| 5476480 |
Septoria leaf spot |
Septoria betulae |
Conidia evident. Crushed leaf tissue. |
| 5476483 |
Septoria leaf spot |
Septoria betulae |
Conidium |
| 5476484 |
Septoria leaf spot |
Septoria betulae |
Symptoms (Aug.10) |
| 5476482 |
Septoria leaf spot |
Septoria betulae |
Conidia |
| 5476479 |
Septoria leaf spot |
Septoria betulae |
Black pycnidia evident in leaf spot |
| 5476481 |
Septoria leaf spot |
Septoria betulae |
Conidia from crushed leaf tissue |
| 5476478 |
Septoria leaf spot |
Septoria betulae |
Black pycnidia evident in leaf spot |
| 5476433 |
Phoma blight |
Phoma exigua var. exigua |
Symptoms |
| 5457972 |
maple cankers |
Stegonsporium spp. |
dark spores |
| 5457973 |
maple cankers |
Stegonsporium spp. |
fruiting body with mature spores |
| 4554082 |
Guignardia blotch of buckeyes and horsechestnuts |
Guignardia aesculi |
|
| 5435603 |
Avocado Dieback |
Neofusicoccum parvum |
|
| 5435608 |
Japanese pear scab |
Venturia nashicola |
|
| 0364011 |
Septoria leaf spot and cankers |
Septoria spp. |
leaf spots on cottonwood |
| 5405252 |
anthracnose |
Aureobasidium apocryptum |
Upper surface of maple leaf with tan blotches having dark-green halos caused by the fungus Aureobasidium apocryptum. |
| 5405253 |
anthracnose |
Aureobasidium apocryptum |
Upper surface of maple leaf with tan blotches having dark-green halos caused by the fungus Aureobasidium apocryptum. |
| 5405254 |
anthracnose |
Aureobasidium apocryptum |
Close-up of upper surface of maple leaf with tan blotches having dark-green halos caused by the fungus Aureobasidium apocryptum. |
| 5405255 |
anthracnose |
Aureobasidium apocryptum |
Close-up of lower surface of maple leaf with tan blotches having dark-green halos caused by the fungus Aureobasidium apocryptum. |
| 5405256 |
anthracnose |
Aureobasidium apocryptum |
Close-up of lower surface of maple leaf showing one tan blotchy area having a dark-green halo caused by the fungus Aureobasidium apocryptum. |
| 5405257 |
anthracnose |
Aureobasidium apocryptum |
Close-up of lower surface of maple leaf showing tan infected tissue caused by the fungus Aureobasidium apocryptum. Note the lack of any signs of the pathogen. |
| 5405258 |
anthracnose |
Aureobasidium apocryptum |
Lower surface of maple leaf stained to reveal random acervuli of the fungus Aureobasidium apocryptum. |
| 5405259 |
anthracnose |
Aureobasidium apocryptum |
Lower surface of maple leaf stained to reveal a cluster of acervuli of the fungus Aureobasidium apocryptum. |
| 5405260 |
anthracnose |
Aureobasidium apocryptum |
An acervulus with stained conidia of the fungus Aureobasidium apocryptum. |
| 5405261 |
anthracnose |
Aureobasidium apocryptum |
An acervulus with stained conidia of the fungus Aureobasidium apocryptum. |
| 5405262 |
anthracnose |
Aureobasidium apocryptum |
Conidia of the fungus Aureobasidium apocryptum. |
| 5405340 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Several leaves with large, brown blotches with yellow halos on the upper leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are angular tan to brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara cercidis. |
| 5405341 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Several leaves with large, brown blotches with yellow halos on the lower leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are angular tan to brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara cercidis. |
| 5405342 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
A single leaf with large, brown blotches with yellow halos on the upper leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are angular tan to brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara cercidis. |
| 5405343 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
A single leaf with large, brown blotches with yellow halos on the lower leaf surface caused by the fungus Pseudocercospora vitis. Also on the leaves are white to gray-brown blocks of infected tissue mostly along the veins caused by the fungus Plasmopara |
| 5405344 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Close-up of a large, brown blotch on the upper leaf surface caused by the fungus Pseudocercospora vitis. |
| 5405345 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Light shown at a steep angle to the upper leaf surface surface illuminating random tufts which are "synnemata", the spore-producing bodies of the fungus Pseudocercospora vitis. |
| 5405346 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
View across single spot with dark green-black "synnemata" of Pseudocercospora vitis, which are clusters of conidiophores and conidia, coming up from infected tissue. |
| 5405347 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Close-up view across single spot with dark green-black "synnemata" of Pseudocercospora vitis, which are clusters of conidiophores and conidia, coming up from infected tissue. |
| 5405348 |
Pseudocercospora leaf spot |
Pseudocercospora vitis |
Close-up of single dark green-black "synnema" of Pseudocercospora vitis, which are clusters of conidiophores and conidia, coming up from infected tissue. |
| 5408099 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Magnification of 200X |
| 5408100 |
Embellisia skin blotch and bulb canker of garlic |
Embellisia allii |
Magnification of 400X |
| 5408095 |
Alternaria black molds / stem cankers |
Alternaria spp. |
|
| 5335031 |
Septoria leaf spot and cankers |
Septoria spp. |
poplar |
| 5369056 |
Septoria leaf spot and cankers |
Septoria spp. |
Dark brown, angular spots with gray flecks. |
| 5369057 |
Septoria leaf spot and cankers |
Septoria spp. |
Close-up of the underside of the leaf showing dark brown, angular spots with gray flecks. |
| 5369058 |
Septoria leaf spot and cankers |
Septoria spp. |
One infected area of leaf where dark brown, spore-producing bodies ("pycnidia") can be seen within the spots. |
| 5369059 |
Septoria leaf spot and cankers |
Septoria spp. |
Close-up of infected area with dark brown, spore-producing bodies ("pycnidia"). |
| 5369060 |
Septoria leaf spot and cankers |
Septoria spp. |
Dark-field observation of long, thin spores of a species of the fungus Septoria. |
| 5369061 |
Septoria leaf spot and cankers |
Septoria spp. |
Long, thin spores of a species of the fungus Septoria. |
| 1949025 |
Septoria canker of poplar |
Mycosphaerella populorum |
Cankers caused by Mycosphaerella populorum on poplar stems. |
| 5257036 |
eye spot |
Phyllosticta minima |
|
| 5257037 |
eye spot |
Phyllosticta minima |
|
| 5190100 |
Septoria leaf spot and canker |
Septoria musiva |
necrotic area with dark fruiting bodies in center |
