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Edward L. Barnard's Images

Title: Forest Pathologist
Organization: Florida Department of Agriculture and Consumer Services
Unit: Division of Forestry
Country: United States

301 Images of 72 Subjects View Subject List View Image Details View Thumbnails

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Image Subject Name Scientific Name Description
4824052 whitefringed beetles Naupactus spp. Sweep net survey - adults collected on agricultural fields planted to pines following peanut production.
4823066 Leptographium root disease Leptographium procerum Various insects feeding on roots vector infection. Resin-impregnated soil crusts form at feeding or boring sites. Xylem becomes resin "soaked".
4822053 mistletoes Phoradendron spp. clumps developing in tree crown
4823017 hispidus canker Inonotus hispidus Old dark colored conk at base of tree
4823094 annosum root disease Heterobasidion annosum Small bracket-like basidiomata (right of pen)at base of infected stump. Note brownish upper surfaces and white margins /undersurfaces.
4823097 annosum root disease Heterobasidion annosum Incipient resinosis with associated clump of resin-impregnated soil around infected root.
4823096 annosum root disease Heterobasidion annosum 3/4 of vascular tissue resin soaked (note discoloration).
4823033 brown spot needle blight of pine Mycosphaerella dearnessii needle lesions with linear black perithecial stromata developing in the necrotic areas
4823064 Rhizosphaera needle cast Rhizosphaera kalkhoffii Conidiomata emerging from stomatal pores of a necrotic needle.
4823023 frost and winter injury (general) resprouts on freeze-damaged stems
4825028 Neonectria canker Neonectria galligena rough bark at root collar.
4824059 charcoal rot Macrophomina phaseolina Wilting and discoloration of infected seedlings.
4824026 Diplodia tip blights Diplodia spp. D. pini causing branch flagging.
4824027 Diplodia tip blights Diplodia spp. D. pini causing a resinous stem canker
4823069 ectomycorrhizae Pisolithus tinctorius Sporocarp in bareroot nursery bed. Munson Forest Nursery, Florida USA
4823056 pine needle cast Lophodermella cerina Hysterothecia, small (1-2 mm), black elongated fruting bodies which produce ascospores, on necrotic needles. Also present are the smaller conidiomata.
4823034 brown spot needle blight of pine Mycosphaerella dearnessii Infected older foliage of grass stage seedling. New needles at top of plant are not yet infected.
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.
4823018 Inonotus heartrot Inonotus rickii Advanced wood decay. Note the distinct, narrow darkened zones of sound wood at the martgins of the decayed wood.
4823032 brown spot needle blight of pine Mycosphaerella dearnessii typical lesions
4822074 pine needle rusts Coleosporium spp. Yellow-orange fissures develop in late spring on infected needles.
4822076 pine needle rusts Coleosporium spp. Aeciospores which are wind dissminated from the pine needles to the alternate aster or goldenrod host
4822040 Dutch elm disease Ophiostoma ulmi Foliage wilting, flagging (yellow), defoliation, and crown dieback
4822075 pine needle rusts Coleosporium spp. Aecia on needles
4822090 Neonectria canker Neonectria galligena Red-orange spherical perithecia wich occur singly or in clusters in the fissured bark of infected stems
4822070 powdery mildew Microsphaera penicillata cleistothecium with white branched appendages which produce ascospores
4822058 pitch canker Fusarium subglutinans Mortality of upper main stem
4822031 Inonotus heartrot Inonotus rickii Cushion/pad-like structure (an apparent sporocarp initial) at branch stub. Note sap running from decay site
4824080 pitch canker Fusarium subglutinans Basal swelling at root collar.
4824090 pine tip blight Tip Blight caused by a variety of fungi: Fusarium spp., Lasiodiplodia (Diplodia) spp., Macrophomina phaseolina. Occurs when shoot tips are succlent and rapidly growing. "Blighted" seedlings often recover.
4824077 Fusarium wilts, blights, rots and damping-off Fusarium spp. Affects lateral (feeder) and tap roots. Tap root may exhibit varying degrees of resin soaking.
4824070 brown spot needle blight of pine Mycosphaerella dearnessii Multiple infection spots spreading across nursery beds.
4824032 pitch canker Fusarium subglutinans Dieback of infected seedling.
4824014 Cylindrocladium root diseases Cylindrocladium spp. Damaged seedlings infected with C. floridanum. Lack of aeration as foliage mats (or lays down) down causes disease to spread across tray.
4824019 longleaf pine Pinus palustris Beds after top clipping. Note clipped foliage in alleys.
4823100 red root and butt rot Inonotus circinatus A major pathogen of older (greater than 20 years) sand pines in both planted and natural stands. Decayed wood and roots exhibit reddish to red-brown discoloration and eventually a rot flecked with small elliptical white pockets.
4824001 red root and butt rot Inonotus circinatus A major pathogen of older (greater than 20 years) sand pines in both planted and natural stands. Decayed wood and roots exhibit reddish to red-brown discoloration and eventually a rot flecked with small elliptical white pockets.
4823092 annosum root disease Heterobasidion annosum Wind throw of infected trees.
4823090 annosum root disease Heterobasidion annosum Thinning crown of infected tree (center)
4823076 sand pine root disease Old growth tree kiled by Inonotus circinatus (Fr.) R.L. Gilbertson. One of the complex of fungi (I. circinatus, Phytophthora cinnamomi, Phaeolus schweinitzii, Verticicladiella procera, Armillariella tabescens, Heterobasidion annosum) that cause Sand Pine Root Disease.
4823074 sand pine root disease resin leaking from trunk caused by a complex of fungi (Inonotous circinatus, Phytophthora cinnamomi, Phaeolus schweinitzii, Verticicladiella procera, Armillariella tabescens, Heterobasidion annosum).
4823079 Phytophthora root rot Phytophthora cinnamomi Mortality in four year old plantation.
4823085 Phytophthora root rot Phytophthora cinnamomi Mortality of 2-0 bareroot stock in Munson Forest Nursery, Florida, USA.
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.
4823021 frost and winter injury (general) Christmas freeze in Florida USA
4823081 Phytophthora root rot Phytophthora cinnamomi Mortality of 2-0 stock in Munson Forest Nursery, Florida, USA
4822032 Inonotus heartrot Inonotus rickii Advanced wood decay in branch. Note the distinct, narrow darkened zones of sound wood at the margins of the decayed wood, and the dark mass of sterile hyphae at the branch stub.
4822085 Botryosphaeria canker Botryosphaeria dothidea crown thinning and dieback
4823071 sand pine root disease Resin leakage at base of tree. Caused by a complex of fungi (Inonotus circinatus, Phytophthora cinnamomi, Phaeolus schweinitzii, Verticicladiella procera, Armillariella tabescens, Heterobasidion annosum).
2733033 Dutch elm disease Ophiostoma ulmi Initial flagging (yellowing) of branches in crown.
4822057 pitch canker Fusarium subglutinans Mortality ("flagging") of terminal shoot
4822055 pitch canker Fusarium subglutinans Mortality ("flagging") of infected terminal/branch shoots in mature trees
4823002 Armillaria root rot Armillaria tabescens Infected trees on Jonathan Dickinson State Park, Florida USA
4824040 charcoal rot Macrophomina phaseolina Black microselerotia and orange pycnidia on xylem tissue of infected seedling.
4822099 Armillaria root rot Armillaria tabescens Mycelial felt on base of stem of India Rosewood
4823024 frost and winter injury (general) sprouting from damaged stems
4823001 Armillaria root rot Armillaria tabescens Dead trees at Jonathan Dickinson State Park, Florida USA
4823062 Rhizina root disease Rhizina undulata Following a recent wildfire.
4823058 Lophodermium needle casts Lophodermium spp. Healthy trees (left), severe infection (center), moderate infection (right).
4823014 Ganoderma root and butt rot Ganoderma lucidum Note ferns growing under trees. The trees provide shade for the commercial fern production but cultivation of the soil causes root damage and infection.
4823084 red root and butt rot Inonotus circinatus Old growth trees kiled by Inonotus circinatus (Fr.) R.L. Gilbertson. One of the complex of fungi (Inonotus circinatus, Phytophthora cinnamomi, Phaeolus schweinitzii, Verticicladiella procera, Armillariella tabescens, Heterobasidion annosum) that cause Sand Pine Root Disease.
4823015 red heart of pine Phellinus pini Sporophore on the stem of an old-growth tree. (see image ).
4823008 Ganoderma root and butt rot Ganoderma lucidum Shiny, mahogany-red bracket-like (non-stalked) conks. Note mechanical damage to trunk.
4823009 Ganoderma root and butt rot Ganoderma lucidum young (immature) sporophore. Note pure white cap and yellowish stalk.
4822086 Botryosphaeria canker Botryosphaeria dothidea advanced symptoms and damage.
4822078 Phytophthora basal canker Phytophthora palmivora Droplets of discolored sap exuding from infected bark tissues.
4822082 Phytophthora basal canker Phytophthora palmivora canker initially 30 inches off ground, 6 months later - 11 feet off ground as infection progresses into tree stem and scaffold branches
4823019 Inonotus heartrot Inonotus rickii Decayed wood in center exhibiting typical yellow-brown to white color and is seperated from sound wood by a distinct zone of dark-stained wood.
4823026 bacterial wetwood Enterobacter nimipressuralis Symptomatic discolored bark. A branch scar is the "source" of the slime flux.
4823010 Ganoderma root and butt rot Ganoderma lucidum Mature sporophore removed from infected stem. Note the white underside of the conk.
4822095 Armillaria root rot Armillaria tabescens Mycelial white felt on roots, water soaking, "s" zone line
4822100 orange hobnail canker Cryphonectria gyrosa Thinning crown in infected tree where roots are exposed at soil surface from traffic & maintenance. Lake Wales, Florida USA
4823004 Inonotus canker Inonotus ludovicianus Infected tree in Santa Rosa County Florida USA
4823025 frost and winter injury (general) bark fissure
4822051 bacterial leaf scorch Xylella fastidiosa healthy tree & trees infected with Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host.
4823075 sand pine root disease Old growth tree kiled by Inonotus circinatus (Fr.) R.L. Gilbertson. One of the complex of fungi (I. circinatus, Phytophthora cinnamomi, Phaeolus schweinitzii, Verticicladiella procera, Armillariella tabescens, Heterobasidion annosum) that cause Sand Pine Root Disease.
4822087 Botryosphaeria canker Botryosphaeria dothidea note the discoloration on vascular tissue, 3/4 dead. Only the light-colored section is alive.
4822084 Neonectria canker Neonectria galligena Red-orange perithecia occur singly or in clusters in the fissured bark tissue of infected trees
4822077 Phytophthora basal canker Phytophthora palmivora Basal canker (6 feet off the ground) with dark staining and discoloration of infected bark. Naples, Florida, USA
4824002 Phytophthora root rot Phytophthora cinnamomi Mortality in 13-year old stand.
4822083 Neonectria canker Neonectria galligena Burlike galls
4822030 Inonotus heartrot Inonotus rickii decay at branch stubs - note sap running
4822091 orange hobnail canker Cryphonectria gyrosa On roots exposed at soil surface and damaged from traffic, yard maintenance etc.
4823016 hispidus canker Inonotus hispidus Old and new fruiting conks and canker. As the pathogen invades and kills the cambium, conspicuous callus folds develop at the canker margins resulting in the characteristic elongate, swollen appearance of the canker.
4823006 Ganoderma root and butt rot Ganoderma lucidum base of tree with conk
4823005 Ganoderma root and butt rot Ganoderma lucidum thinning crown of infected tree
4823038 cedar-apple rust Gymnosporangium juniperi-virginianae Fresh telial horns produced on mature second-year galls during moist conditons in spring and early summer.
4822096 Armillaria root rot Armillaria tabescens Mycelial felt on roots
4822056 pitch canker Fusarium subglutinans Severe mortality ("flagging") of infected terminal/branch shoots in mature trees
4822001 eucalyptus canker Cryphonectria cubensis canker
4822088 Neonectria canker Neonectria galligena Distinctive "target-like" canker in stem
4824003 Phytophthora root rot Phytophthora cinnamomi Mortality in 4-year old stand
4822046 bacterial leaf scorch Xylella fastidiosa Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Symptoms characteristically develop from bottom of the tree upward and inside of crown outward. Older leaves will have a "scorched" curled appearance while younger leaves at branch tips will appear healthy.
4822021 Hypoxylon cankers Hypoxylon spp. ascocarps sexual stage
4822089 Neonectria canker Neonectria galligena Red-orange spherical perithecia wich occur singly or in clusters in the fissured bark of infected stems
4824028 Diplodia tip blights Diplodia spp. D. pini. Note resin soaked tissue beneath bark.
4823031 brown spot needle blight of pine Mycosphaerella dearnessii Typical brown spots on infected needles.
4823073 sand pine root disease Resin soaked wood caused by a complex of fungi (Inonotus circinatus, Phytophthora cinnamomi, Phaeolus schweinitzii, Verticicladiella procera, Armillariella tabescens, Heterobasidion annosum).
4823099 annosum root disease Heterobasidion annosum Crown symptoms: Dead trees (left), fading trees (right).
4825017 eucalyptus canker Cryphonectria cubensis Pycnidial stroma on bark surface.
4823098 annosum root disease Heterobasidion annosum White stringy rot ("shredded wheat") indicative of advanced infection.
4822045 bacterial leaf scorch Xylella fastidiosa Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Symptoms characteristically develop from bottom of the tree upward and inside of crown outward. Older leaves will have a "scorched" curled appearance while younger leaves at branch tips will appear healthy.
4823053 eastern pine gall rust Cronartium quercuum Spherical gall with yellow aecia spore sacs.
4823091 annosum root disease Heterobasidion annosum Stand mortality.
4825016 eucalyptus canker Cryphonectria cubensis Bark fissures on infected trunk.
4822048 bacterial leaf scorch Xylella fastidiosa Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Symptomatic tree with crown dieback, premature leaf abcission, chlorotic and "scorched" foliage.
4822049 bacterial leaf scorch Xylella fastidiosa Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Leaves developing "scorched" appearance.
4822097 Armillaria root rot Armillaria tabescens Mycelial felt on roots and water soaking of xylem tissue.
4822025 Hypoxylon cankers Hypoxylon spp. Black canker patches on stem
4822098 Armillaria root rot Armillaria tabescens Mycelial felt on roots and water soaking of xylem tissue.
4822047 bacterial leaf scorch Xylella fastidiosa Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Symptoms characteristically develop from bottom of the tree upward and inside of crown outward. Older leaves will have a "scorched" curled appearance while younger leaves at branch tips will appear healthy.
4823043 pitch canker Fusarium subglutinans "Flagging" of infected terminal
4822037 Inonotus heartrot Inonotus rickii Sap exudation and associated bark staining at infected branch stub.
4822038 Inonotus heartrot Inonotus rickii decay column in bole
4822041 Dutch elm disease Ophiostoma ulmi trees killed along road
4823057 Lophodermium needle casts Lophodermium spp. Severe infection.
4822080 Phytophthora basal canker Phytophthora palmivora Distinctive coffee-brown or dark rusty reddish-brown to black discoloration of bark.
4824094 southern blight Sclerotium rolfsii At base of foliage.
4824095 southern blight Sclerotium rolfsii Discolored foliage of infected seedlings.
4822079 Phytophthora basal canker Phytophthora palmivora zone line between infected vs. uninfected bark
4825024 Spanish moss Tillandsia usneoides A common epiphyte with hangs or drapes branches.
4824072 heat Groundline heat lesions on young seedlings occur from high groundline temperatures. Damaging groundline temperature is related to ambient air temperature, groundline insolation, soil moisture, and the color of the soil surface.
4825021 devil's gut Cassytha filiformis A parasitic vine which will penetrate into the stems of the host plant.
4824030 Caliciopsis canker Caliciopsis pinea Stem canker
4825025 small ballmoss Tillandsia recurvata An epiphyte which occurs in ball-like clusters.
4824076 Fusarium wilts, blights, rots and damping-off Fusarium spp. Affects lateral (feeder) and tap roots. Tap root may exhibit varying degrees of resin soaking.
4824038 charcoal rot Macrophomina phaseolina Late summer infection with seedlings exhibiting stunted growth, off-color foliage, wilting and/or redding foliage.
4822064 ash rusts Puccinia sparganioides distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue.
4823028 brown spot needle blight of pine Mycosphaerella dearnessii Grass stage seedling damaged by infection.
4822066 lichen Strigula smaragdula Green-orange algal spots or "green scruf" on leaf surface. The grayish-white and darker "crusts" are lichens of the genus Strigula resulting from fungal colonization of the alga.  Plant host is southern magnolia (Magnolia grandiflora L.).
4822042 Fusarium root rot and wilt Fusarium oxysporum Thinning crown of infected tree
4822043 Fusarium root rot and wilt Fusarium oxysporum Distinctive pale to dark brown (sometimes with a purplish hue)staining or discoloration of the xylem. This soil borne fungus enters the roots by direct penetration or through root wounds during transplanting/landscape maintance, or vectored by feeding injury caused by plant parastic nematodes. Once inside a susceptible host, the fungus enters the xylem and colonizes the vascular system restricting water flow.
4822035 Inonotus heartrot Inonotus rickii Stem cross sections showing advanced wood decay. Note the distinct, narrow darkened zones of sound wood at the margins of the decayed wood.
4822036 Inonotus heartrot Inonotus rickii longitudinal stem section showing advanced wood decay. Note the distinct, narrow darkened zones of sound wood at the margins of the decayed wood..
4822033 Inonotus heartrot Inonotus rickii Sap exudation ("bleeding")and associated bark staining at infected branch stub.
4822034 Inonotus heartrot Inonotus rickii Distinctive fructification of spores ("chain of spores").
4824043 whitefringed beetles Naupactus spp. Larva or grub which feeds on roots.
4825004 Cylindrocladium blight and root rot Cylindrocladium scoparium High humidity conditions and dense seedling spacing results in poor air movement and drying beneath seedling foliage which can increase chance of infection.
4825005 Cylindrocladium blight and root rot Cylindrocladium scoparium High humidity conditions and dense seedling spacing results in poor air movement and drying beneath seedling foliage which can increase chance of infection.on
4825002 Cylindrocladium blight and root rot Cylindrocladium scoparium High humidity conditions and dense seedling spacing results in poor air movement and drying beneath seedling foliage which can increase chance of infection.
1361156 hispidus canker Inonotus hispidus large canker
4825026 resurrection fern Pleopeltis polypodioides An epiphyte using tree branches for support.
4825027 Neonectria canker Neonectria galligena Hypertrophied bark in crown.
4825029 Neonectria canker Neonectria galligena Perithecia on bark.
4825030 Leptographium root disease Leptographium procerum Resin-soaking/staining root. Associated with insect injury
4825031 Leptographium root disease Leptographium procerum Relationship between fire intensity and colonization of pine roots by regeneration weevils and L. spp. infection.
4825032 devil's gut Cassytha filiformis A parasitic vine which penetrates into the stems of the host plant.
4825033 devil's gut Cassytha filiformis close-up vine
4825006 eucalyptus canker Cryphonectria cubensis Healthy stem, contrast to infected stem (image 4825007).
4825007 eucalyptus canker Cryphonectria cubensis Bark fissures starting at base of infected tree. Compare with healkthy stem (image 4825006). C. cubensis inhibits coppice ability of infected trees.
4825008 eucalyptus canker Cryphonectria cubensis Initial infection beneath bark.
4825009 eucalyptus canker Cryphonectria cubensis Advanced bark fissuring from infection which reduces coppice ability.
4825010 eucalyptus canker Cryphonectria cubensis Bark fissuring as canker develops which reduces coppice ability.
4825011 eucalyptus canker Cryphonectria cubensis Advanced canker development.
4825012 eucalyptus canker Cryphonectria cubensis Perithecia embedded in and protruding from bark removed from cankered tissues.
4825013 eucalyptus canker Cryphonectria cubensis Failure of 2-year old coppice shoots on infected stump.
4825014 eucalyptus canker Cryphonectria cubensis Infected stump with dying coppice shoots.
4825015 eucalyptus canker Cryphonectria cubensis Bark fissures on mature tree.
4825022 devil's gut Cassytha filiformis A parasitic vine which penetrates into the stem of the host plant.
4825023 lichen Foliose or leafy form (Parmelia spp.), and fruticose or shrubby form (Usnea spp.) on bark.
4825018 eucalyptus canker Cryphonectria cubensis Pycnidial stroma on bark.
4825019 Schweinitzii root and butt disease Phaeolus schweinitzii Sporophore from infected root (note yellow-brown to reddish brown decayed root tissue) of old-growth tree.
4825020 annosum root disease Heterobasidion annosum Conk - Smooth white to cream-colored lower surface (top), brown upper surface with enclosed pine needles (bottom).
4825003 heat Heat lesions girdling lower stem. Note swelling of stem above lesions resulting from obstructed flow of carbohydrates through damaged phloem.
4824078 pitch canker Fusarium subglutinans Symptomatic wilting of terminal of an infected seedling.
4824079 pitch canker Fusarium subglutinans Terminal wilting and dicoloration of infected seedlings.
4824091 pine tip blight Tip Blight caused by a variety of fungi: Fusarium spp., Lasiodiplodia (Diplodia) spp., Macrophomina phaseolina. Occurs when shoot tips are succlent and rapidly growing. "Blighted" seedlings often recover.
4824092 southern blight Sclerotium rolfsii Infected seedlings.
4824093 southern blight Sclerotium rolfsii Infected seedlings.
4824096 grand eucalyptus Eucalyptus grandis 8-year old in south Florida, USA.
4824097 lignotubers Food storage and regeneration organs appear as swellings at the base/root-collar of shoots. Lignotubers orginate from accessory meristematic tissue and/or buds in the axils of the cotyledons or the first few seedling leaves.
4824098 lignotubers Food storage and regeneration organs appear as swellings at the base/root-collar of shoots. Lignotubers orginate from accessory meristematic tissue and/or buds in the axils of the cotyledons or the first few seedling leaves.
4824099 Cylindrocladium blight and root rot Cylindrocladium scoparium Healthy seedlings (see image 4824100)
4824100 Cylindrocladium blight and root rot Cylindrocladium scoparium Girdling stem canker on infected seedlings. (see image 4824099).
4825001 Cylindrocladium blight and root rot Cylindrocladium scoparium Profuse conidial sporulation on severely infeced seedling stem.
4824073 heat Groundline heat lesion on a young seedling resulting from high groundline temperatures. Damaging groundline temperature is related to ambient air temperature, groundline insolation, soil moisture, and the color of the soil surface.
4824074 Botryosphaeria canker Botryosphaeria dothidea Infected seedlings with dark fruiting bodies on lower stem/root-collar (three seedlings on right), uninfected (three seedlings on left).
4824075 Botryosphaeria canker Botryosphaeria dothidea On surface of lower stem/root-collar.
4824041 whitefringed beetles Naupactus spp. Below ground larvae (grub) feeding damage.
4824042 whitefringed beetles Naupactus spp. Larva (grub) feeding on root.
4824071 heat Groundline heat lesions on young seedlings occur from high groundline temperatures. Damaging groundline temperature is related to ambient air temperature, groundline insolation, soil moisture, and the color of the soil surface.
4824081 pitch canker Fusarium subglutinans Resinosus of root/stem tissues of infected seedling.
4824082 Phytophthora root and crown rots Phytophthora spp. Infected roots growing in poorly drained nursery beds.
4824083 false tinder polypore Phellinus igniarius And Pythium root disease on seedlings grown in poorly drained nursery beds.
4824084 Cylindrocladium root diseases Cylindrocladium spp. Black microsclerotia fruiting bodies on the roots of infected seedlings.
4824085 Cylindrocladium root diseases Cylindrocladium spp. Black microsclerotia fruiting bodies on the roots of infected seedlings.
4824086 Pythium diseases Pythium spp. Scorched leaves of infected seedlings.
4824087 charcoal rot Macrophomina phaseolina Marginal leaf necrosis.
4824088 root-knot nematode Meloidogyne incognita Galls on roots of parasitized seedling.
4824089 pine tip blight Tip Blight caused by a variety of fungi: Fusarium spp., Lasiodiplodia (Diplodia) spp., Macrophomina phaseolina. Occurs when shoot tips are succlent and rapidly growing. "Blighted" seedlings often recover.
4824044 whitefringed beetles Naupactus spp. Scalping to remove a thin layer of thatch and topsoil to reduce larvae populations prior to planting.
4824045 whitefringed beetles Naupactus spp. Non-scalped check plot in Whitefinged beetle larvae control study. End of first growing season. Compare to image 4824046
4824046 whitefringed beetles Naupactus spp. Scalped plot in Whitefinged beetle larvae control study. End of first growing season. Compare to image 4824045
4824047 whitefringed beetles Naupactus spp. Scalped plot (center) with non-scalped check plots on each side in Whitefinged beetle larvae control study. End of first growing season. See images 4824045-46
4824048 whitefringed beetles Naupactus spp. Scalping prior to planting to reduce larvae populations.
4824049 whitefringed beetles Naupactus spp. Scalped plot (left), non-scalped check plot (right) in Whitefinged beetle larvae control study. In third growing season. See images 4824045-46
4824050 whitefringed beetles Naupactus spp. Scalped plot (left), non-scalped check plot (right)in Whitefinged beetle larvae control study. In third growing season.
4824051 whitefringed beetles Naupactus spp. Female. Larvae feed on seedling roots.
4824029 seedling blight of longleaf pine Ceratobasidium spp. Seedlings infected with a binucleate Rhizoctonia-like fungus. (Right to left) Asymptomatic, uninfected; early necrosis of needle bases and slight discoloration of terminal bud tissues; advanced necrosis of needle bases with developing bud necrosis; complete necrosis of terminal bud.
4824033 pitch canker Fusarium subglutinans Infected seedlings: (Right to left) basal swelling at root collar; clump of resin-soaked soil on root collar; resin-soaked root/stem lesion.
4824034 pitch canker Fusarium subglutinans Mortality in first year planted stand
4824035 pitch canker Fusarium subglutinans Roots of infected seedling caked with resin & sand. See image 4824036.
4824036 pitch canker Fusarium subglutinans Infected seedling with resin-soaked root xylem. See image 4824035.
4824037 pitch canker Fusarium subglutinans "Flagging" or dieback of terminal shoots of infected seedlings.
4824039 charcoal rot Macrophomina phaseolina Black microsclerotia on outer sufrace of root xylem tissue (top), and on inner surface of bark (bottom).
4824031 Caliciopsis canker Caliciopsis pinea Stem canker with bark removed.
4824053 charcoal rot Macrophomina phaseolina Infected seedlings in nursery bed.
4824054 charcoal rot Macrophomina phaseolina Wilting and reddening foliage of infected seedlings.
4824055 charcoal rot Macrophomina phaseolina Off-colered foliage of infected seedling.
4824056 charcoal rot Macrophomina phaseolina Subcortical microsclerotia on outer surface of xylem tissue beneather bark.
4824057 charcoal rot Macrophomina phaseolina Soil populations of M. phaseolina related to crop history.
4824058 charcoal rot Macrophomina phaseolina Soil populations of M. phaseolina following soybean cropping history.
4824060 seedling blight of longleaf pine Ceratobasidium spp. A Rhizoctonia solani-like binucleate fungus. Seedling mortality in infection center.
4824061 seedling blight of longleaf pine Ceratobasidium spp. A Rhizoctonia solani-like binucleate fungus. Seedling mortality in infection center.
4824062 Rhizoctonia damping-off, blight and rot Rhizoctonia solani Wilted and discolored infected seedlings.
4824063 seedling blight of longleaf pine Ceratobasidium spp. Seedlings infected with a binucleate Rhizoctonia-like fungus. (Right to left) Asymptomatic, uninfected; early necrosis of needle bases and slight discoloration of terminal bud tissues; advanced necrosis of needle bases with developing bud necrosis; complete necrosis of terminal bud.
4824064 Rhizoctonia damping-off, blight and rot Rhizoctonia solani Loss of lower foliage on infected seedlings.
4824065 Rhizoctonia damping-off, blight and rot Rhizoctonia solani Foliage discoloration and loss on infected seedling.
4824066 fusiform rust Cronartium quercuum f.sp. fusiforme Galls at seedling root-collar.
4824067 Phomopsis blight Phomopsis juniperivora Infected seedlings in nursery bed.
4824068 Phomopsis blight Phomopsis juniperivora Discolored foliage of infected seedlings.
4824069 brown spot needle blight of pine Mycosphaerella dearnessii Initial infection spot developing in nursery bed.
4823086 Phytophthora root rot Phytophthora cinnamomi Healthy tree (left), infected tree (right).
4823087 Phytophthora root rot Phytophthora cinnamomi Yellowing foliage of infected tree.
4823088 Phytophthora root rot Phytophthora cinnamomi 13-year old trees: Fading tree (left), dead tree (center), healthy treee (right).
4823089 Phytophthora root rot Phytophthora cinnamomi Resin soaked tissue.
4823093 annosum root disease Heterobasidion annosum Basidioma (beneath knife blade) at base of infected tree exposed by removal of duff/litter layer. Note irregular shape and whiteish undersurface.
4823095 annosum root disease Heterobasidion annosum Resin-soaked root xylem.
4824004 black senna Seymeria cassioides Growing near the base of a 6-year old pine, the yellow-flowered Senna attaches to and draws water and nutrients from the roots of the host pine.
4824005 black senna Seymeria cassioides A root parasite of southern pines
4824006 black senna Seymeria cassioides Closeup of foliage, flower buds and a single yellow flower. A root parasite of southern pine.
4824007 black senna Seymeria cassioides Seed capsules. Senna is a root parasite of southern pines.
4824008 black senna Seymeria cassioides Six-year old seedlings damaged in Washington County Florida. Note stunted growth, chlorotic foliage, tufting of needles in stem terminals and tree mortality.
4824009 black senna Seymeria cassioides A root parasite of southern pine. Haustorial attachment on pine root.
4824010 black senna Seymeria cassioides A root parasite of southern pine. Senna plant on right of photo, damaged host pine on left.
4824011 nursery operations Container production in Florida, USA
4824012 Cylindrocladium root diseases Cylindrocladium spp. Damaged seedlings infected with C. floridanum. Lack of aeration as foliage mats (or lays down) down causes disease to spread across tray.
4824013 Cylindrocladium root diseases Cylindrocladium spp. Damaged seedlings infected with C. floridanum. Lack of aeration as foliage mats (or lays down) down causes disease to spread across tray.
4824020 Rhizoctonia damping-off, blight and rot Rhizoctonia solani Infection centers in beds
4824021 Rhizoctonia damping-off, blight and rot Rhizoctonia solani Infection center in bed.
4824022 Rhizoctonia damping-off, blight and rot Rhizoctonia solani Infections occur on seedlings in sandy soils as sand, washed by rain and irrigation ("sand splash"), accumulates at the base of the seedlings, creating a microenvironment of reduced aeration and increased relative humidity which favors infection.
4824023 Rhizoctonia damping-off, blight and rot Rhizoctonia solani Infections occur on seedlings in sandy soils as sand, washed by rain and irrigation ("sand splash"), accumulates at the base of the seedlings, creating a microenvironment of reduced aeration and increased relative humidity which favors infection.
4824025 seedling blight of longleaf pine Ceratobasidium spp. Teliomorph sexual stage foliage
4824015 Cylindrocladium root diseases Cylindrocladium spp. Healthy seedling (right) & seedling infected with C. floridanum (left).
4824016 seedling blight of longleaf pine Ceratobasidium spp. A binucleate Rhizoctonia solani-like fungus. Similar to R. solani but with binucleate hyphal cells. Initial symptoms appear as water-soaking and chlorosis of needle bases.
4824017 Cylindrocladium root diseases Cylindrocladium spp. Orange calinectria of C. floridanum
4824018 Cylindrocladium root diseases Cylindrocladium spp. Orange calinectria of C. floridanum
4822044 Fusarium root rot and wilt Fusarium oxysporum fungi in agar plate
4822050 bacterial leaf scorch Xylella fastidiosa Early leaf symptoms development of Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host.
4822052 mistletoes Phoradendron spp. Globose clumps established in tree crown as seen in winter.
4822059 pitch canker Fusarium subglutinans Internal resin impregnation of infected xylem tissue
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.
4822054 mistletoes Phoradendron spp. closeup of foliage clump growing from host tree
4822067 Ectomycorrhizae Thelephora terrestris Sporophores in nursery bed.
4822069 powdery mildew Microsphaera penicillata Initial infection (left) appears as raised circular areas on the leaves covered with powdery white fungus cells which can spread over leaf surface (right).
4822065 ash rusts Puccinia sparganioides Closeup of distinctive pycnia and aecial "cluster cup" with orange-yellow aeciospores proliferating from the surface of infected tissue.
4822071 Phomopsis blight Phomopsis juniperivora characteristic dicoloration (graying) and curling of infected shoot tips
4822073 Phomopsis blight Phomopsis juniperivora fruiting bodies
4822081 Phytophthora basal canker Phytophthora palmivora diagnostic culture from infected tree
4822092 orange hobnail canker Cryphonectria gyrosa On roots exposed at soil surface and damaged from traffic, yard maintenance etc.
4822093 Armillaria root rot Armillaria tabescens Clusters of sporocarps on roots of infected trees appear in the fall of the year
4822094 Armillaria root rot Armillaria tabescens Clusters of sporocarps on roots of infected trees appear in the fall of the year. Note gills on underside.
4823029 brown spot needle blight of pine Mycosphaerella dearnessii Normal-uninfected grass stage seedling.
4823030 brown spot needle blight of pine Mycosphaerella dearnessii severe infection
4823027 brown spot needle blight of pine Mycosphaerella dearnessii Extensive patches in nursery beds
4823022 frost and winter injury (general) bark fissure from freeze
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).
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.
4823035 crown gall Rhizobium radiobacter gall on seedling stem. Chiefland Forest Nursery, Florida USA
4823036 crown gall Rhizobium radiobacter Gall on stem. Chiefland Forest Nursery, Florida USA
4823037 crown gall Rhizobium radiobacter Gall on stem. Chiefland Forest Nursery, Florida USA
4823003 Armillaria root rot Armillaria tabescens Clusters of sporocarps on roots of infected trees appear in the fall of the year near host pine. FL Forestry
4823011 Ganoderma root and butt rot Ganoderma lucidum on roots of infected tree in yard
4823012 Ganoderma root and butt rot Ganoderma lucidum on roots of infected tree in yard
4823013 Ganoderma root and butt rot Ganoderma lucidum Spores on top of fruiting bodies. Note ferns growing under trees. The trees provide shade for the commercial fern production but cultivation of the soil causes root damage and infection.
4823007 Ganoderma root and butt rot Ganoderma lucidum note construction damage
4823020 Armillaria root rots Armillaria spp. An unknown A. spp. exhibiting rarely formed rhizomorphs.
4823063 Rhizina root disease Rhizina undulata Following recent wildfire
4823059 pine needle cast Lophodermella cerina Ascomata (hysterothecia) on infected needle.
4823060 pitch canker Fusarium subglutinans Deodar weevil vectors pitch canker by boring holes into stems to lay eggs.
4823061 pitch canker Fusarium subglutinans Deodar weevil chip cocoon in sapwood. Pitch canker is vectored by adults feeding on shoots and boring into stem to lay eggs.
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)
4823049 pitch canker Fusarium subglutinans resin oozing from infected stem
4823055 pine needle cast Lophodermella cerina Hysterothecia are small (1-2 mm), black elongated fruting bodies which produce ascospores.
4823077 Phytophthora root rot Phytophthora cinnamomi Mortality of first-year seedlings in Munson Forest Nursery, Florida, USA
4823078 Phytophthora root rot Phytophthora cinnamomi Roots of infected nursery seedlings. Note the lack of short lateral roots and presence of black, necrotic and sloughing cortical tissues.
4823082 Phytophthora root rot Phytophthora cinnamomi Resin caked roots of infected seedlings in the field.
4823083 Phytophthora root rot Phytophthora cinnamomi Resin-soaked tap root of seedling infected during its first year in the field.
4823080 Phytophthora root rot Phytophthora cinnamomi Poor seed bed drainage can increase infection risk.
4823072 sand pine root disease Sand Pine Root Disease. Typical sporophores (conks) of Inonotus circinatus (Fr.) R.L. Gilbertson at the base of a mature tree. This is one of a complex of fungi (Inonotus circinatus, Phytophthora cinnamomi, Phaeolus schweinitzii, Verticicladiella procera, Armillariella tabescens, Heterobasidion annosum) that cause Sand Pine Root Disease.
4823070 ectomycorrhizae Pisolithus tinctorius Typical sporophore (left) and mycorrhizal roots. Munson Forest Nursery. Florida USA
4823065 Ganoderma butt rot of palm Ganoderma zonatum Mature conk at base of palm tree.
4823067 Leptographium root disease Leptographium procerum Fungi culture
4823068 Leptographium root disease Leptographium procerum Fungi culture
2733034 Dutch elm disease Ophiostoma ulmi small stem split to show vascular discoloration.

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