat stem rust Puccinia graminis
2177064 wheat stem rust Puccinia graminis
2177065 wheat stem rust Puccinia graminis
2177066 wheat stem rust Puccinia graminis
2177060 Cronartium gall rusts Cronartium spp. uredium with telial columns
2177004 rose rusts Phragmidium spp.
2177005 rose rusts Phragmidium spp.
2177006 rose rusts Phragmidium spp.
2175041 wheat stem rust Puccinia graminis
2175042 wheat stem rust Puccinia graminis
2175043 wheat stem rust Puccinia graminis
2175037 western gall rust Endocronartium harknessii
2175038 western gall rust Endocronartium harknessii
2175039 western gall rust Endocronartium harknessii immature gall
2175040 western gall rust Endocronartium harknessii
2175020 dry bean rust Uromyces appendiculatus
2175018 dry bean rust Uromyces appendiculatus
2175019 dry bean rust Uromyces appendiculatus
2175017 dry bean rust Uromyces appendiculatus
2174049 mint rust Puccinia menthae
2174038 mint rust Puccinia menthae
2174039 mint rust Puccinia menthae
2174040 mint rust Puccinia menthae
2174041 mint rust Puccinia menthae
2174035 mint rust Puccinia menthae spore mass
2174037 mint rust Puccinia menthae spores
2174034 mint rust Puccinia menthae spore masses
2173077 rust Puccinia heliconiae
2173058 gladiolus rust Uromyces transversalis
2173059 gladiolus rust Uromyces transversalis
2173061 gladiolus rust Uromyces transversalis
2173056 gladiolus rust Uromyces transversalis
2173057 gladiolus rust Uromyces transversalis
2172052 lemongrass rust Puccinia nakanishikii
2172053 lemongrass rust Puccinia nakanishikii
2172054 lemongrass rust Puccinia nakanishikii uredospores
2172058 lemongrass rust Puccinia nakanishikii
2172055 lemongrass rust Puccinia cymbopogonis
2172057 lemongrass rust Puccinia cymbopogonis
2172062 lemongrass rust Puccinia cymbopogonis
2172048 lemongrass rust Puccinia nakanishikii
2172049 lemongrass rust Puccinia nakanishikii uredospores
2172050 lemongrass rust Puccinia nakanishikii
2172051 lemongrass rust Puccinia nakanishikii
2172044 lemongrass rust Puccinia nakanishikii blisters exposing spores
2172046 lemongrass rust Puccinia nakanishikii uredospores
2172047 lemongrass rust Puccinia nakanishikii
2172040 lemongrass rust Puccinia nakanishikii uredospores
2172041 lemongrass rust Puccinia nakanishikii paraphyses
2172042 lemongrass rust Puccinia nakanishikii
2172043 lemongrass rust Puccinia nakanishikii blisters exposing spores
2172038 lemongrass rust Puccinia nakanishikii
2172039 lemongrass rust Puccinia nakanishikii uredospores
2172024 coffee leaf rust Hemileia vastatrix
2172025 coffee leaf rust Hemileia vastatrix
2172023 coffee leaf rust Hemileia vastatrix
2171030 bamboo rust Puccinia phyllostachydis
2171031 bamboo rust Puccinia phyllostachydis
2171032 bamboo rust Puccinia phyllostachydis
2171033 bamboo rust Puccinia phyllostachydis
2171037 rusts Gerwasia spp.
2171028 bamboo rust Puccinia phyllostachydis
2171029 bamboo rust Puccinia phyllostachydis
2171014 bamboo rust Puccinia phyllostachydis
2171015 bamboo rust Puccinia phyllostachydis
2171016 bamboo rust Puccinia phyllostachydis
2171017 bamboo rust Puccinia phyllostachydis
2171018 bamboo rust Puccinia phyllostachydis
2171004 puccinia rusts Puccinia spp.
2171005 puccinia rusts Puccinia spp.
2171006 puccinia rusts Puccinia spp.
2171007 puccinia rusts Puccinia spp.
2170091 brown rust Puccinia tanaceti
2170090 brown rust Puccinia tanaceti
2170084 brown rust Puccinia tanaceti
2170085 brown rust Puccinia tanaceti
2170086 brown rust Puccinia tanaceti
2170088 brown rust Puccinia tanaceti
2170080 brown rust Puccinia tanaceti
2170081 brown rust Puccinia tanaceti
2170083 brown rust Puccinia tanaceti
2170078 brown rust Puccinia tanaceti
2170079 brown rust Puccinia tanaceti
2170082 brown rust Puccinia tanaceti
2170077 brown rust Puccinia tanaceti
2170042 onion rust Puccinia allii spores
5048054 white pine blister rust Cronartium ribicola Overzealous pruning for white pine blister rust control.  Person in image: Mike Ostry
5043010 rust Chrysomyxa ledi var. rhododendri Spruce needle rust, heavy infection.
5389688 rust Puccinia salviicola
5389689 rust Puccinia salviicola
5389690 rust Puccinia salviicola
5389691 rust Puccinia salviicola
5392892 cedar-apple rust Gymnosporangium juniperi-virginianae
5392891 cedar-apple rust Gymnosporangium juniperi-virginianae
5392889 cedar-apple rust Gymnosporangium juniperi-virginianae
5392890 cedar-apple rust Gymnosporangium juniperi-virginianae
5392887 cedar-apple rust Gymnosporangium juniperi-virginianae
5392888 cedar-apple rust Gymnosporangium juniperi-virginianae
5387792 incense cedar broom rust Gymnosporangium libocedri telial cushions on foliage; 06/05/2008
5357464 oat crown rust Puccinia coronata var. avenae Field plots used in research into the pathology of crown rust of oat -- fields of oats and buckthorn plants, the alternate host of the rust.
5382384 spruce broom rust Chrysomyxa arctostaphyli Spores on infected foliage
5359599 puccinia rusts Puccinia spp. Aecia of rust (Puccinia sp.) on a thistle leaf.
5034057 western gall rust Endocronartium harknessii Large gall caused by Peridermium harknessii on jack pine.
5034070 spruce broom rust Chrysomyxa arctostaphyli Spruce broom rust on white spruce, adjacent to a tree with a severe lightning injury
5389793 rust Puccinia hordei Rust pustules
5359589 wheat stem rust Puccinia graminis Original name on slide was Puccinia graminis f.sp.tritici
5032061 white pine blister rust Cronartium ribicola A white pine blister rust canker on a young white pine.
5032066 white pine blister rust Cronartium ribicola Top kill in white pine caused by white pine blister rust.
5034007 eastern pine gall rust Cronartium quercuum Jack pine gall rust galls.
1525579 rust Puccinia antirrhini
1525577 rust Puccinia antirrhini
1525578 rust Puccinia antirrhini
1525580 rust Puccinia antirrhini Rust on Snapdragon
1525582 rust Puccinia antirrhini
1525583 rust Puccinia antirrhini
1525584 rust Puccinia antirrhini
1525585 rust Puccinia antirrhini
5335017 pine needle rusts Coleosporium spp.
5335020 eastern pine gall rust Cronartium quercuum
5335055 quince rust Gymnosporangium clavipes
5335056 quince rust Gymnosporangium clavipes
5335057 quince rust Gymnosporangium clavipes
5335058 quince rust Gymnosporangium clavipes
5336076 rust Puccinia malvacearum
5337046 quince rust Gymnosporangium clavipes
5337042 quince rust Gymnosporangium clavipes
5337043 quince rust Gymnosporangium clavipes aeciospores collecting on sidewalk beneath infected tree
5337044 quince rust Gymnosporangium clavipes
5337045 quince rust Gymnosporangium clavipes aecial formation on fruit
5337096 cedar-apple rust Gymnosporangium juniperi-virginianae close-up of aecia on lower leaf surface
1525241 fir-fireweed rust Pucciniastrum epilobii rust on fuchsia
1525243 fir-fireweed rust Pucciniastrum epilobii rust on Fuchsia
1525247 fir-fireweed rust Pucciniastrum epilobii
1525249 fir-fireweed rust Pucciniastrum epilobii
1525242 fir-fireweed rust Pucciniastrum epilobii Rust on Fuchsia
1525244 fir-fireweed rust Pucciniastrum epilobii Rust on Fuchsia
1525245 fir-fireweed rust Pucciniastrum epilobii
1525246 fir-fireweed rust Pucciniastrum epilobii
1525248 fir-fireweed rust Pucciniastrum epilobii
1525250 fir-fireweed rust Pucciniastrum epilobii
1525251 fir-fireweed rust Pucciniastrum epilobii
1525252 fir-fireweed rust Pucciniastrum epilobii
1501104 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust infected seedlings; Greenhouse
5382383 spruce broom rust Chrysomyxa arctostaphyli Spores on infected foliage
5382385 spruce broom rust Chrysomyxa arctostaphyli Witches broom on spruce
5382386 spruce broom rust Chrysomyxa arctostaphyli Witches broom on spruce
5383132 cane and leaf rust Kuehneola uredinis Orange spore mass on cane
5383133 cane and leaf rust Kuehneola uredinis Urediniospores
5383145 rust Puccinia emaculata Rust pustules on blade
5383146 rust Puccinia emaculata Rust pustules and orange spores on blade
5383147 rust Puccinia emaculata Urediniospores and teliospores (asexual spore/sexual spore)
5383148 rust Puccinia emaculata Teliospores
5368431 pine needle rusts Coleosporium spp. Infected plant in the landscape. Many older leaves have burned brown and brittle.
5368432 pine needle rusts Coleosporium spp. Infected plant in the landscape. Many older leaves have burned brown and brittle.
5368527 stripe rust Puccinia striiformis f. tritici Pustules usually arranged in streaks or stripes but when severe can cover the entire leaf.
5368528 stripe rust Puccinia striiformis f. tritici Pustules usually arranged in streaks or stripes but when severe can cover the entire leaf.
5368529 stripe rust Puccinia striiformis f. tritici urediniospores of Puccinia striiformis f. sp. tritici
5368530 stripe rust Puccinia striiformis f. tritici urediniospores of Puccinia striiformis f. sp. tritici
1400122 southwestern white-spored gall rust Peridermium (An undescribed species) White-spored gall rust in the Toiyabe National Forest, Nevada. Previously thought to be a white-spored variation of Western gall rust, this fungus is probably actually a distinct species.
1400121 southwestern white-spored gall rust Peridermium (An undescribed species) White-spored gall rust on Ponderosa pine, Toiyabe National Forest, Nevada. Although previously thought to be a white-spored variation of western gall rust, this rust is probably a distinctly separate species. This photo was taken on a field trip in 1998. At that time the researchers who selected the site clearly explained that white-spored gall rust was distinctly different from typical orange-spored western gall rust, and that this was a site with the white-spored type. A species description and valid scientific name is still pending. Mycologia, 90(2), 1998, pp244-257. http://www.jstor.org/stable/3761300
1265017 soybean rust Phakopsora pachyrhizi Spots with chlorosis characteristic of more advanced infection.
5033012 fir broom rust Melampsorella caryophyllacearum Balsam fir broom rust broom
5368395 Southern corn rust Puccinia polysora Blisters on the upper leaf surface
5368396 Southern corn rust Puccinia polysora Older area of infection
5368397 Southern corn rust Puccinia polysora urediniospores of Puccinia polysora
5368398 Southern corn rust Puccinia polysora teliospores of Puccinia polysora
5368453 daylily rust Puccinia hemerocallidis Leaves start to yellow in sections and then the whole leaf becomes yellow.
5368454 daylily rust Puccinia hemerocallidis Leaves start to yellow in sections and then the whole leaf becomes yellow.
5368433 pine needle rusts Coleosporium spp. Underside of infected leaf with rust pustules.
5368434 pine needle rusts Coleosporium spp. Rust pustules with urediniospores on lower leaf surface.
5368435 pine needle rusts Coleosporium spp. Rust pustules with urediniospores seen in dark-field observation.
5368436 pine needle rusts Coleosporium spp. Close-up of urediniospores showing echinulate outer surface.
5368455 daylily rust Puccinia hemerocallidis Leaves start to yellow in sections and then the whole leaf becomes yellow.
5368456 daylily rust Puccinia hemerocallidis Pustules with urediniospores of the fungus can be seen.
5368490 rust Tranzschelia spp. Close-up of one pustule with urediniospores.
5368491 rust Tranzschelia spp. Close-up of one pustule with urediniospores under dark-field observation.
5368492 rust Tranzschelia spp. Close-up of urediniospores showing echinulate surface under dark-field observation.
5368493 rust Tranzschelia spp. Urediniospores of a species of the fungus Tranzschelia.
5368501 rust Tranzschelia spp. Minute, raised spots surrounded by light green/white leaf tissue. Larger spots at the perimiter of image are infections of the fungus Phloeosporella padi.
5368593 cedar-apple rust Gymnosporangium juniperi-virginianae The size of the spots is in relation to how many spots are on the leaf.
5368594 cedar-apple rust Gymnosporangium juniperi-virginianae The size of the spots is in relation to how many spots are on the leaf.
5368595 cedar-apple rust Gymnosporangium juniperi-virginianae The size of the spots is in relation to how many spots are on the leaf.
5368596 cedar-apple rust Gymnosporangium juniperi-virginianae Spore-producing bodies called "pycnia" on the upper surface on infected spots.
5368929 cedar-apple rust Gymnosporangium juniperi-virginianae The spots on the top surface of the leaves are due to spores coming from cedar trees - the fungal stage at the bottom surface of the leaf opposite the same spot is the stage which produces spores which infect cedar trees.
5368930 cedar-apple rust Gymnosporangium juniperi-virginianae The spots on the top surface of the leaves are due to spores coming from cedar trees - the fungal stage at the bottom surface of the leaf opposite the same spot is the stage which produces spores which infect cedar trees.
5368931 cedar-apple rust Gymnosporangium juniperi-virginianae Small, dark spore-producing bodies called "pycnia" on the upper surface of infected spots.
5368932 cedar-apple rust Gymnosporangium juniperi-virginianae Spore-producing bodies called "aecia" on the lower surface of infected spots.
5369087 soybean rust Phakopsora pachyrhizi urediniospores of Phakopsora pachyrhizi on leaf
5369088 soybean rust Phakopsora pachyrhizi urediniospores of Phakopsora pachyrhizi
5369089 soybean rust Phakopsora pachyrhizi urediniospores of Phakopsora pachyrhizi
5369090 soybean rust Phakopsora pachyrhizi Pustules of Phakopsora pachyrhizi on leaf looking like little volcanoes.
5369091 soybean rust Phakopsora pachyrhizi urediniospores of Phakopsora pachyrhizi on leaf
5369092 soybean rust Phakopsora pachyrhizi urediniospores of Phakopsora pachyrhizi on leaf
5369093 soybean rust Phakopsora pachyrhizi urediniospores of Phakopsora pachyrhizi on leaf
5369094 soybean rust Phakopsora pachyrhizi urediniospores of Phakopsora pachyrhizi on leaf
5369095 soybean rust Phakopsora pachyrhizi Dark-field observation of pustules and urediniospores of Phakopsora pachyrhizi
5369096 soybean rust Phakopsora pachyrhizi Dark-field observation of a single pustule and urediniospores of Phakopsora pachyrhizi
5369097 soybean rust Phakopsora pachyrhizi urediniospores of Phakopsora pachyrhizi
5369154 rust Tranzschelia spp. small, medium brown blister with white border
5369155 rust Tranzschelia spp. single pustule with urediniospores on leaf
5369156 rust Tranzschelia spp. cluster of urediniospores under dark-field observation
5369157 rust Tranzschelia spp. cluster of urediniospores under dark-field observation
5369158 rust Tranzschelia spp. close-up of urediniospores
5331062 dry bean rust Uromyces appendiculatus
5334025 cedar-apple rust Gymnosporangium juniperi-virginianae Symptoms and signs
5331061 dry bean rust Uromyces appendiculatus
1496206 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar - apple rust
5263068 daylily rust Puccinia hemerocallidis
5294057 daylily rust Puccinia hemerocallidis
5263064 daylily rust Puccinia hemerocallidis
5373858 rust Tranzschelia discolor
5373859 rust Tranzschelia discolor
5373857 rust Tranzschelia discolor
5373856 rust Tranzschelia discolor
5373855 rust Tranzschelia discolor
5373557 rust Puccinia lantanae
5373556 rust Puccinia lantanae
5373555 rust Puccinia lantanae
5373552 rust Puccinia lantanae
5373553 rust Puccinia lantanae
5373554 rust Puccinia lantanae
5373551 rust Puccinia lantanae
5373550 rust Puccinia lantanae
5257031 soybean rust Phakopsora pachyrhizi
5257034 soybean rust Phakopsora pachyrhizi
5257027 soybean rust Phakopsora pachyrhizi Soybean rust on lower surface of soybean
5372665 cedar-apple rust Gymnosporangium juniperi-virginianae
1473080 fir broom rust Melampsorella caryophyllacearum
5366989 comandra blister rust Cronartium comandrae Signs of comandra rust (Cronartium comandrae), exposed by squirrels, under the bark of a lodgepole pine.
1265016 soybean rust Phakopsora pachyrhizi Soybean rust damage that appears on upper leaves of soybean plants when advanced.
1263084 eastern pine gall rust Cronartium quercuum Uredinia on leaves
1263085 eastern pine gall rust Cronartium quercuum Telia
1263083 eastern pine gall rust Cronartium quercuum Aecia
1263078 spruce broom rust Chrysomyxa arctostaphyli Mature broom on spruce
1949021 cedar-apple rust Gymnosporangium juniperi-virginianae Aecial stage of Gymnosporangium juniperi-virginianae on apple fruit.
1949022 cedar-apple rust Gymnosporangium juniperi-virginianae Telia-producing gall (cedar apple) of Gymnosporangium juniperi-virginianae on the alternate host eastern red cedar (Juniperus virginiana).
0746049 fusiform rust Cronartium quercuum f.sp. fusiforme Slash pine (Pinus elliottii) growing near Miley, South Carolina, with various symptoms caused by Cronartium quercuum f. sp. fusiforme, including stem and branch galls, basal whorls of galls, mortality, wind breakage (stems weakened by the disease).
0746050 fusiform rust Cronartium quercuum f.sp. fusiforme Slash pine (Pinus elliottii) growing near Miley, South Carolina, with various symptoms caused by Cronartium quercuum f. sp. fusiforme, including stem and branch galls, basal whorls of galls, mortality and wind breakage (stems weakened by the disease)
0746048 fusiform rust Cronartium quercuum f.sp. fusiforme Telia of Cronartium quercuum f. sp. fusiforme on northern red oak (Quercus rubra).
0660079 hemlock rust Melampsora farlowii Tip blight on hemlock caused by Melampsora farlowii.
1473032 western gall rust Endocronartium harknessii
1473051 western gall rust Endocronartium harknessii tumor from "nobbles disease" gall rust; there are actually two diseases here: large, upper "burl" is a tumor and lower "gall" is hips canker incited by Perdermium harknessii (a stem rust).
1473059 coronado limb rust Cronartium arizonicum aecia on twig
1473166 stalactiform blister rust Cronartium coleosporioides
5363967 dry bean rust Uromyces appendiculatus A microphotograph of the germ tube and appressorium of a rust  fungus Uromyces appendiculatus on a dry bean leaf.
0656054 hemlock rust Melampsora farlowii Tsuga canadensis damaged by Melampsora farlowii, showing dead and dying (wilted) twigs in top and around outside of tree, with characteristic curlicued ends of diseased twigs.
5222083 cedar-apple rust Gymnosporangium juniperi-virginianae
5222082 cedar-apple rust Gymnosporangium juniperi-virginianae
5372659 Gynosporanium rusts Gymnosporangium spp.
5372259 southern cone rust Cronartium strobilinum
5366503 onion rust Puccinia allii A cultivated garlic leaf with a rust infection caused by Puccinia porri.
5366502 onion rust Puccinia allii A cultivated garlic leaf with a rust infection caused by Puccinia porri.
5366501 onion rust Puccinia allii A cultivated garlic leaf with a rust infection caused by Puccinia porri.
5366500 onion rust Puccinia allii A cultivated garlic leaf with a rust infection caused by Puccinia porri.
5366499 onion rust Puccinia allii A cultivated garlic leaf with a rust infection caused by Puccinia porri.
5366498 onion rust Puccinia allii A cultivated garlic leaf with a rust infection caused by Puccinia porri.
5366497 onion rust Puccinia allii A cultivated garlic plant with a rust infection caused by Puccinia porri.
5366496 onion rust Puccinia allii A cultivated garlic plant with a rust infection caused by Puccinia porri.
5366495 onion rust Puccinia allii A cultivated garlic field with a rust infection caused by Puccinia porri.
5366494 onion rust Puccinia allii A garlic leaf with a rust infection caused by Puccinia porri in the field.
5366493 onion rust Puccinia allii A garlic leaf with a rust infection caused by Puccinia porri in the field.
5366492 onion rust Puccinia allii A garlic leaf with a rust infection caused by Puccinia porri in the field.
5361617 rust Puccinia helianthi A sunflower head with red rust infection caused by Puccinia helianthi in the field.
5361616 rust Puccinia helianthi A sunflower head with red rust infection caused by Puccinia helianthi in the field.
5361615 rust Puccinia helianthi A sunflower head with red rust infection caused by Puccinia helianthi in the field.
5362696 rust Puccinia helianthi A sunflower leaf harboring the telial stage of the sunflower red rust fungus Puccinia helianthi in the field.
5362611 rust Puccinia helianthi A sunflower leaf with red rust infection caused by Puccinia helianthi in the field.
5362609 rust Puccinia helianthi A sunflower leaf with red rust infection caused by Puccinia helianthi in the field.
5362610 rust Puccinia helianthi A sunflower leaf with red rust infection caused by Puccinia helianthi in the field.
5362978 rust Puccinia aristidae Spinach leaves infected with  Puccinia aristidae, the spinach red rust  fungus.
5362977 rust Puccinia aristidae A close-up shot of a spinach leaf infected with  Puccinia aristidae, the spinach red rust  fungus.
5362976 rust Puccinia aristidae Spinach leaves with symptoms of spinach red rust infection caused by Puccinia aristidae in the field.
5362975 rust Puccinia aristidae Spinach leaves with symptoms of spinach red rust infection caused by Puccinia aristidae in the field.
5362974 rust Puccinia aristidae A spinach leaf with symptoms of spinach red rust infection caused by Puccinia aristidae in the field.
5362973 rust Puccinia aristidae Spinach leaves with symptoms of spinach red rust infection caused by Puccinia aristidae in the field.
5362972 rust Puccinia aristidae A spinach plant with symptoms of spinach red rust infection caused by Puccinia aristidae in the field.
5362971 rust Puccinia aristidae A spinach plant with symptoms of spinach red rust infection caused by Puccinia aristidae in the field.
5361072 oat crown rust Puccinia coronata var. avenae Three oat leaf specimens showing symptoms of oat crown rust infection caused by the fungus Puccinia coronata.
5360399 coffee leaf rust Hemileia vastatrix The use of Verticillium as a biocontrol agent for the coffee rust fungus Hemileia vastatrix in the field.
5360397 coffee leaf rust Hemileia vastatrix Coffee leaves showing symptoms of coffee rust infection caused by Hemileia vastatrix in the field.
5360398 coffee leaf rust Hemileia vastatrix Coffee leaves showing symptoms of coffee rust infection caused by Hemileia vastatrix in the field.
5369755 poplar rust Melampsora medusae Yellowish uredia fruiting bodies are on the underside of the leaf.
5369744 poplar rust Melampsora medusae Yellowish uredia on leaf underside produced shortly before leaf drop in early October
5033008 fir broom rust Melampsorella caryophyllacearum Aecia of M. caryophyllacearum
5033009 fir broom rust Melampsorella caryophyllacearum Aecia of balsam fir broom rust
5033010 fir broom rust Melampsorella caryophyllacearum Balsam fir broom rust broom
5033011 fir broom rust Melampsorella caryophyllacearum Balsam fir broom rust broom
5033013 fir broom rust Melampsorella caryophyllacearum Balsam fir broom rust broom
1473124 incense cedar broom rust Gymnosporangium libocedri sporophores; on 4/1/1964 in California
1473279 western gall rust Endocronartium harknessii hip canker; 1950
1473320 witches broom rust Gymnosporangium nelsonii leaf rust on serviceberry, broom on juniper; 8/16/1942
1473322 western gall rust Endocronartium harknessii Cankers on 30" dbh lodgepole pine. 1953
5358446 rust Puccinia helianthi A sunflower leaf showing symptoms of red rust infection caused Puccinia helianthi by in the field.
5358444 rust Puccinia helianthi A sunflower leaf showing symptoms of red rust infection caused Puccinia helianthi by in the field.
5358445 rust Puccinia helianthi A sunflower flowerhead showing symptoms of red rust infection caused Puccinia helianthi by in the field.
5358443 rust Puccinia helianthi A sunflower leaf showing symptoms of red rust infection caused Puccinia helianthi by in the field.
5358441 rust Puccinia helianthi A sunflower flowerhead showing symptoms of red rust infection caused Puccinia helianthi by in the field.
5358442 rust Puccinia helianthi A sunflower flowerhead and leaves showing symptoms of red rust infection caused Puccinia helianthi by in the field.
5358439 rust Puccinia helianthi A sunflower flowerhead showing symptoms of red rust infection caused Puccinia helianthi by in the field.
5358440 rust Puccinia helianthi A sunflower flowerhead showing symptoms of red rust infection caused Puccinia helianthi by in the field.
5358438 rust Puccinia helianthi Sunflower plants showing symptoms of red rust infection caused Puccinia helianthi by in the field.
5358436 rust Puccinia helianthi Sunflower plants showing symptoms of red rust infection caused Puccinia helianthi by in the field.
1473047 southwestern white-spored gall rust Peridermium (An undescribed species) White spores, highly contagious local distribution, separation of outer bark gives galls a 'collared' feature; when photo taken it was recognized that this rust has white spores and resembles P. harnessii. DNA data suggests these rusts in SW should be recognized as distinct taxa but not yet formally described. A species description and valid scientific name is still pending. Mycologia, 90(2), 1998, pp244-257. http://www.jstor.org/stable/3761300
1473054 southwestern white-spored gall rust Peridermium (An undescribed species) White-spored gall rust with white spores and collored gall on Ponderosa pine. Although previously thought to be a white-spored variation of western gall rust, this rust is probably a distinctly separate species. A species description and valid scientific name is still pending. Mycologia, 90(2), 1998, pp244-257. http://www.jstor.org/stable/3761300
5357463 crown rust Puccinia coronata Crown rust (Puccinia coronata) infected oat straws on buckthorn bush (Rhamnus carthartica) in the field.
5357461 oat stem rust Puccinia graminis f.sp. avenae An oat plant infected with the oat stem rust fungus (Puccinia graminis f.sp. avenae) in the field.
5357457 crown rust Puccinia coronata Close-up view of aecia and pycnia of crown rust of oat (Puccinia coronata) on a leaf of its alternate host, common buckthorn (Rhamnus cathartica).
5357456 crown rust Puccinia coronata Evidence of infection with crown rust (Puccinia coronata) on oat leaves.
2144076 pinyon blister rust Cronartium occidentale Sporulating canker erupting through bark with older infection area visible
5362982 rust Puccinia aristidae Leaf of a beet plant showing symptoms of infection with spinach red rust (Puccinia aristidae).
5358415 rust Puccinia aristidae Close-up view of a beet leaf showing symptoms of infection with spinach red rust (Puccinia aristidae).
5358414 rust Puccinia aristidae Leaf of a beet plant showing symptoms of infection with spinach red rust (Puccinia aristidae).
5365336 dry bean rust Uromyces appendiculatus Rust pycnia (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5361001 dry bean rust Uromyces appendiculatus Rust (Uromyces appendiculatus) infection of a snap bean leaflet.
5360999 dry bean rust Uromyces appendiculatus Rust (Uromyces appendiculatus) infection of a snap bean plant.
5360998 dry bean rust Uromyces appendiculatus Rust (Uromyces appendiculatus) infection of a snap bean field.
5366979 white pine blister rust Cronartium ribicola Currant leaf showing signs of white pine blister rust (Cronartium ribicola).
5366978 fir broom rust Melampsorella caryophyllacearum Witches' brooms in a fir tree, caused by fir broom rust (Melampsorella caryophyllacearum).
5366968 Melampsora rusts Melampsora spp. Willow leaves showing signs of the rust, Melampsora epitea.
5366967 Melampsora rusts Melampsora spp. Aspen leaf showing signs of Melampsora sp. rust.
5366964 Gynosporanium rusts Gymnosporangium spp. Telia of rust (Gymnosporangium sp.) on the foliage of a juniper.
5366962 Gynosporanium rusts Gymnosporangium spp. Aecia of rust (Gymnosporangium sp.) on the leaf of a hawthorn.
5366957 rust Gymnosporangium nidus-avis Close-up view of juniper broom rust (Gymnosporangium nidus-avis) on the foliage of a Rocky Mountain juniper.
5357516 dry bean rust Uromyces appendiculatus A greenhouse inoculation of a bean plant with the bean rust fungus Uromyces appendiculatus.
5366993 limb rust Peridermium filamentosum Ponderosa pine tree showing evidence of infection with limb rust (Peridermium filamentosum).
5366992 limb rust Peridermium filamentosum Evidence of limb rust (Peridermium filamentosum) on the branch of a ponderosa pine.
5366991 limb rust Peridermium filamentosum Evidence of limb rust (Peridermium filamentosum) on the limb of a ponderosa pine.
5366990 comandra blister rust Cronartium comandrae "Spike top" symptom of comandra rust (Cronartium comandrae) in a lodgepole pine.
5366988 comandra blister rust Cronartium comandrae Signs of comandra rust (Cronartium comandrae) on the limb of a lodgepole pine.
5366987 comandra blister rust Cronartium comandrae Signs of comandra rust (Cronartium comandrae) on the trunk of a lodgepole pine.
5366986 comandra blister rust Cronartium comandrae Signs of comandra rust (Cronartium comandrae) on the trunk of a pine.
5366985 comandra blister rust Cronartium comandrae Comandra plant showing signs of comandra blister rust (Cronartium comandrae), which affects pines.
5366984 comandra blister rust Cronartium comandrae Comandra plant showing signs of comandra blister rust (Cronartium comandrae), which affects pines.
5366983 comandra blister rust Cronartium comandrae Comandra plant showing signs of comandra blister rust (Cronartium comandrae), which affects pines.
5366982 white pine blister rust Cronartium ribicola Signs of white pine blister rust (Cronartium ribicola) on the trunk of a sugar pine.  
5366981 white pine blister rust Cronartium ribicola Signs of white pine blister rust (Cronartium ribicola) on a branch of limber pine.
5366980 white pine blister rust Cronartium ribicola Signs of white pine blister rust (Cronartium ribicola) on a branch of limber pine.
5366977 fir broom rust Melampsorella caryophyllacearum Fir tree showing characteristic symptoms of fir broom rust (Melampsorella caryophyllacearum).
5366976 spruce broom rust Chrysomyxa arctostaphyli Spruce tree showing symptoms of spruce broom rust, Chrysomyxa arctostaphyli.
5366975 spruce broom rust Chrysomyxa arctostaphyli Spruce trees exhibiting symptoms of spruce broom rust, Chrysomyxa arctostaphyli.
5366972 Melampsora rusts Melampsora spp. Symptoms of rust infection (Melampsora sp.) in cottonwood.
5366971 Melampsora rusts Melampsora spp. Rust spores (Melampsora sp.) on a cottonwood leaf.
5366970 Melampsora rusts Melampsora spp. Signs of rust spores (Melampsora sp.) on lanceleaf cottonwood.
5366969 Melampsora rusts Melampsora spp. Microscope view of rust spores (Melampsora sp.) from lanceleaf cottonwood.
5366966 western gall rust Endocronartium harknessii Pine tree in a plantation showing symptoms of western gall rust.
5366965 western gall rust Endocronartium harknessii Hip canker of western gall rust (Endocronartium harknessii) on a lodgepole pine.
5366961 Gynosporanium rusts Gymnosporangium spp. Telia of Gymnosporangium rust (Gymnosporangium sp.) on la juniper.
5366960 Gynosporanium rusts Gymnosporangium spp. Gymnosporangium rust (Gymnosporangium sp.) on a leaf of Toba hawthorn (Crataegus x mordenensis).
5366959 Gynosporanium rusts Gymnosporangium spp. Aecia of Gymnosporangium rust (Gymnosporangium sp.) on leaves of a hawthorn.
5366958 Gynosporanium rusts Gymnosporangium spp. Aecia of Gymnosporangium rust (Gymnosporangium sp.) on leaves of Toba hawthorn (Crataegus x mordenensis).
5366956 Gynosporanium rusts Gymnosporangium spp. Witches' brooms in a juniper, caused by a rust (Gymnosporangium sp.).
5366955 Gynosporanium rusts Gymnosporangium spp. Juniper rust (Gymnosporangium sp.) on its alternate host, serviceberry.
5366954 Gynosporanium rusts Gymnosporangium spp. Juniper tree with witches' broom caused by juniper broom rust.
5366953 juniper broom rust Gymnosporangium speciosum Symptoms of orange gall rust (Gymnosporangium speciosum) on a juniper.
5366952 juniper broom rust Gymnosporangium speciosum Orange gall rust (Gymnosporangium speciosum) on a juniper.
5357475 eastern pine gall rust Cronartium quercuum Ponderosa pine showing symptoms of eastern pine gall rust caused by the fungus Cronatium quercuum.
5357473 cedar-apple rust Gymnosporangium juniperi-virginianae Rust galls on a cedar tree serving as an alternate host to the cedar-apple rust fungus Gymnosporangium juniperi-virginianae.
5357472 cedar-apple rust Gymnosporangium juniperi-virginianae Rust galls on a cedar tree serving as an alternate host to the cedar-apple rust fungus Gymnosporangium juniperi-virginianae.
5362139 white pine blister rust Cronartium ribicola Close-up view of the aecia of white pine blister rust (Cronartium ribicola) on the branch of a pine tree.
5362137 white pine blister rust Cronartium ribicola Aecia of white pine blister rust (Cronartium ribicola) on the trunk of a pine tree.
5366963 Gynosporanium rusts Gymnosporangium spp. Telia of rust (Gymnosporangium sp.) on a juniper twig.
5362981 rust Puccinia aristidae Lambsquarters (Chenopodium album) showing symptoms of spinach red rust (Puccinia aristidae).
5362980 rust Puccinia aristidae Lambsquarters (Chenopodium album) showing symptoms of spinach red rust (Puccinia aristidae).
5362979 rust Puccinia aristidae Lambsquarters (Chenopodium album) showing symptoms of spinach red rust (Puccinia aristidae).
5357458 puccinia rusts Puccinia spp. Thistle showing signs of rust.
5357248 rust Puccinia helianthi Close-up view of the aecium of sunflower red rust (Puccinia helianthi) on a volunteer sunflower plant (Helianthus annuus).
5357247 rust Puccinia helianthi Close-up view of the pycnium of sunflower red rust (Puccinia helianthi) on a volunteer sunflower plant (Helianthus annuus).
5357246 rust Puccinia helianthi Close-up view of the sexual spores of sunflower red rust (Puccinia helianthi) on a volunteer sunflower plant (Helianthus annuus).
5357245 rust Puccinia helianthi Sexual spores of sunflower red rust (Puccinia helianthi) on a volunteer sunflower plant (Helianthus annuus).
5357244 rust Puccinia helianthi Sexual spores of sunflower red rust (Puccinia helianthi) on a volunteer sunflower plant (Helianthus annuus).
5357243 rust Puccinia helianthi Sexual spores of sunflower red rust (Puccinia helianthi) on a volunteer sunflower plant (Helianthus annuus).
2143070 pinyon blister rust Cronartium occidentale with pitch mass borer (Diorychtria spp.)
2143071 pinyon blister rust Cronartium occidentale old canker with possible pitch mass borer;
2143072 pinyon blister rust Cronartium occidentale old canker with possible pitch mass borer
2143075 pinyon blister rust Cronartium occidentale cut end of branch showing canker cross-section;
2143076 pinyon blister rust Cronartium occidentale sporulating canker erupting through bark;
2143077 pinyon blister rust Cronartium occidentale sporulating canker erupting through bark;
2143078 pinyon blister rust Cronartium occidentale sporulating canker erupting through bark;
2143079 pinyon blister rust Cronartium occidentale sporulating canker erupting through bark;
2143080 pinyon blister rust Cronartium occidentale branch with sporulating canker and a branch of Ribes sp.
2143081 pinyon blister rust Cronartium occidentale old canker with possible bark beetle frass;
2143083 pinyon blister rust Cronartium occidentale flagging branch showing the causal canker; Ribes spp. twig along side
2143084 pinyon blister rust Cronartium occidentale cutting branch samples with pole pruner;
2143085 pinyon blister rust Cronartium occidentale bark removed to show sporulating canker
2143087 pinyon blister rust Cronartium occidentale cut end of branch showing canker cross-section
2143088 pinyon blister rust Cronartium occidentale cut end of branch showing canker cross-section
2143089 pinyon blister rust Cronartium occidentale bark removed to show sporulating canker
2143090 pinyon blister rust Cronartium occidentale sporulating canker
2143091 pinyon blister rust Cronartium occidentale sporulating canker
2143092 pinyon blister rust Cronartium occidentale old canker with pitch mass borer frass visible
2143094 pinyon blister rust Cronartium occidentale infected branch cut into sections for transport
2143095 pinyon blister rust Cronartium occidentale infected branch cut into sections for transport
2145035 Gynosporanium rusts Gymnosporangium spp. Epicormic branching/brooming possibly from G. speciosum (G. bethelii and G. nelsonii noted in NM);
2145040 pinyon blister rust Cronartium occidentale new blister eruptions;
2145041 pinyon blister rust Cronartium occidentale rough bark around infection;
2145054 pinyon blister rust Cronartium occidentale Rough bark on tree with some removed to expose sporulating canker (older pitch mass borer also visible);
2145055 pinyon blister rust Cronartium occidentale Rough bark on tree with some removed to expose sporulating canker;
2145056 pinyon blister rust Cronartium occidentale Rough bark on tree with some removed to expose sporulating canker;
2145057 pinyon blister rust Cronartium occidentale old canker on bole
2145058 pinyon blister rust Cronartium occidentale Rough bark on tree with some removed to expose sporulating canker;
2145061 pinyon blister rust Cronartium occidentale Discolored, rough bark with sporulating canker visible below pitch mass borer;
2145062 pinyon blister rust Cronartium occidentale Discolored, rough bark with several sporulating cankers visible;.
2145063 pinyon blister rust Cronartium occidentale regeneration tree killed by canker;
2145064 pinyon blister rust Cronartium occidentale old canker on regeneration tree;
2145065 pinyon blister rust Cronartium occidentale old canker on regeneration tree;
2145066 pinyon blister rust Cronartium occidentale old canker on regeneration tree;
2145067 pinyon blister rust Cronartium occidentale old canker on regeneration tree;
2145069 pinyon blister rust Cronartium occidentale Rough bark and pitching with sporulating canker exposed;
2145070 pinyon blister rust Cronartium occidentale Rough bark and pitching with sporulating canker exposed;
2145068 Cronartium gall rusts Cronartium spp.
2145071 pinyon blister rust Cronartium occidentale Rough bark and pitching with sporulating canker exposed;
2145072 pinyon blister rust Cronartium occidentale Tree crown with many dead branches due largely to pinyon blister rust infections;
2145074 pinyon blister rust Cronartium occidentale old canker on dead branch;
2145075 pinyon blister rust Cronartium occidentale branch mortality;
2145078 pinyon blister rust Cronartium occidentale branch mortality;
2145079 pinyon blister rust Cronartium occidentale Sporulating canker exposed;
2145080 pinyon blister rust Cronartium occidentale rough bark;
5014072 pinyon blister rust Cronartium occidentale branch flagging resulting from infection
5356775 wheat stem rust Puccinia graminis Stalk of winter wheat showing signs and symptoms of wheat stem rust (Puccinia graminis f.sp. tritici).
5356743 rust Puccinia hordei Leaf of winter wheat showing signs and symptoms of wheat leaf rust (originally described as Puccinia recondita).
5357107 wheat stem rust Puccinia graminis Telia of stem rust (Puccinia graminis) on winter wheat stubble.
5361310 dry bean rust Uromyces appendiculatus Bean leaf showing symptoms of rust (Uromyces appendiculatus) in variety trials conducted by Colorado State University.
5362128 stripe rust Puccinia striiformis Close-up view of spring wheat leaves showing signs and symptoms of stripe rust (Puccinia striiformis).
5362126 stripe rust Puccinia striiformis Close-up view of spring wheat leaves showing signs and symptoms of stripe rust (Puccinia striiformis).
5362124 stripe rust Puccinia striiformis Close-up view of a spring wheat leaf showing signs and symptoms of stripe rust (Puccinia striiformis).
5362122 stripe rust Puccinia striiformis Close-up view of spring wheat leaves showing signs and symptoms of stripe rust (Puccinia striiformis).
5362118 stripe rust Puccinia striiformis Close-up view of spring wheat leaves showing signs and symptoms of stripe rust (Puccinia striiformis).
5362120 stripe rust Puccinia striiformis Close-up view of spring wheat leaves showing signs and symptoms of stripe rust (Puccinia striiformis).
5362114 stripe rust Puccinia striiformis Spring wheat plants showing signs and symptoms of stripe rust (Puccinia striiformis).
5362116 stripe rust Puccinia striiformis Spring wheat plants showing signs and symptoms of stripe rust (Puccinia striiformis).
5362112 stripe rust Puccinia striiformis Spring wheat plants showing signs and symptoms of stripe rust (Puccinia striiformis).
5362110 stripe rust Puccinia striiformis Spring wheat plants showing signs and symptoms of stripe rust (Puccinia striiformis).
5359597 stripe rust Puccinia striiformis Stripe rust (Puccinia striiformis) on leaves of winter wheat.
5359591 rust Puccinia hordei Leaf rust (Puccinia recondita f.sp. tritici) on winter wheat.
5359590 wheat stem rust Puccinia graminis Stem rust (Puccinia graminis f.sp. tritici) on winter wheat.
5357462 wheat stem rust Puccinia graminis Aecia of wheat rust (Puccinia graminis  f.sp. tritici) on its alternate host, barberry.
5357242 rust Puccinia helianthi Sexual spores of rust (Puccinia helianthi) on a volunteer sunflower plant growing as a weed in a field of winter wheat.
5362465 dry bean rust Uromyces appendiculatus   A 1997 ARDEC drybeans field for the rust fungus, Uromyces appendiculatus, research.
5362087 dry bean rust Uromyces appendiculatus A scenic view of a drybean field infected with rust (Uromyces appendiculatus).
5365617 dry bean rust Uromyces appendiculatus A volumteer drybean plant showing symptoms of the rust fungus Uromyces appendiculatus.
5365616 dry bean rust Uromyces appendiculatus A volumteer drybean plant showing symptoms of the rust fungus Uromyces appendiculatus.
5365362 dry bean rust Uromyces appendiculatus Blisters (young uredia) on bean leaves, due to infection with bean rust (Uromyces appendiculatus).
5365361 dry bean rust Uromyces appendiculatus Blisters (young uredia) on a bean leaf, due to infection with bean rust (Uromyces appendiculatus).
5365360 dry bean rust Uromyces appendiculatus Uredia and necrosis on a bean leaf, due to infection with bean rust (Uromyces appendiculatus).
5365359 dry bean rust Uromyces appendiculatus Telia and uredia of bean rust (Uromyces appendiculatus) on the leaves of a bean plant.
5365358 dry bean rust Uromyces appendiculatus Telia of bean rust (Uromyces appendiculatus) on the leaf of a bean plant.
5365357 dry bean rust Uromyces appendiculatus Telia of bean rust (Uromyces appendiculatus) on the leaf of a bean plant.
5365356 dry bean rust Uromyces appendiculatus Telia of bean rust (Uromyces appendiculatus) on the stem of a bean plant.
5365355 dry bean rust Uromyces appendiculatus Aecia of bean rust (Uromyces appendiculatus) on the stem of a dry bean plant inoculated in the greenhouse.
5365354 dry bean rust Uromyces appendiculatus Aecia of bean rust (Uromyces appendiculatus) on the stem of a dry bean plant inoculated in the greenhouse.
5365353 dry bean rust Uromyces appendiculatus Aecia of bean rust (Uromyces appendiculatus) on the stem of a dry bean plant inoculated in the greenhouse.
5365352 dry bean rust Uromyces appendiculatus Pycnia and aecia of bean rust (Uromyces appendiculatus) on the stems of dry bean plants inoculated in the greenhouse.
5365351 dry bean rust Uromyces appendiculatus Close-up view of aecia of bean rust (Uromyces appendiculatus) on the stem of a dry bean plant inoculated in the greenhouse.
5365350 dry bean rust Uromyces appendiculatus Aecia of bean rust (Uromyces appendiculatus) on the stem of a dry bean plant inoculated in the greenhouse.
5365349 dry bean rust Uromyces appendiculatus Aecia of bean rust (Uromyces appendiculatus) on the petiole of a dry bean plant inoculated in the greenhouse.
5365348 dry bean rust Uromyces appendiculatus Pycnia of rust (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5365346 dry bean rust Uromyces appendiculatus Aecia of bean rust (Uromyces appendiculatus) on the stems of volunteer dry bean plants.
5365347 dry bean rust Uromyces appendiculatus Rust pycnium (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5365345 dry bean rust Uromyces appendiculatus Aecia of bean rust (Uromyces appendiculatus) on the leaves of volunteer dry bean plants.
5365344 dry bean rust Uromyces appendiculatus Aecium of bean rust (Uromyces appendiculatus) on the petiole of a volunteer dry bean plant.
5365343 dry bean rust Uromyces appendiculatus Aecia and pycnia of bean rust (Uromyces appendiculatus) on the leaves and stem of a volunteer dry bean plant.
5365342 dry bean rust Uromyces appendiculatus Rust (Uromyces appendiculatus) aecia and pycnia on the leaves of a volunteer dry bean plant.
5365341 dry bean rust Uromyces appendiculatus Rust pycnia (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5365340 dry bean rust Uromyces appendiculatus Rust pycnia (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5365339 dry bean rust Uromyces appendiculatus Rust pycnia (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5365338 dry bean rust Uromyces appendiculatus Rust pycnia (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5365337 dry bean rust Uromyces appendiculatus Rust pycnium (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5365334 dry bean rust Uromyces appendiculatus Rust pycnia (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5365335 dry bean rust Uromyces appendiculatus Rust pycnia (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5365332 dry bean rust Uromyces appendiculatus Rust aecium (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5365333 dry bean rust Uromyces appendiculatus Rust aecia (Uromyces appendiculatus) on the leaf of a volunteer dry bean plant.
5361601 dry bean rust Uromyces appendiculatus Rust (Uromyces appendiculatus) focal point in a field of dry beans.
5363674 dry bean rust Uromyces appendiculatus Symptoms of bean rust (Uromyces appendiculatus) on the pinto bean cultivar "Cahone."
5363673 dry bean rust Uromyces appendiculatus Symptoms of bean rust (Uromyces appendiculatus) on the pinto bean cultivar "UI126."
5363672 dry bean rust Uromyces appendiculatus Symptoms of bean rust (Uromyces appendiculatus) on the pinto bean cultivar "UI114."
5363671 dry bean rust Uromyces appendiculatus Symptoms of bean rust (Uromyces appendiculatus) on the dry bean cultivar "NW410."
5363670 dry bean rust Uromyces appendiculatus Plants of the dry bean variety "Fisher Pinto," showing symptoms of bean rust (Uromyces appendiculatus).
5363669 dry bean rust Uromyces appendiculatus Plants of the dry bean variety "Chase Pinto," showing no sign of bean rust (Uromyces appendiculatus).
5363578 dry bean rust Uromyces appendiculatus Plots used by Colorado State University to research pesticide use against bean rust (Uromyces appendiculatus).
5363957 dry bean rust Uromyces appendiculatus Advanced symptoms of bean rust (Uromyces appendiculatus) in the canopy of a bean field.
5363954 dry bean rust Uromyces appendiculatus Early symptoms of bean rust (Uromyces appendiculatus) in a field, showing the focal location of infection.
5363955 dry bean rust Uromyces appendiculatus Early symptoms of bean rust (Uromyces appendiculatus) in a field, showing the focal location of infection.
5363966 dry bean rust Uromyces appendiculatus Microphotograph of the germinating tubes of rust  spores (Uromyces appendiculatus)  on a dry bean leaf.
5363965 dry bean rust Uromyces appendiculatus Microphotograph of the germinating tubes of rust spores (Uromyces appendiculatus) on a dry bean leaf.
5363964 dry bean rust Uromyces appendiculatus Symptoms of dry bean rust (Uromyces appendiculatus) after spot inoculation of a leaf in the laboratory, demonstrating resistance to infection.
5363963 dry bean rust Uromyces appendiculatus Symptoms of dry bean rust (Uromyces appendiculatus) after spot inoculation of a leaf in the laboratory, demonstrating a susceptible reaction.
5363962 dry bean rust Uromyces appendiculatus Spot inoculation of a dry bean leaflet with rust (Uromyces appendiculatus) urediniospores.
5363961 dry bean rust Uromyces appendiculatus Urediniospores and teliospores of bean rust (Uromyces appendiculatus) under the microscope.
5363960 dry bean rust Uromyces appendiculatus Portions of dry bean leaves demonstrating various sizes of rust pustules (Uromyces appendicultus) on the upper and  under surfaces of leaves.
5363959 dry bean rust Uromyces appendiculatus Series of leaves showing degrees of rust (Uromyces appendiculatus) incidence in dry beans.
5363958 dry bean rust Uromyces appendiculatus Advanced symptoms of bean rust (Uromyces appendiculatus) in a field.
5363956 dry bean rust Uromyces appendiculatus Advanced symptoms of bean rust (Uromyces appendiculatus) in a field, showing the focal location of infection.
5363953 dry bean rust Uromyces appendiculatus Rust (Uromyces appendiculatus) reaction on the dry bean varieties UI126 and Bill Z.
5363952 dry bean rust Uromyces appendiculatus Focal location of bean rust (Uromyces appendiculatus) infection in a field, adjacent to a plot where fungicide has been applied.
5363951 dry bean rust Uromyces appendiculatus Field of dry bean plants defoliated due to infection with bean rust (Uromyces appendiculatus).
5363950 dry bean rust Uromyces appendiculatus Rust telia (Uromyces appendiculatus) on bean pods in the field.
5363949 dry bean rust Uromyces appendiculatus Rust telia (Uromyces appendiculatus) on stems and pods of bean plants in the field.
5363948 dry bean rust Uromyces appendiculatus Rust uredia and telia (Uromyces appendiculatus) on the surface of a bean leaf.
5363947 dry bean rust Uromyces appendiculatus Rust uredia (Uromyces appendiculatus) on the underside of bean leaflets.
5363946 dry bean rust Uromyces appendiculatus Rust uredia (Uromyces appendiculatus) on the upper surface of bean leaflets.
5363945 dry bean rust Uromyces appendiculatus Aecia of rust (Uromyces appendiculatus) on the leaf of a volunteer bean plant.
5363944 dry bean rust Uromyces appendiculatus Telia of rust (Uromyces appendiculatus) on the stem of a bean plant.
5363943 dry bean rust Uromyces appendiculatus Symptoms of rust (Uromyces appendiculatus) on the stem of a bean plant.
5361048 dry bean rust Uromyces appendiculatus Bean plants defoliated by rust (Uromyces appendiculatus).
5361047 dry bean rust Uromyces appendiculatus Bean plants severely infested with rust (Uromyces appendiculatus).
5361412 dry bean rust Uromyces appendiculatus Aerial view of nursery experiments with pestcide applications in a study of the pathology of bean rust (Uromyces appendiculatus).
5361411 dry bean rust Uromyces appendiculatus Reaction of bean plants to rust (Uromyces appendiculatus) in a variety trial in the field.
5361410 dry bean rust Uromyces appendiculatus Uredinia of bean rust (Uromyces appendiculatus) on a bean pod.
5361409 dry bean rust Uromyces appendiculatus Uredinia of bean rust (Uromyces appendiculatus) on plants, causing wilting of the bean canopy in the field.
5361408 dry bean rust Uromyces appendiculatus Defoliation of bean plants due to bean rust (Uromyces appendiculatus), with telia on the plants.
5361407 dry bean rust Uromyces appendiculatus Uredinia of bean rust (Uromyces appendiculatus) on the leaves of plants in the field.
5361406 dry bean rust Uromyces appendiculatus Bean leaves displaying the "green island effect" of bean rust (Uromyces appendiculatus).
5361405 dry bean rust Uromyces appendiculatus Uredinia of rust (Uromyces appendiculatus) on the upper surface of a bean leaf.
5361404 dry bean rust Uromyces appendiculatus Leaves of volunteer bean plants infected with young and mature uredia of bean rust.
5361403 dry bean rust Uromyces appendiculatus Stem of a volunteer bean plant infected with the pycnia and aecia of bean rust.
5361402 dry bean rust Uromyces appendiculatus Leaves of volunteer bean plants infected with the pycnia, aecia, and uredia of bean rust.
5361400 dry bean rust Uromyces appendiculatus Inoculating bean leaves with rust spores (bean rust, Uromyces appendiculatus) in the greenhouse.
5361399 dry bean rust Uromyces appendiculatus "Harvesting" the urediniospores of bean rust (Uromyces appendiculatus) from bean leaves in the greenhouse.
5361398 dry bean rust Uromyces appendiculatus Telia of bean rust (Uromyces appendiculatus) on a bean leaf.
5360424 dry bean rust Uromyces appendiculatus A team of researchers at a drybean rust (Uromyces appendiculatus) nursery at Zamorano, Honduras.
5360432 dry bean rust Uromyces appendiculatus A team of researchers at a drybean rust (Uromyces appendiculatus) nursery at Zamorano, Honduras.
5360423 dry bean rust Uromyces appendiculatus A drybean rust (Uromyces appendiculatus) nursery at Zamorano, Honduras.
5360422 dry bean rust Uromyces appendiculatus A team of researchers at a drybean rust (Uromyces appendiculatus) nursery at Zamorano, Honduras.
5360411 dry bean rust Uromyces appendiculatus Rust telia (Uromyces appendiculatus) on drybeans (Phaseolus coccineus) at Tamulipas, Honduras.
5360410 dry bean rust Uromyces appendiculatus Dermont Coyne and Rennie Stavely examing rust (Uromyces appendiculatus) on drybeans (Phaseolus coccineus) at Tamulipas, Honduras.
5360408 dry bean rust Uromyces appendiculatus Rust (Uromyces appendiculatus) on wild drybeans (Phaseolus vulgaris) in the wild at Tamulipas, Honduras.
5360409 dry bean rust Uromyces appendiculatus Rust (Uromyces appendiculatus) on wild drybeans (Phaseolus vulgaris) in the wild at Tamulipas, Honduras.
5360407 dry bean rust Uromyces appendiculatus Jim Groth examing rust (Uromyces appendiculatus) on wild drybeans (Phaseolus vulgaris) in the wild.
5358987 dry bean rust Uromyces appendiculatus Field of dry beans displaying prominent symptoms of bean rust (Uromyces appendiculatus) near Ovid, Colorado.
5358386 dry bean rust Uromyces appendiculatus Volunteer bean plants in field corn - a potential source of infection with bean rust (Uromyces appendiculatus).
5357179 dry bean rust Uromyces appendiculatus Close-up view of a pycnium and an aecium of bean rust (Uromyces appendiculatus).
5357178 dry bean rust Uromyces appendiculatus Close-up view of a pycnium and an aecium of bean rust (Uromyces appendiculatus).
5357177 dry bean rust Uromyces appendiculatus Close-up view of the pycnium of bean rust (Uromyces appendiculatus).
5357176 dry bean rust Uromyces appendiculatus Close-up view of the pycnium of bean rust (Uromyces appendiculatus).
5366488 onion rust Puccinia allii Evidence of Puccinia porri (P. allii), a rust infecting onions.
5366489 onion rust Puccinia allii Pustules of Puccinia porri (P. allii), a rust infecting onions.
2141066 comandra blister rust Cronartium comandrae
2142018 Gynosporanium rusts Gymnosporangium spp. telia; likely Gymnosporangium speciosum
1524058 Southern corn rust Puccinia polysora
1473029 western gall rust Endocronartium harknessii Hip canker caused by the pine rust E. harnessii but most western forest pathologists use the older form-genus name Peridermium rather than the Yazu's construct.
1473025 spruce broom rust Chrysomyxa arctostaphyli
1473321 witches broom rust Gymnosporangium nelsonii leaf rust on serviceberry, broom on juniper; 1941
1473019 spruce broom rust Chrysomyxa arctostaphyli
1473030 western gall rust Endocronartium harknessii
1473031 western gall rust Endocronartium harknessii
1473052 comandra blister rust Cronartium comandrae bole canker with resinous and rodent chewing
1473053 stalactiform blister rust Cronartium coleosporioides
1473058 limb rust Peridermium filamentosum aecia on twig
1473060 limb rust Peridermium filamentosum rust is killing the tree
1473061 spruce broom rust Chrysomyxa arctostaphyli broom
1473062 fir broom rust Melampsorella caryophyllacearum trunk canker has killed tree
1473091 comandra blister rust Cronartium comandrae rust canker
1473092 comandra blister rust Cronartium comandrae dying tree girdled by rust canker
1473094 comandra blister rust Cronartium comandrae 25' canker from comandera blister rust that has been feed upon by a porcupine
1473095 spruce broom rust Chrysomyxa arctostaphyli broom after infected needles produced in present year have shed
1473111 western gall rust Endocronartium harknessii 1959; "one sided" canker
1473323 limb rust Peridermium filamentosum Girdling ponderosa pine sapling on Wing Mountain after spore dissemination. 1954
1493129 wheat leaf rust Puccinia recondita
5257029 chrysanthemum white rust Puccinia horiana
5257030 chrysanthemum white rust Puccinia horiana
1493022 wheat stem rust Puccinia graminis
1493023 wheat stem rust Puccinia graminis
1496189 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar apple rust on apples
1496203 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar apple rust on apple
1496209 quince rust Gymnosporangium clavipes Quince rust on apple
1496207 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar apple rust
1496210 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar apple
1496216 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar apple rust on apple leaf
1496449 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar apple rust on apple
1493130 wheat leaf rust Puccinia recondita
1493020 wheat leaf rust Puccinia recondita
1493026 wheat leaf rust Puccinia recondita
1493048 oat stem rust Puccinia graminis f.sp. avenae
1492104 rust Tranzschelia discolor f.sp. persicae
1473319 juniper broom rust Gymnosporangium speciosum 1940; telial mass
5202099 poplar rust Melampsora medusae The causal agent of poplar leaf rust (also called conifer-aspen rust) fruiting on tamarack.
1525103 rust Uromyces dianthi Photographer
1524057 Southern corn rust Puccinia polysora
1525148 chrysanthemum white rust Puccinia horiana
5264040 daylily rust Puccinia hemerocallidis micrograph
5264041 daylily rust Puccinia hemerocallidis micrograph
5264042 daylily rust Puccinia hemerocallidis micrograph
5264043 daylily rust Puccinia hemerocallidis micrograph
5264044 daylily rust Puccinia hemerocallidis micrograph
5264045 daylily rust Puccinia hemerocallidis micrograph
5264046 daylily rust Puccinia hemerocallidis micrograph
5264047 daylily rust Puccinia hemerocallidis micrograph
5264048 daylily rust Puccinia hemerocallidis micrograph
5264049 daylily rust Puccinia hemerocallidis micrograph
5264050 daylily rust Puccinia hemerocallidis micrograph
5264051 daylily rust Puccinia hemerocallidis micrograph
5264052 daylily rust Puccinia hemerocallidis micrograph
5264053 daylily rust Puccinia hemerocallidis micrograph
5264054 daylily rust Puccinia hemerocallidis micrograph
5264055 daylily rust Puccinia hemerocallidis micrograph
5264056 daylily rust Puccinia hemerocallidis micrograph
5264057 daylily rust Puccinia hemerocallidis micrograph
5264058 daylily rust Puccinia hemerocallidis micrograph
5264059 daylily rust Puccinia hemerocallidis micrograph
5264060 daylily rust Puccinia hemerocallidis micrograph
5264061 daylily rust Puccinia hemerocallidis micrograph
5264062 daylily rust Puccinia hemerocallidis micrograph
5264063 daylily rust Puccinia hemerocallidis micrograph
5264064 daylily rust Puccinia hemerocallidis micrograph
5264065 daylily rust Puccinia hemerocallidis micrograph
5264066 daylily rust Puccinia hemerocallidis micrograph
5264067 daylily rust Puccinia hemerocallidis micrograph
5264068 daylily rust Puccinia hemerocallidis micrograph
5268039 daylily rust Puccinia hemerocallidis telia and teliaspores
5268004 guava rust Puccinia psidii micrograph
5268001 guava rust Puccinia psidii micrograph
5267093 guava rust Puccinia psidii micrograph
5267097 guava rust Puccinia psidii micrograph
5268047 daylily rust Puccinia hemerocallidis uredospores
5222073 American hawthorn rust Gymnosporangium globosum
1398220 eastern pine gall rust Cronartium quercuum Globose gall typical of the pine-oak and pine-pine gall rusts on jack pine. Black River State Forest, Jackson Co., WI.
5263085 daylily rust Puccinia hemerocallidis
5263086 daylily rust Puccinia hemerocallidis
5263087 daylily rust Puccinia hemerocallidis
5263088 daylily rust Puccinia hemerocallidis
5263089 daylily rust Puccinia hemerocallidis
5263090 daylily rust Puccinia hemerocallidis
5263091 daylily rust Puccinia hemerocallidis
5263092 daylily rust Puccinia hemerocallidis
5263093 daylily rust Puccinia hemerocallidis
5263094 daylily rust Puccinia hemerocallidis
5263095 daylily rust Puccinia hemerocallidis
5263096 daylily rust Puccinia hemerocallidis
5263097 daylily rust Puccinia hemerocallidis
5263098 daylily rust Puccinia hemerocallidis
5263099 daylily rust Puccinia hemerocallidis
5263100 daylily rust Puccinia hemerocallidis
5264001 daylily rust Puccinia hemerocallidis
5264002 daylily rust Puccinia hemerocallidis
5264003 daylily rust Puccinia hemerocallidis
5264004 daylily rust Puccinia hemerocallidis
5264005 daylily rust Puccinia hemerocallidis
5264006 daylily rust Puccinia hemerocallidis
5264007 daylily rust Puccinia hemerocallidis
5264008 daylily rust Puccinia hemerocallidis
5264009 daylily rust Puccinia hemerocallidis
5264010 daylily rust Puccinia hemerocallidis
5264011 daylily rust Puccinia hemerocallidis
5264012 daylily rust Puccinia hemerocallidis
5264013 daylily rust Puccinia hemerocallidis
5264014 daylily rust Puccinia hemerocallidis
5264015 daylily rust Puccinia hemerocallidis
5264016 daylily rust Puccinia hemerocallidis
5264017 daylily rust Puccinia hemerocallidis
5264018 daylily rust Puccinia hemerocallidis
5264019 daylily rust Puccinia hemerocallidis
5264022 daylily rust Puccinia hemerocallidis
5264023 daylily rust Puccinia hemerocallidis
5264024 daylily rust Puccinia hemerocallidis
5264025 daylily rust Puccinia hemerocallidis
5264026 daylily rust Puccinia hemerocallidis
5264027 daylily rust Puccinia hemerocallidis
5264028 daylily rust Puccinia hemerocallidis
5264029 daylily rust Puccinia hemerocallidis
5264030 daylily rust Puccinia hemerocallidis
5264031 daylily rust Puccinia hemerocallidis
5264032 daylily rust Puccinia hemerocallidis
5264033 daylily rust Puccinia hemerocallidis
5264034 daylily rust Puccinia hemerocallidis
5264035 daylily rust Puccinia hemerocallidis
5264036 daylily rust Puccinia hemerocallidis
5264037 daylily rust Puccinia hemerocallidis
5263076 daylily rust Puccinia hemerocallidis
5263077 daylily rust Puccinia hemerocallidis
5263078 daylily rust Puccinia hemerocallidis
5263079 daylily rust Puccinia hemerocallidis
5263080 daylily rust Puccinia hemerocallidis
5263081 daylily rust Puccinia hemerocallidis
5263082 daylily rust Puccinia hemerocallidis
5263083 daylily rust Puccinia hemerocallidis
5263084 daylily rust Puccinia hemerocallidis
5267098 guava rust Puccinia psidii
5267099 guava rust Puccinia psidii
5267100 guava rust Puccinia psidii
5267094 guava rust Puccinia psidii
5267095 guava rust Puccinia psidii
5267096 guava rust Puccinia psidii
5267091 guava rust Puccinia psidii
5267092 guava rust Puccinia psidii
5268002 guava rust Puccinia psidii
5268003 guava rust Puccinia psidii
5263069 daylily rust Puccinia hemerocallidis
5263070 daylily rust Puccinia hemerocallidis
5263071 daylily rust Puccinia hemerocallidis
5263072 daylily rust Puccinia hemerocallidis
5263073 daylily rust Puccinia hemerocallidis
5263074 daylily rust Puccinia hemerocallidis
5263075 daylily rust Puccinia hemerocallidis
5263055 daylily rust Puccinia hemerocallidis
5263056 daylily rust Puccinia hemerocallidis
5263057 daylily rust Puccinia hemerocallidis
5263058 daylily rust Puccinia hemerocallidis
5263059 daylily rust Puccinia hemerocallidis
5263060 daylily rust Puccinia hemerocallidis
5263061 daylily rust Puccinia hemerocallidis
5263062 daylily rust Puccinia hemerocallidis
5263063 daylily rust Puccinia hemerocallidis
5263065 daylily rust Puccinia hemerocallidis
5263066 daylily rust Puccinia hemerocallidis
5260093 soybean rust Phakopsora pachyrhizi Phakopsora pachyrhiza, soybean rust of lower surf. of soybean leaf, Taiwan, 1973
5260095 soybean rust Phakopsora pachyrhizi Phakopsora pachyrhiza, Soybean rust, lower surface of leaf, Taiwan 1973
5263037 daylily rust Puccinia hemerocallidis
5263038 daylily rust Puccinia hemerocallidis
5263039 daylily rust Puccinia hemerocallidis
5263040 daylily rust Puccinia hemerocallidis
5263041 daylily rust Puccinia hemerocallidis
5263042 daylily rust Puccinia hemerocallidis
5263043 daylily rust Puccinia hemerocallidis
5263044 daylily rust Puccinia hemerocallidis
5263045 daylily rust Puccinia hemerocallidis
5263046 daylily rust Puccinia hemerocallidis
5263047 daylily rust Puccinia hemerocallidis
5263048 daylily rust Puccinia hemerocallidis
5263049 daylily rust Puccinia hemerocallidis
5263050 daylily rust Puccinia hemerocallidis
5263051 daylily rust Puccinia hemerocallidis
5263052 daylily rust Puccinia hemerocallidis
5263053 daylily rust Puccinia hemerocallidis
5263054 daylily rust Puccinia hemerocallidis
5222072 American hawthorn rust Gymnosporangium globosum
5222074 cedar-apple rust Gymnosporangium juniperi-virginianae
5222075 cedar-apple rust Gymnosporangium juniperi-virginianae
5222076 cedar-apple rust Gymnosporangium juniperi-virginianae
5222077 cedar-apple rust Gymnosporangium juniperi-virginianae
5222078 cedar-apple rust Gymnosporangium juniperi-virginianae gall with telial horns extruded in wet weather
5222079 cedar-apple rust Gymnosporangium juniperi-virginianae gall with telial horns extruded in wet weather
5222080 cedar-apple rust Gymnosporangium juniperi-virginianae
5257033 soybean rust Phakopsora pachyrhizi
5265042 cedar-apple rust Gymnosporangium juniperi-virginianae telial horns
5265027 chrysanthemum white rust Puccinia horiana October 1977
5265024 chrysanthemum white rust Puccinia horiana
5265025 chrysanthemum white rust Puccinia horiana
5265026 chrysanthemum white rust Puccinia horiana
5265028 chrysanthemum white rust Puccinia horiana telium; October 1977
5265029 chrysanthemum white rust Puccinia horiana
5265030 chrysanthemum white rust Puccinia horiana telia on leaf
5268040 daylily rust Puccinia hemerocallidis telia and teliaspores
5268041 daylily rust Puccinia hemerocallidis telia and teliaspores
5268042 daylily rust Puccinia hemerocallidis telia and teliaspores
5268043 daylily rust Puccinia hemerocallidis telia and teliaspores
5268044 daylily rust Puccinia hemerocallidis telia and teliaspores
5268045 daylily rust Puccinia hemerocallidis telia and teliaspores
5268046 daylily rust Puccinia hemerocallidis telia and teliaspores
5268048 daylily rust Puccinia hemerocallidis uredospores
5268049 daylily rust Puccinia hemerocallidis uredospores
5268050 daylily rust Puccinia hemerocallidis uredospores
5268051 daylily rust Puccinia hemerocallidis uredospores
5268052 daylily rust Puccinia hemerocallidis uredospores
5268053 daylily rust Puccinia hemerocallidis uredospores
5268054 daylily rust Puccinia hemerocallidis uredospores
5268055 daylily rust Puccinia hemerocallidis uredospores
5268056 daylily rust Puccinia hemerocallidis uredospores
5268057 daylily rust Puccinia hemerocallidis uredospores
1520104 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust in a nursery bed
1509092 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust
1509089 white pine blister rust Cronartium ribicola White pine blister rust symptoms
1501087 white pine blister rust Cronartium ribicola White pine blister rust
1501088 white pine blister rust Cronartium ribicola White pine blister rust
1501090 white pine blister rust Cronartium ribicola White pine blister rust
1501093 white pine blister rust Cronartium ribicola White pine blister rust
1503021 pine needle rusts Coleosporium spp. Needle rust; Coleosporium sp.; loblolly pine
1503022 pine needle rusts Coleosporium spp. Needle rust; Coleosporium sp.; loblolly pine; aecia
1501086 white pine blister rust Cronartium ribicola White pine blister rust; Ribes
1501091 white pine blister rust Cronartium ribicola White pine blister rust
1502031 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; fruiting aecial stage - lob pine
1501103 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust infected seedlings
1502008 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; tree breakage at canker
1502009 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; stand showing many cankers
1502011 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; stand showing many cankers
1502012 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; stand showing many cankers
1502013 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; branch gall
1502014 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; aecial fruiting on stem gall
1502015 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; aecial fruiting on stem gall
1502016 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; stem gall
1502020 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; stem gall causing "cabbage"
1502023 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; stem gall
1502024 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; stem gall
1502025 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; stem gall
1502027 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; stem gall
1502028 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; fruiting aecial stage
1502029 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; fruiting aecial stage
1502030 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; fruiting aecial stage
1502032 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; fruiting branch canker (aecia)
1502033 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; fruiting aecial stage
1502034 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; fruiting aecial stage
1502035 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; fruiting aecial stage
1502036 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; fruiting aecial stage
1503052 southern cone rust Cronartium strobilinum Cone rust; slash pine
1503053 southern cone rust Cronartium strobilinum Cone rust; slash pine; North Lake City
1503054 southern cone rust Cronartium strobilinum Cone rust; slash pine; Cronartium strobilinum
1501096 eastern pine gall rust Cronartium quercuum Eastern gall rust; Va. Pine
1501094 eastern pine gall rust Cronartium quercuum Eastern gall rust
1501101 comandra blister rust Cronartium comandrae Comandra blister rust; shortleaf pine; Buffalo Road
1501102 comandra blister rust Cronartium comandrae Comandra blister rust - fusiform rust comparison
1501099 comandra blister rust Cronartium comandrae Comandra blister rust; loblolly pine
1501084 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar apple rust
1501081 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar apple rust gall; E. red cedar
5030002 western gall rust Endocronartium harknessii Single gall on jack pine
5030003 western gall rust Endocronartium harknessii Sporulating gall
5030004 western gall rust Endocronartium harknessii Sporulating gall
5030005 western gall rust Endocronartium harknessii Non-sporulating gall
5030006 western gall rust Endocronartium harknessii Sporulating gall, almost girdling a sapling
5030007 western gall rust Endocronartium harknessii Multiple galls
5030008 western gall rust Endocronartium harknessii Multiple galls
5030009 western gall rust Endocronartium harknessii Sporulating gall
5030010 western gall rust Endocronartium harknessii Sporulating gall
5030011 western gall rust Endocronartium harknessii
5030012 western gall rust Endocronartium harknessii Small gall
5030013 western gall rust Endocronartium harknessii Single gall on jack pine branch.
5028062 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028063 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028064 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028065 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028066 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028058 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028059 cedar-apple rust Gymnosporangium juniperi-virginianae Telial horns of the cedar-apple rust pathogen.
5028060 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028061 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5162070 guava rust Puccinia psidii on young leaves
5162071 guava rust Puccinia psidii with Puccinia psidii rust on young leaves
5162072 guava rust Puccinia psidii with Puccinia psidii rust on young leaves
5154034 oat stem rust Puccinia graminis f.sp. avenae uredinia releasing urediniospores on oat stem; note: edges of pustules become tattered as spores are released
5154035 oat crown rust Puccinia coronata var. avenae uredinia releasing urediniospores on oat leaf
5154036 wheat leaf rust Puccinia recondita uredinia releasing urediniospores on wheat leaf
3036020 white pine blister rust Cronartium ribicola canker on main stem, VA
3036011 white pine blister rust Cronartium ribicola Aecial stage on branch
3035055 spruce needle rusts Chrysomyxa spp.
3036003 pine needle rusts Coleosporium spp. Aecial pustules of a needle rust on pine needles, MN
3035100 pine needle rust Coleosporium asterum Aecial pustules of a needle rust on pine needles, MN
3036010 white pine blister rust Cronartium ribicola ribes
3035085 white pine blister rust Cronartium ribicola test outplantings of white pine, Dorena OR
3035083 comandra blister rust Cronartium comandrae Aecia of comandra rust on pine stem and brach
3036002 comandra blister rust Cronartium comandrae Aecial pustules on commandra rust on pine branch
3036005 western gall rust Endocronartium harknessii 5 yr old scots pine
1501105 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; point of infection; Greenhouse
1501107 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; telia on oak leaf; Greenhouse
1501108 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; telia on oak leaf; Greenhouse
1501109 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; telia on oak leaf; Greenhouse
1502002 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; Pyvnial ooze; greenhouse
1502003 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; pycnial ooze; greenhouse
1502004 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; pycnial ooze; greenhouse
1502005 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; pycnial ooze; greenhouse
3035082 eastern pine gall rust Cronartium quercuum
3036006 eastern pine gall rust Cronartium quercuum Aecial stage of eastern gall rust on pine, VA
3036017 eastern pine gall rust Cronartium quercuum Pycnial ooze on stem of pine
1501110 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; telia on oak leaf; Greenhouse
1501111 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; uredia on oak leaf; greenhouse
1502001 fusiform rust Cronartium quercuum f.sp. fusiforme Fusiform rust; uredia on oak leaf; greenhouse
3036015 fusiform rust Cronartium quercuum f.sp. fusiforme fruiting gall on stem
1501106 juniper witches' broom rust Gymnosporangium nidus avis Fusiform rust; telia culture on oak leaves; Greenhouse
3035094 American hawthorn rust Gymnosporangium globosum Cedar hawthorne rust
3036004 American hawthorn rust Gymnosporangium globosum cedar-hawthorn rust
3035088 poplar rust Melampsora medusae Uredia of poplar rust on underside of cottonwood
3036012 poplar rust Melampsora medusae rust on cottonwood
4214090 eastern pine gall rust Cronartium quercuum gall
1319006 wheat stripe rust Puccinia striiformis var. striiformis A severe barley stripe rust infection can dehydrate plants and ruin the barley crop.
1317077 safflower rust Puccinia calcitrapae var. centaureae Early symptoms of safflower rust, a disease native to the United States, appear on th estem of a safflower seedling.
5021076 hemlock needle rust Pucciniastrum vaccinii
5076074 dry bean rust Uromyces appendiculatus Small, red to brown spots that coalesce, eventually covering a large portion of the leaf. Plant may defoliate.
5037034 western gall rust Endocronartium harknessii
5032048 white pine blister rust Cronartium ribicola rust cankers
5032051 white pine blister rust Cronartium ribicola
5032052 white pine blister rust Cronartium ribicola
5032062 white pine blister rust Cronartium ribicola copious resin flow
5032064 white pine blister rust Cronartium ribicola small branch infection
5032065 white pine blister rust Cronartium ribicola telia on Ribes sp.
5047035 white pine blister rust Cronartium ribicola aecia
5047036 white pine blister rust Cronartium ribicola aecia
5047037 white pine blister rust Cronartium ribicola canker
5061027 white pine blister rust Cronartium ribicola
5061029 white pine blister rust Cronartium ribicola
5061030 white pine blister rust Cronartium ribicola
5061031 white pine blister rust Cronartium ribicola
5061032 white pine blister rust Cronartium ribicola
5061033 white pine blister rust Cronartium ribicola
5061036 white pine blister rust Cronartium ribicola
5061038 white pine blister rust Cronartium ribicola
5061041 white pine blister rust Cronartium ribicola
5061042 white pine blister rust Cronartium ribicola
5061043 white pine blister rust Cronartium ribicola
5061044 white pine blister rust Cronartium ribicola
5061046 white pine blister rust Cronartium ribicola
5061047 white pine blister rust Cronartium ribicola
5061048 white pine blister rust Cronartium ribicola
5061052 white pine blister rust Cronartium ribicola
5061053 white pine blister rust Cronartium ribicola
5061054 white pine blister rust Cronartium ribicola
5061055 white pine blister rust Cronartium ribicola on alternate host
5061056 white pine blister rust Cronartium ribicola on alternate host
5061057 white pine blister rust Cronartium ribicola on alternate host
5061058 white pine blister rust Cronartium ribicola on alternate host
5061059 white pine blister rust Cronartium ribicola on alternate host
5061063 white pine blister rust Cronartium ribicola
5061064 white pine blister rust Cronartium ribicola
5061066 white pine blister rust Cronartium ribicola
5061067 white pine blister rust Cronartium ribicola
5061070 white pine blister rust Cronartium ribicola
5061071 white pine blister rust Cronartium ribicola
5061075 white pine blister rust Cronartium ribicola cankers
5061077 white pine blister rust Cronartium ribicola rust cankers
5061078 white pine blister rust Cronartium ribicola
5061079 white pine blister rust Cronartium ribicola rust cankers
5061080 white pine blister rust Cronartium ribicola rust cankers
5061081 white pine blister rust Cronartium ribicola rust canker
5061083 white pine blister rust Cronartium ribicola
5061084 white pine blister rust Cronartium ribicola
5061086 white pine blister rust Cronartium ribicola and porcupine damage
5076081 puccinia rusts Puccinia spp. Small, slender, brown to black spots that run with the leaf vein. May cover the entire leaf.
5050010 comandra blister rust Cronartium comandrae
5050007 comandra blister rust Cronartium comandrae
5050008 comandra blister rust Cronartium comandrae
5050009 comandra blister rust Cronartium comandrae
5043055 cedar-apple rust Gymnosporangium juniperi-virginianae
5043056 cedar-apple rust Gymnosporangium juniperi-virginianae
5043057 cedar-apple rust Gymnosporangium juniperi-virginianae
5043058 cedar-apple rust Gymnosporangium juniperi-virginianae close up of fruiting body
5043059 cedar-apple rust Gymnosporangium juniperi-virginianae
5043063 cedar-apple rust Gymnosporangium juniperi-virginianae telia
5043064 cedar-apple rust Gymnosporangium juniperi-virginianae telia
5043065 cedar-apple rust Gymnosporangium juniperi-virginianae telia
5043066 cedar-apple rust Gymnosporangium juniperi-virginianae
5043067 cedar-apple rust Gymnosporangium juniperi-virginianae
5043068 cedar-apple rust Gymnosporangium juniperi-virginianae
5043069 cedar-apple rust Gymnosporangium juniperi-virginianae
5043070 cedar-apple rust Gymnosporangium juniperi-virginianae
5043071 cedar-apple rust Gymnosporangium juniperi-virginianae
5043072 cedar-apple rust Gymnosporangium juniperi-virginianae telia
5043073 cedar-apple rust Gymnosporangium juniperi-virginianae telia
5043074 cedar-apple rust Gymnosporangium juniperi-virginianae telia
5043075 cedar-apple rust Gymnosporangium juniperi-virginianae telia
5043076 cedar-apple rust Gymnosporangium juniperi-virginianae
5043077 cedar-apple rust Gymnosporangium juniperi-virginianae
5043078 cedar-apple rust Gymnosporangium juniperi-virginianae telia
5043079 cedar-apple rust Gymnosporangium juniperi-virginianae telia
5043080 cedar-apple rust Gymnosporangium juniperi-virginianae telia
5043081 cedar-apple rust Gymnosporangium juniperi-virginianae telia
5027015 rose rust Phragmidium mucronatum
5027016 rose rust Phragmidium mucronatum
5043060 cedar-apple rust Gymnosporangium juniperi-virginianae close up of spore tubes
5043061 cedar-apple rust Gymnosporangium juniperi-virginianae
5043062 cedar-apple rust Gymnosporangium juniperi-virginianae
3227010 Cronartium gall rusts Cronartium spp. aecial spores
2170003 onion rust Puccinia allii spores
2170004 onion rust Puccinia allii spores
2169090 onion rust Puccinia allii spores
2139068 Melampsora rusts Melampsora spp.
1241731 limb rust Peridermium filamentosum Typical limb rust crown symptoms.
2139072 pinyon blister rust Cronartium occidentale
2139073 pinyon blister rust Cronartium occidentale
2139075 stalactiform blister rust Cronartium coleosporioides canker
1467268 western gall rust Endocronartium harknessii aecia
1467308 comandra blister rust Cronartium comandrae germinating aeciospore
1467306 comandra blister rust Cronartium comandrae infection on alternate host; note blue rhizomes
1467307 comandra blister rust Cronartium comandrae telia
1467301 comandra blister rust Cronartium comandrae aecia formed on canker
1467299 comandra blister rust Cronartium comandrae
1467302 comandra blister rust Cronartium comandrae aecia on canker
1467304 comandra blister rust Cronartium comandrae
1467310 pinyon blister rust Cronartium occidentale telia
1467413 white pine blister rust Cronartium ribicola aeciospores; usually produced on cankers at least 2 years old; May 1976
1467257 white pine blister rust Cronartium ribicola uredia on underside of leaves
1467258 white pine blister rust Cronartium ribicola telia on underside of leaves
1467256 white pine blister rust Cronartium ribicola
1467259 white pine blister rust Cronartium ribicola telial columns
1467416 white pine blister rust Cronartium ribicola telial horns
1467414 white pine blister rust Cronartium ribicola alternate host
1467271 western gall rust Endocronartium harknessii germinating aeciospores
1467252 white pine blister rust Cronartium ribicola aecia
1467419 white pine blister rust Cronartium ribicola basidiospore germinating in stomata; 40x with flourescence
1467420 white pine blister rust Cronartium ribicola pseudosclerotium; 38um microtome section; red spot color bleached by water
1467421 white pine blister rust Cronartium ribicola red-green-island race; pseudosclerotium spot
1467422 white pine blister rust Cronartium ribicola red spot race; pseudosclerotium spot
1467424 white pine blister rust Cronartium ribicola yellow spot race; pseudosclerotium spot
1467425 white pine blister rust Cronartium ribicola yellow-green-island race; pseudosclerotium spot
1467426 white pine blister rust Cronartium ribicola incipient canker
1467427 white pine blister rust Cronartium ribicola pycniospores produced 6 months to 3 years later
1467428 white pine blister rust Cronartium ribicola girdling caused by canker
1467429 white pine blister rust Cronartium ribicola phenotypically resistant trees selected from areas of high rust incidence
1467430 white pine blister rust Cronartium ribicola pollen to be collected from phenotypically resistant trees in areas of high rust incidence
1467431 white pine blister rust Cronartium ribicola pollen to be collected from phenotypically resistant trees in areas of high rust incidence
1467432 white pine blister rust Cronartium ribicola female strobili; pollen from male flowers collected from phenotypically resistant trees in areas of high rust incidence for pollenation
1467433 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; bags applied to prevent insect damage
1467434 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; bags applied to prevent insect damage
1467435 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; bags applied to prevent insect damage
1467436 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; bags applied to prevent insect damage
1467437 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; bags applied to prevent insect damage
1467438 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; cones collected and placed in greenhouse to dry
1467439 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; seeds from collected cones planted for progeny testing
1467440 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; seeds from collected cones planted for progeny testing; tents constructed for artificial inoculation
1467441 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; seeds from collected cones planted for progeny testing; tents used for artificial inoculation; infected wild Ribes spp. leaves placed over seedlings
1467442 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; seeds from collected cones planted for progeny testing; tents used for artificial inoculation; infected wild Ribes spp. leaves placed over seedlings; 100% relative humidity fo 4 days
1467443 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; seeds from collected cones planted for progeny testing; tents used for artificial inoculation; infected wild Ribes spp. leaves placed over seedlings; 100% relative humidity for 4 days
1467444 white pine blister rust Cronartium ribicola pollen collected from phenotypically resistant trees in areas of high rust incidence; seeds from collected cones planted for progeny testing; tents used for artificial inoculation; infected wild Ribes spp. leaves placed over seedlings; inspection for infections
1467447 white pine blister rust Cronartium ribicola premature shedding of infected needles
1467448 white pine blister rust Cronartium ribicola slow fungus growth and tolerance; basal canker - 20-year-old canker on 21-year-old tree
1467449 white pine blister rust Cronartium ribicola commercial production of resistant seed in Moscow breeding arboretum
1467450 white pine blister rust Cronartium ribicola high mortality
1467451 white pine blister rust Cronartium ribicola after heavy mortality; ready for regeneration of naturally selected seedlings
1467274 limb rust Peridermium filamentosum aecial stage
1467291 fir broom rust Melampsorella caryophyllacearum
1467292 fir broom rust Melampsorella caryophyllacearum
1467294 fir broom rust Melampsorella caryophyllacearum alternate host
1467263 needle rust Pucciniastrum goeppertianum aecia on white fir needles
1241721 western gall rust Endocronartium harknessii Branch gall as they normally appear.
1241723 western gall rust Endocronartium harknessii Stem ("hip") canker caused by western gall rust.
1241722 western gall rust Endocronartium harknessii Branch gall sporulating.
1470129 sweet fern blister rust Cronartium comptoniae
0019032 gladiolus rust Uromyces transversalis Rust form underside of leaf
1457019 white pine blister rust Cronartium ribicola Aecial spore stage of white pine blister rust on main stem of a small tree.
1399113 Melampsora leaf rust Melampsora laricis-populina uredospores on hybrid poplar
1396158 cedar-apple rust Gymnosporangium juniperi-virginianae
1400125 cedar-apple rust Gymnosporangium juniperi-virginianae Telial horns from galls on cedar, following moist spring weather in southeast Minnesota.
1406132 sweet fern blister rust Cronartium comptoniae
1406009 pine needle rust Coleosporium asterum uredia growing on alternate host
1406010 pine needle rust Coleosporium asterum telia growing on alternate host
1388001 white pine blister rust Cronartium ribicola Pathological pruning. Northern Minnesota
1198029 eastern pine gall rust Cronartium quercuum Indistinguishable from western gall rust (pine-pine rust, Endocronartium harknessii) without microscopic examination of spore germination.
1271005 white pine blister rust Cronartium ribicola Aecia on bole/truck. Mount Hood National Forest. Northern Oregon Cascades.
1247085 fusiform rust Cronartium quercuum f.sp. fusiforme Branch canker
1247221 fusiform rust Cronartium quercuum f.sp. fusiforme Aeciospores
1247151 cedar-apple rust Gymnosporangium juniperi-virginianae
1247219 cedar-apple rust Gymnosporangium juniperi-virginianae
1361150 cedar-apple rust Gymnosporangium juniperi-virginianae Orange, gelatinous finger-like masses of spores
1361151 cedar-apple rust Gymnosporangium juniperi-virginianae Tongue-like spore masses on the branch swellings
1361148 fusiform rust Cronartium quercuum f.sp. fusiforme
1254071 Gynosporanium rusts Gymnosporangium spp.
1254070 Gynosporanium rusts Gymnosporangium spp. Fort Collins, CO.
1301050 white pine blister rust Cronartium ribicola Ueredinial stage.
1501098 comandra blister rust Cronartium comandrae
1241728 comandra blister rust Cronartium comandrae Comandra blister rust sporulation causing rough bark.
1241716 white pine blister rust Cronartium ribicola Basal canker.
1241719 white pine blister rust Cronartium ribicola Spindle-shaped swelling is an early indication of branch infections. This infection is also sporulating.
1241720 white pine blister rust Cronartium ribicola Spores are produced within the blisters.
1241715 white pine blister rust Cronartium ribicola Rust sporulating on the bole of an infected tree.
1241580 fir needle rusts Pucciniastrum spp. Fir needle rusts fruit on 1-yr old needles.
1241582 fir needle rusts Pucciniastrum spp. Yellow-white columns of aecial pustules are produced on the undersides of needles.
1241581 fir needle rusts Pucciniastrum spp. Yellow-white columns of aecial pustules are produced on the undersides of needles.
1241502 spruce broom rust Chrysomyxa arctostaphyli
1234146 cedar-apple rust Gymnosporangium juniperi-virginianae
1233236 puccinia rusts Puccinia spp.
1460053 chrysanthemum white rust Puccinia horiana found in Long Island, New York on October 17, 2002
1460054 chrysanthemum white rust Puccinia horiana at nursery in Long Island, New York where rust was found on October 17, 2002
1460044 chrysanthemum white rust Puccinia horiana found in Long Island, New York on October 17, 2002
1171042 white pine blister rust Cronartium ribicola Blister rust flagging branch
1210058 western gall rust Endocronartium harknessii
1428104 Gynosporanium rusts Gymnosporangium spp. Telial stage
0355056 fusiform rust Cronartium quercuum f.sp. fusiforme branch gall
1442119 fusiform rust Cronartium quercuum f.sp. fusiforme sporulating
1442144 Melampsora rusts Melampsora spp. urediospores @500x
1442056 fir broom rust Melampsorella caryophyllacearum
1442039 comandra blister rust Cronartium comandrae
1442046 western gall rust Endocronartium harknessii
1442042 white pine blister rust Cronartium ribicola
1436135 eastern pine gall rust Cronartium quercuum
1404038 fusiform rust Cronartium quercuum f.sp. fusiforme Stem cankers ignited by the high flame heights of strip heading fires. Bainbridge, Georgia
1436026 puccinia rusts Puccinia spp.
1429044 fusiform rust Cronartium quercuum f.sp. fusiforme rust screening test
0019033 chrysanthemum white rust Puccinia horiana white colored pustule
0019035 chrysanthemum white rust Puccinia horiana white rust pustule
0355057 fusiform rust Cronartium quercuum f.sp. fusiforme closeup view of telia
2251002 western gall rust Endocronartium harknessii gall on young pine
0580006 puccinia rust Puccinia carduorum infested thistle leaf
0580007 puccinia rust Puccinia carduorum close up of infection
0580008 puccinia rust Puccinia carduorum urendiniospores and teliospores
3035087 fusiform rust Cronartium quercuum f.sp. fusiforme uredial stage
3036008 fusiform rust Cronartium quercuum f.sp. fusiforme
3036013 fusiform rust Cronartium quercuum f.sp. fusiforme
2733024 fusiform rust Cronartium quercuum f.sp. fusiforme on bareroot nursery seedlings
3035081 fusiform rust Cronartium quercuum f.sp. fusiforme
3035089 fusiform rust Cronartium quercuum f.sp. fusiforme
4823044 southern cone rust Cronartium strobilinum Infected first-year conelets swell rapidly by April and are often three to four times larger than disease-free cones. Infected conelet - left, normal conelet - right.
4823045 southern cone rust Cronartium strobilinum Infected first-year conelets swell rapidly by April and are often three to four times larger than disease-free cones. Note bright yellow aeciospores forming on the large infected cone on the right.
4823046 southern cone rust Cronartium strobilinum Infected swollen first year cone displaying powdery masses of yellow-orange aeciospores
4823047 southern cone rust Cronartium strobilinum Swollen infected first year cones with yellow-orange masses of aeciospores
4823048 southern cone rust Cronartium strobilinum infected cone with yellow-orange aeciospore masses (top) and normal green cone (bottom)
4824066 fusiform rust Cronartium quercuum f.sp. fusiforme Galls at seedling root-collar.
4823040 quince rust Gymnosporangium clavipes
4823041 quince rust Gymnosporangium clavipes Telia sporulation.
4823042 juniper witches' broom rust Gymnosporangium nidus avis Swelling and telia sporulation on infected branch.
4822062 ash rusts Puccinia sparganioides Leaf distortion, petiole hypertrophy and distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue.
4822065 ash rusts Puccinia sparganioides Closeup of distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue.
4823039 cedar-apple rust Gymnosporangium juniperi-virginianae Inactive reddish-brown/dark brown second-year galls. Telia horns will develop during moist conditions in spring and early summer see image 4823038).
0805068 spruce broom rust Chrysomyxa arctostaphyli on spruce
4213038 white pine blister rust Cronartium ribicola larger tree with stem canker showing characteristic pitch
4213039 white pine blister rust Cronartium ribicola upper half of tree is dead
4213036 white pine blister rust Cronartium ribicola aecia
4212087 cedar-apple rust Gymnosporangium juniperi-virginianae pycnial spots on apple leaves
2251003 western gall rust Endocronartium harknessii cankers
2251005 western gall rust Endocronartium harknessii branch gall
2251011 stalactiform blister rust Cronartium coleosporioides cross-section of canker
2251006 stalactiform blister rust Cronartium coleosporioides alternate pedicularis host
2251007 stalactiform blister rust Cronartium coleosporioides aecia
2251008 stalactiform blister rust Cronartium coleosporioides telia on alternate Castilleja host
2251009 stalactiform blister rust Cronartium coleosporioides Castelloia alternate host
2251096 poplar rust Melampsora medusae
3227009 Cronartium gall rusts Cronartium spp. aecial stage
4215022 eastern pine gall rust Cronartium quercuum pycnia
4215018 limb rust Peridermium filamentosum current year's aecia and persistent
2250096 comandra blister rust Cronartium comandrae aecia
2250098 comandra blister rust Cronartium comandrae telia on comandra plant
2250097 pine needle rusts Coleosporium spp. mature aecia on needles
2250089 white pine blister rust Cronartium ribicola ribes/inocolum
2250091 white pine blister rust Cronartium ribicola aecia
2250092 white pine blister rust Cronartium ribicola aecia
2250093 white pine blister rust Cronartium ribicola aecia on white bark pine
0364063 white pine blister rust Cronartium ribicola Pycnia
0364064 white pine blister rust Cronartium ribicola Aecia
0355059 fusiform rust Cronartium quercuum f.sp. fusiforme tree broken by wind at canker
0355063 fusiform rust Cronartium quercuum f.sp. fusiforme pycnia
0355064 fusiform rust Cronartium quercuum f.sp. fusiforme uredinia on oak leaf
0355065 fusiform rust Cronartium quercuum f.sp. fusiforme close-up view of uredinia and telia
0355066 fusiform rust Cronartium quercuum f.sp. fusiforme Pycnia
0355068 fusiform rust Cronartium quercuum f.sp. fusiforme pycnia
0364005 fusiform rust Cronartium quercuum f.sp. fusiforme close-up view of telia on oak
0355027 fusiform rust Cronartium quercuum f.sp. fusiforme canker on loblolly pine

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