| 5449533 |
lichen |
|
|
| 5449534 |
lichen |
|
|
| 5454292 |
acorn and nut weevils |
Curculio spp. |
Acorns showing holes |
| 5454293 |
acorn and nut weevils |
Curculio spp. |
Acorns showing holes |
| 5454294 |
acorn and nut weevils |
Curculio spp. |
Destroyed acorn showing larval frass |
| 5454295 |
acorn and nut weevils |
Curculio spp. |
Destroyed acorn showing larval frass |
| 5424423 |
bacterial leaf scorch |
Xylella fastidiosa |
2 leaves of scarlet oak with distinct bands of discoloration between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa. |
| 5424424 |
bacterial leaf scorch |
Xylella fastidiosa |
Leaf of scarlet oak with some banding of colors between scorched and symptomless tissue but barely any yellow band. |
| 1949014 |
oak wilt |
Ceratocystis fagacearum |
Mature mycelial mat of Ceratocystis fagacearum just under the bark of a wilted Quercus coccinea tree. |
| 1473272 |
oak wilt |
Ceratocystis fagacearum |
one week after early symptoms had appeared. Rapid leaf fall is characteristic; 7/14/1953 |
| 5262015 |
oak wilt |
Ceratocystis fagacearum |
|
| 5265044 |
oak wilt |
Ceratocystis fagacearum |
|
