| Image |
Descriptor |
Description |
Photographer |
| 5366671 |
Sign |
Black canker (Ceratocystis fimbriata) on an aspen tree. |
William Jacobi |
| 5366672 |
Symptoms |
Black canker (Ceratocystis fimbriata) on an aspen tree. |
William Jacobi |
| 5366676 |
Symptoms |
Symptom of black canker (Ceratocystis fimbriata) on an aspen tree. |
William Jacobi |
| 1400109 |
Symptoms |
Canker on high elevation aspen, Bristlecone Trail, Toiyabe National Forest. |
Linda Haugen |
| 1442139 |
Symptoms |
|
USDA Forest Service - Rocky Mountain Region Archive |
| 1442140 |
Symptoms |
|
USDA Forest Service - Rocky Mountain Region Archive |
| 1442141 |
Symptoms |
|
USDA Forest Service - Rocky Mountain Region Archive |
| 1473093 |
Symptoms |
|
Thomas E. Hinds |
| 1473154 |
Symptoms |
also referred to as black canker; photo taken 9/1/1968 |
Thomas E. Hinds |
| 1473164 |
Symptoms |
photo taken 7/1/1970 |
Thomas E. Hinds |
| 2251072 |
Symptoms |
tree windthrown at canker |
USDA Forest Service Archive |
| 2652018 |
Symptoms |
on quaking aspen in interior Alaska |
Tom Laurent |
| 4213049 |
Symptoms |
|
Minnesota Department of Natural Resources Archive |
| 4213050 |
Symptoms |
|
Minnesota Department of Natural Resources Archive |
| 4215053 |
Symptoms |
cankers on aspen |
Thomas E. Hinds |
| 4215054 |
Symptoms |
on aspen |
Thomas E. Hinds |
| 5034041 |
Symptoms |
|
Joseph O'Brien |
| 5049063 |
Symptoms |
Ceratocystis canker on aspen |
USDA Forest Service - Forest Health Protection - St. Paul Archive |
