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Colorado State University is one of our nation's leading research universities with world-class research in infectious disease, atmospheric science, clean energy technologies, and environmental science. It was founded in 1870 as the Colorado Agricultural College, six years before the Colorado Territory became a state. Colorado State University, located in Fort Collins, Colorado, is situated on nearly 5,000 acres of land, including the main campus, a foothills campus, an agricultural campus, and a mountain campus (Pingree Park). Colorado State also has 4,600 acres for research centers, Cooperative Extension offices, and Colorado State Forest Service stations. |
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Stem Decays and Cankers(X)
| 178 Images of 25 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 5495093 | oyster mushroom | Pleurotus ostreatus | Pleurotus ostreotus growth on special medium |
| 5495094 | oyster mushroom | Pleurotus ostreatus | Pleurotus ostreotus growth on special medium |
| 5495096 | oyster mushroom | Pleurotus ostreatus | Pleurotus ostreotus growth on special medium |
| 5495097 | oyster mushroom | Pleurotus ostreatus | Pleurotus ostreotus growth on special medium |
| 5490319 | Thousand Cankers Disease | Geosmithia morbida | Beginning of tree removal for black walnut killed by thousand cankers disease |
| 5488802 | Thousand Cankers Disease | Geosmithia morbida | Black walnut stump left in place and repurposed after being killed by thousand cankers disease |
| 5490216 | Thousand Cankers Disease | Geosmithia morbida | Canker produced by Geosmithia morbida around gallery of walnut twig beetle in southern California walnut |
| 5406095 | Thousand Cankers Disease | Geosmithia morbida | Chipping wood from black walnut killed by thousand cankers. Associated with walnut twig beetle. |
| 5406048 | Thousand Cankers Disease | Geosmithia morbida | Black walnuts in the end stage of thousand cankers. Photograph taken August 5, 2009. Associated with walnut twig beetle. |
| 5417109 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | |
| 5417107 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | |
| 5417110 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Mycelium |
| 5406086 | Thousand Cankers Disease | Geosmithia morbida | Crown thinning symptoms with thousand cankers in advanced stage infestation. Associated with walnut twig beetle. |
| 5406096 | Thousand Cankers Disease | Geosmithia morbida | Canker development around walnut twig beetle gallery in English walnut. |
| 5406094 | Thousand Cankers Disease | Geosmithia morbida | Canker development around walnut twig beetle gallery in English walnut. |
| 5406090 | Thousand Cankers Disease | Geosmithia morbida | Walnut twig beetle galleries and cankers in trunk of hybrid walnut. Associated with walnut twig beetle. |
| 5406091 | Thousand Cankers Disease | Geosmithia morbida | Walnut twig galleries and cankers in branch of hybrid walnut. Associated with walnut twig beetle. |
| 5406100 | Thousand Cankers Disease | Geosmithia morbida | Geosmithia conidiophores and conidia. |
| 5406101 | Thousand Cankers Disease | Geosmithia morbida | Cultured Geosmithia colony in yeast phase. |
| 5406105 | Thousand Cankers Disease | Geosmithia morbida | Chipped wood from black walnut killed by thousand cankers. Many larvae and adults survived in the larger chips. Associated with walnut twig beetle. |
| 5406106 | Thousand Cankers Disease | Geosmithia morbida | Chipped wood from black walnut killed by thousand cankers. many larvae and adults survived in the larger chips. Associated with the walnut twig beetle. |
| 5406107 | Thousand Cankers Disease | Geosmithia morbida | Hauling wood salvaged from black walnut killed by thousand cankers. Associated with walnut twig beetle. |
| 5406103 | Thousand Cankers Disease | Geosmithia morbida | Cultured Geosmithia colony in yeast phase. |
| 5406104 | Thousand Cankers Disease | Geosmithia morbida | Large trunk cankers common in end stage of infestations of thousand cankers. Several fungi, including Fusarium solani, can be cultured from these cankers. |
| 5406102 | Thousand Cankers Disease | Geosmithia morbida | Cultured Geosmithia colony in yeast phase. |
| 5406099 | Thousand Cankers Disease | Geosmithia morbida | Geosmithia in PDA agar growing from walnut twig beetle. View from underside of Petri dish. |
| 5406097 | Thousand Cankers Disease | Geosmithia morbida | Sporulating Geosmithia in PDA agar. |
| 5406098 | Thousand Cankers Disease | Geosmithia morbida | Sporulating Geosmithia in PDA agar. View from underside of Petri dish. |
| 5406088 | Thousand Cankers Disease | Geosmithia morbida | Branch cankers that have developed around twig beetle galleries. Geosmithia can be seen fruiting in the center gallery. Associated with the walnut twig beetle. |
| 5406089 | Thousand Cankers Disease | Geosmithia morbida | branch cankers that have developed around twig beetle galleries. Associated with the walnut twig beetle. |
| 5406085 | Thousand Cankers Disease | Geosmithia morbida | Second in series of two. Black walnuts are showing advanced symptoms of thousand cankers disease in this picture taken September 18, 2009. tree died the following June. Associated with walnut twig beetle. |
| 5382037 | stem decay of black walnut | Phellinus weirianus | Pinyon showing crown thinning and grayish coloration of chronic infestation with pinyon needle scale. |
| 5408096 | gray molds | Botrytis spp. | |
| 5406044 | Thousand Cankers Disease | Geosmithia morbida | Black walnut in end stage of thouand cankers. Photograph taken June 25, 2009; tree was removed one week later. During previos September symptoms were flaggong on a single branch. Associated with walnut twig beetle. |
| 5406083 | Thousand Cankers Disease | Geosmithia morbida | First in a series of two. Black walnuts that have recently died from thousand cankers disease. Photgraph taken June 11, 2009. Dieback was noted in September 18, 2008. |
| 5406078 | Thousand Cankers Disease | Geosmithia morbida | Canker produced one week following introduction of Geosmithia (isolate 12-181) into southern California walnut seedling. Sporulation of the fungus is occuring at the edges of the wound.Associated with walnut twig beetle. |
| 5406079 | Thousand Cankers Disease | Geosmithia morbida | Canker produced approximately 5 weeks following introduction of Geosmithia (isolate 12-181) into Southern California walnut seedling. Sporulation of the fungus is occuring at the edges of the wound. |
| 5406080 | Thousand Cankers Disease | Geosmithia morbida | Canker produced approximately five weeks following the introduction of Geosmithia (isolate 12-181) into black walnut seedling. Associated with walnut twig beetle. |
| 5406081 | Thousand Cankers Disease | Geosmithia morbida | Canker produced approximately five weeks following introduction of Geosmithia (isolate 12-181) into black walnut seedling. Associated with walnut twig beetle. |
| 5406077 | Thousand Cankers Disease | Geosmithia morbida | Canker produced following introduction of Geosmithia(isolate 12-181) into Northern california walnut seedling. Associated with walnut twig beetle. |
| 5406074 | Thousand Cankers Disease | Geosmithia morbida | Introduction of Geosmithia into wound during evaluation of Juglans susceptability to fungal pathogen of thousand cankers. Assocaited with walnut twig beetle. |
| 5406075 | Thousand Cankers Disease | Geosmithia morbida | Evaluation of Juglans seedlings for susceptibility to Geosmithia, the fungal pathogen of thousand cankers. Associated with walnut twig beetle. |
| 5406076 | Thousand Cankers Disease | Geosmithia morbida | Canker produced by control inoculation (1.2 PDA agar) of Norhtern california walnut. Normal wounds with no canker development results from this inoculation. Associated with walnut twig beetle. |
| 5406071 | Thousand Cankers Disease | Geosmithia morbida | Large hybrid walnut fell after succumbing to thousand cankers disease. |
| 5406072 | Thousand Cankers Disease | Geosmithia morbida | Wounding of walnut with hollow cone punch to determine susceptibility to Geosnithia fungus. Associated with walnut twig beetle. |
| 5406068 | Thousand Cankers Disease | Geosmithia morbida | Black walnut recently killed by thousand cankers disease. Associated with walnut twig beetle. |
| 5406069 | Thousand Cankers Disease | Geosmithia morbida | Black walnuts recently killed by thousand cankers. Symptoms were first noted two years prior and trees recieved multiple applications of soil-applied imidacloprid.associated with walnut twig beetle. |
| 5406070 | Thousand Cankers Disease | Geosmithia morbida | large hybrid walnut fell after succumbing to thousand cankers disease. Associated with walnutt wig beetle. |
| 5406067 | Thousand Cankers Disease | Geosmithia morbida | Crown thinning and dieback associated with end stage thousand cankers disease. Asociated with walnut twig beetle. |
| 5406054 | Thousand Cankers Disease | Geosmithia morbida | Twig dieback associated with infestation of walnut twig beetle in Arizonia walnut.Associated with walnut twig beetle. |
| 5406066 | Thousand Cankers Disease | Geosmithia morbida | Large trunk cankers commomn in end stage infestations of thousand cankers. Several fungio, including Fusarium solani, can be cultured from these cankers. |
| 5406047 | Thousand Cankers Disease | Geosmithia morbida | Black walnut showing early stage external symptoms of thousand cankers. A few branches in the crown are showing flagging and there is crown thinning. Associatd with walnut twig beetle. |
| 5406049 | Thousand Cankers Disease | Geosmithia morbida | Black walnut recently killed by thousand cankers. A healthy pecan is in the background. Associated with walnutt wig beetle. |
| 5406050 | Thousand Cankers Disease | Geosmithia morbida | Black walnut recently killed by thousand cankers. A healthy pecan is in background. Assocaited with walnut twig beetle. |
| 5406052 | Thousand Cankers Disease | Geosmithia morbida | Black walnut with advanced symptons of cankers. Associated with walnut twig beetle. |
| 5406053 | Thousand Cankers Disease | Geosmithia morbida | Black walnuts recently killed by thousand cankers. trees first showed symptoms two years earlier and had recieved two applications of imidacloprid in attempt to control disease progression. Associated with walnut twig beetle. |
| 5406045 | Thousand Cankers Disease | Geosmithia morbida | Black walnut in end stage of thousand cankers. Photograph June 25, 2009; tree was removed one week later. Associatd with walnut twig beetle. |
| 5406046 | Thousand Cankers Disease | Geosmithia morbida | Black walnut showing first external symptom of thousand cankers. A single flagging branch can be seen in the crown area on the upper right of the photograph. Associated with walnut twig beetle. |
| 5406041 | Thousand Cankers Disease | Geosmithia morbida | Salvaged wlanut log from tree killed by thousand cankers stored in backyard.Associated with walnut twig beetle. |
| 5406042 | Thousand Cankers Disease | Geosmithia morbida | Training session to identify symptoms of thousand cankers.Assocaited with walnut twig beetle. |
| 5406043 | Thousand Cankers Disease | Geosmithia morbida | Training session to identify symptoms of thousand cankers. Associated with walnut twig beetle. |
| 5366670 | Scleroderris canker of western firs | Grovesiella abieticola | Apothecia of Scleroderris canker on a subalpine fir. |
| 5366669 | Scleroderris canker of western firs | Grovesiella abieticola | Evidence of Scleroderris canker on a twig of subalpine fir. |
| 5366668 | Scleroderris canker of western firs | Grovesiella abieticola | Scleroderris canker on a branch of subalpine fir. |
| 5382048 | stem decay of black walnut | Phellinus weirianus | Fruiting bodies on trunk. |
| 5367244 | bacterial wetwood | Enterobacter nimipressuralis | Cottonwood tree showing symptoms of infection with bacterial wetwood. |
| 5366716 | Thyronectria canker | Thyronectria austroamericana | Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5358917 | fire blight | Erwinia amylovora | A distant shot of a pear orchard at Orchad Mesa showing symptoms of pear decline caused by Erwinia amylovora. |
| 5357204 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Close-up view of sugar beet root sliced open to show signs of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
| 5357203 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Sugar beet plant pulled up and sliced open to show signs of infection with Rhizoctonia crown rot (Rhizoctonia solani) in the root. |
| 5357202 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Sugar beet plant pulled up to show root symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
| 5357200 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Sugar beet plant showing symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
| 5357201 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Sugar beet plant showing advanced symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
| 5357199 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Sugar beet plant showing advanced symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
| 5357590 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Sugar beet root cut open to show symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
| 5357589 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Sugar beet plant showing advanced symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani). |
| 5366943 | indian paint fungus | Echinodontium tinctorium | Conk of Indian paint fungus (Echinodontium tinctorium) on the trunk of a white fir (Abies concolor) in southern Colorado. |
| 5367257 | fire blight | Erwinia amylovora | Evidence of fire blight (Erwinia amylovora) on the branch of a crabapple. |
| 5367254 | fire blight | Erwinia amylovora | Evidence of fire blight (Erwinia amylovora) on the trunk of a crabapple. |
| 5367242 | bacterial wetwood | Enterobacter nimipressuralis | Elm tree showing slime flux, evidence of infection with bacterial wetwood. |
| 5359036 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Early death of potato caused by Rhizoctonia solani in the field. |
| 5366941 | indian paint fungus | Echinodontium tinctorium | View of the underside of an Echinodontium tinctorium conk. |
| 5366942 | indian paint fungus | Echinodontium tinctorium | An Echinodontium tinctorium conk. |
| 5366938 | red heart of pine | Phellinus pini | Phellinus pini conk. |
| 5366937 | red heart of pine | Phellinus pini | Phellinus pini conk. |
| 5366922 | white heartwood rot | Phellinus tremulae | Section of aspen showing decay due to Phellinus tremulae. |
| 5366921 | white heartwood rot | Phellinus tremulae | Conk of Phellinus tremulae on the trunk of an aspen. |
| 5366920 | white heartwood rot | Phellinus tremulae | Conks of Phellinus tremulae on the trunks of aspen trees. |
| 5366919 | oyster mushroom | Pleurotus ostreatus | Oyster mushroom (Pleurotus ostreatus) on the trunk of a boxelder tree (Acer negundo). |
| 5366909 | Trametes wood decay | Trametes hirsuta | Conk of Trametes hirsuta, which causes decay in several species of hardwood trees. |
| 5366908 | Trametes wood decay | Trametes hirsuta | Conk of Trametes hirsuta, which causes decay in several species of hardwood trees. |
| 5367258 | fire blight | Erwinia amylovora | Branch of a crabapple tree symptomatic of infection with fire blight (Erwinia amylovora). |
| 5367256 | fire blight | Erwinia amylovora | Branch of a crabapple tree symptomatic of infection with fire blight (Erwinia amylovora). |
| 5367255 | fire blight | Erwinia amylovora | Dead branch symptomatic of infection with fire blight (Erwinia amylovora). |
| 5367253 | fire blight | Erwinia amylovora | Branch of a crabapple tree symptomatic of infection with fire blight (Erwinia amylovora). |
| 5367252 | fire blight | Erwinia amylovora | Branch of a crabapple tree symptomatic of infection with fire blight (Erwinia amylovora). |
| 5367251 | fire blight | Erwinia amylovora | Dead branch of crabapple, symptomatic of infection with fire blight (Erwinia amylovora). |
| 5367250 | fire blight | Erwinia amylovora | Twig of a crabapple tree showing symptoms of infection with fire blight (Erwinia amylovora). |
| 5367249 | fire blight | Erwinia amylovora | Dead branch symptomatic of infection with fire blight (Erwinia amylovora). |
| 5367243 | bacterial wetwood | Enterobacter nimipressuralis | An American elm tree (Ulmus americana) showing symptoms of bacterial wetwood (slime flux) on the campus of Colorado State University. |
| 5367241 | bacterial wetwood | Enterobacter nimipressuralis | Cottonwood tree showing symptoms of infection with bacterial wetwood. |
| 5367240 | bacterial wetwood | Enterobacter nimipressuralis | American elm tree showing evidence of infection with bacterial wetwood, or slime flux. |
| 5366737 | Dothiora fungus | Dothiora polyspora | Aspen branch showing symptoms of both Dothiora canker (Dothiora polyspora, on the right) and Cytospora canker (Cytospora sp.). |
| 5366736 | Dothiora fungus | Dothiora polyspora | Twigs of an aspen tree showing symptoms of infection with Dothiora canker (Dothiora polyspora). |
| 5366735 | Dothiora fungus | Dothiora polyspora | Damaged aspen tree showing symptoms of infection with Dothiora canker (Dothiora polyspora). |
| 5366734 | Dothiora fungus | Dothiora polyspora | Twigs of an aspen tree showing symptoms of infection with Dothiora canker (Dothiora polyspora). |
| 5366727 | Cytospora cankers | Cytospora spp. | Tip dieback in an ash tree (Fraxinus sp.), caused by infection with Cytospora canker (Cytospora sp.). |
| 5366729 | Cytospora cankers | Cytospora spp. | Symptoms of Cytospora canker (Cytospora sp.) on the limbs of a cottonwood tree (Populus sp.). |
| 5366728 | Cytospora cankers | Cytospora spp. | View through a microscope of Cytophora sp. spores, the causative agent of Cytospora canker. |
| 5366726 | Cytospora cankers | Cytospora spp. | Cytospora canker (Cytospora sp.) -- spore tendrils emerging from the trunk of a tree. |
| 5366725 | Cytospora cankers | Cytospora spp. | Cytospora canker (Cytospora sp.) -- spore tendrils emerging from the trunk of a tree. |
| 5366724 | Cytospora cankers | Cytospora spp. | Colorful symptoms of Cytospora canker (Cytospora sp.) on the trunk of an aspen tree (Populus tremuloides). |
| 5366723 | Cytospora cankers | Cytospora spp. | Symptoms of Cytospora canker (Cytospora sp.) on the trunk of an alder. |
| 5366718 | Cytospora cankers | Cytospora spp. | Symptoms of Cytospora canker (Cytospora sp.) on the branches of an apple tree. |
| 5366722 | Cytospora cankers | Cytospora spp. | Cytospora canker (Cytospora sp.) -- spore tendrils emerging from the trunk of a tree. |
| 5366721 | Cytospora cankers | Cytospora spp. | Symptoms of Cytospora canker (Cytospora sp.) on the branches of three trees. |
| 5366720 | Cytospora cankers | Cytospora spp. | Symptoms of Cytospora canker (Cytospora sp.) on the branch of a spruce. |
| 5366719 | Cytospora cankers | Cytospora spp. | Symptoms of Cytospora canker (Cytospora sp.) on the branch of a willow. |
| 5366717 | Cytospora cankers | Cytospora spp. | Symptoms of Cytospora canker (Cytospora sp.) on the trunk of an aspen tree (Populus tremuloides). |
| 5366715 | Thyronectria canker | Thyronectria austroamericana | Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366714 | Thyronectria canker | Thyronectria austroamericana | Close-up view of the signs and symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366713 | Thyronectria canker | Thyronectria austroamericana | Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366712 | Thyronectria canker | Thyronectria austroamericana | Close-up view of symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366710 | Thyronectria canker | Thyronectria austroamericana | Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366709 | Thyronectria canker | Thyronectria austroamericana | Cross-section of a honeylocust trunk showing signs of infection with both Thyronectria canker (Thyronectria austro-americana, yellow coloration) and Nectria canker (Nectria cinnabarina, dark coloration). |
| 5366706 | Thyronectria canker | Thyronectria austroamericana | Symptoms of Thyronectria canker (Thyronectria austro-americana) on the trunk of a honeylocust (Gleditsia triacanthos) tree. |
| 5366707 | Thyronectria canker | Thyronectria austroamericana | Imperfect fruiting bodies of Thyronectria canker (Thyronectria austro-americana) on honeylocust (Gleditsia triacanthos). |
| 5366708 | Thyronectria canker | Thyronectria austroamericana | Microscopic view of the asci of Thyronectria canker (Thyronectria austro-americana) on honeylocust (Gleditsia triacanthos). |
| 5366696 | corky bark disease | Diplodia tumefaciens | Gall on the side of an aspen trunk (Populus tremuloides) caused by corky bark disease (Diplodia tumefaciens). |
| 5366697 | corky bark disease | Diplodia tumefaciens | Galls on the side of an aspen trunk (Populus tremuloides) caused by corky bark disease (Diplodia tumefaciens). |
| 5366695 | black knot | Apiosporina morbosa | Branches of a chokecherry (Prunus virginiana) showing signs and symptoms of black knot canker (Apiosporina morbosa). |
| 5366694 | black knot | Apiosporina morbosa | Cross-section of the trunk of a chokecherry (Prunus virginiana) showing signs and symptoms of black knot canker (Apiosporina morbosa). |
| 5366692 | black knot | Apiosporina morbosa | Section of a chokecherry branch (Prunus virginiana) showing signs and symptoms of black knot canker (Apiosporina morbosa). |
| 5366690 | Cryptosphaeria canker | Cryptosphaeria ligniota | Signs and symptoms of Cryptosphaeria canker (Cryptosphaeria ligniota) on the trunk of an aspen tree (Populus tremuloides). |
| 5366691 | Cryptosphaeria canker | Cryptosphaeria ligniota | Signs and symptoms of Cryptosphaeria canker (Cryptosphaeria ligniota) on the trunk of an aspen tree (Populus tremuloides). |
| 5366689 | Cryptosphaeria canker | Cryptosphaeria ligniota | Signs and symptoms of Cryptosphaeria canker (Cryptosphaeria ligniota) on the trunk of an aspen tree (Populus tremuloides). |
| 5366687 | Cryptosphaeria canker | Cryptosphaeria ligniota | Signs and symptoms of Cryptosphaeria canker (Cryptosphaeria ligniota) on the trunk of an aspen tree (Populus tremuloides). |
| 5366686 | sooty-bark canker | Encoelia pruinosa | Apothecia of sooty-bark canker (Encoelia pruinosa) on the trunks of aspen trees (Populus tremuloides). |
| 5366685 | sooty-bark canker | Encoelia pruinosa | Signs and symptoms of sooty-bark canker (Encoelia pruinosa) on the trunk of an aspen tree (Populus tremuloides). |
| 5366684 | sooty-bark canker | Encoelia pruinosa | Apothecia of sooty-bark canker (Encoelia pruinosa) on the trunk of an aspen tree (Populus tremuloides). |
| 5366683 | sooty-bark canker | Encoelia pruinosa | Close-up view of signs and symptoms of sooty-bark canker (Encoelia pruinosa) on the trunks of aspen trees (Populus tremuloides). |
| 5366682 | sooty-bark canker | Encoelia pruinosa | Signs and symptoms of sooty-bark canker (Encoelia pruinosa) on the trunk of an aspen tree (Populus tremuloides). |
| 5366681 | sooty-bark canker | Encoelia pruinosa | Close-up view of signs and symptoms of sooty-bark canker (Encoelia pruinosa) on the trunk of an aspen tree (Populus tremuloides). |
| 5366680 | Hypoxylon canker of aspen | Entoleuca mammata | Symptoms of hypoxylon canker (Hypoxylon mammatum) on the trunk of an aspen tree (Populus tremuloides). |
| 5366679 | Hypoxylon canker of aspen | Entoleuca mammata | Close-up view of hypoxylon canker (Hypoxylon mammatum) on the trunk of an aspen tree (Populus tremuloides). |
| 5366678 | Hypoxylon canker of aspen | Entoleuca mammata | Hypoxylon canker (Hypoxylon mammatum) on the trunk of an aspen tree (Populus tremuloides). |
| 5366677 | Hypoxylon canker of aspen | Entoleuca mammata | Hypoxylon canker (Hypoxylon mammatum) on the trunk of an aspen tree (Populus tremuloides). |
| 5366676 | black rot | Ceratocystis fimbriata | Symptom of black canker (Ceratocystis fimbriata) on an aspen tree. |
| 5366672 | black rot | Ceratocystis fimbriata | Black canker (Ceratocystis fimbriata) on an aspen tree. |
| 5366671 | black rot | Ceratocystis fimbriata | Black canker (Ceratocystis fimbriata) on an aspen tree. |
| 5366667 | Siberian elm canker | Botryodiplodia hypodermia | Signs and symptoms of Botryodiplodia canker (Botryodiplodia hypodermia) on an elm trunk. |
| 5360609 | gray mold | Botrytis cinerea | A drybean pod showing symptoms of gray mold (Botrytis cinerea) in the field. |
| 5360610 | gray mold | Botrytis cinerea | A drybean pod showing symptoms of gray mold (Botrytis cinerea) in the field. |
| 5360608 | gray mold | Botrytis cinerea | A drybean pod showing symptoms of gray mold (Botrytis cinerea) in the field. |
| 5361372 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Drybean plants showing symptoms of Rhizoctonia and Pythium root rots caused by Rhizoctonia solani and Pythium spp. respectively in the field. |
| 5361371 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Roots of drybean seedlings showing early symptoms of Rhizoctonia root rot caused by Rhizoctonia solani. |
| 5361370 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Roots of drybeans showing advanced symptoms of Rhizoctonia root rot caused by Rhizoctonia solani. |
| 5360378 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Drybean pods showing symptoms of web blight caused by Thanatephorus cucumeris. |
| 5360377 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Drybean plants showing symptoms of web blight caused by Thanatephorus cucumeris. |
| 5360376 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Drybean leaflets showing symptoms of web blight caused by Thanatephorus cucumeris. |
| 5360375 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Drybean leaflets showing symptoms of web blight caused by Thanatephorus cucumeris. |
| 5358905 | gray mold | Botrytis cinerea | Gray mold (Botrytis cinerea) infestion of a bean pod in a field in Colombia. |
| 5358900 | Cercospora fungi | Cercospora spp. | Coinfection of gray leaf spot (Cercospora vanderysti) and white leaf spot (Pseudocercosporella albida) on drybean leaflet in a field in Colombia. |
| 5358899 | Cercospora fungi | Cercospora spp. | Gray leaf spot caused by Cercospora vanderysti on drybean leaflet in a field in Colombia. |
| 5358898 | Cercospora fungi | Cercospora spp. | The scale of gray leaf spot caused by Cercospora vanderysti on drybean leaflets in a field in Colombia. |
| 5358897 | Cercospora fungi | Cercospora spp. | Drybean leaflets showing symptoms of gray leaf spot caused by Cercospora vanderysti in a field in Colombia. |
| 5358994 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Symptoms of web blight (Thanatephorus cucumeris) on the pods of dry beans. |
| 5358993 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Symptoms of web blight (Thanatephorus cucumeris) on the foliage of dry beans. |
| 5358992 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Symptoms of web blight (Thanatephorus cucumeris) on the foliage of dry beans. |
| 5358990 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Symptoms of web blight (Thanatephorus cucumeris) on the foliage of dry beans. |
| 5358991 | Rhizoctonia damping-off, blight and rot | Rhizoctonia solani | Symptoms of web blight (Thanatephorus cucumeris) on the foliage of dry beans. |
| 5362300 | Nectria canker | Nectria galligena | Onion plant displaying symptoms of bacterial leaf streak (Pseudomonas viridiflava) disease. |
| 5361513 | gray mold | Botrytis cinerea | Yellow onion bulbs with symptoms of the brown stain disease caused by Bortytis cinerea. |
| 5361509 | gray molds | Botrytis spp. | An onion plant showing blast symptoms caused by Bortytis sp. in the field. |
| 5361508 | gray molds | Botrytis spp. | A pile of onion culls infected with Botrytis sp. near a field. |
| 5360330 | gray molds | Botrytis spp. | Gray mold (Botrytis sp.) and black mold (Aspergillus niger) on onions. |
| 5359356 | gray molds | Botrytis spp. | Botrytis soil-line rot of onions. |
| 5356715 | Cytospora cankers | Cytospora spp. | Cytosporaspore tendrils on Sycamore |
