| Image |
Descriptor |
Description |
Photographer |
| 2635002 |
Sign |
Rhizomorphs under bark |
USDA Forest Service Archive |
| 4213070 |
Symptoms |
discoloration on stem |
Minnesota Department of Natural Resources Archive |
| 4213071 |
Symptoms |
large canker |
Minnesota Department of Natural Resources Archive |
| 4213072 |
Symptoms |
dieback |
Minnesota Department of Natural Resources Archive |
| 5028047 |
Symptoms |
|
USDA Forest Service - Forest Health Protection - St. Paul Archive |
| 5028048 |
Symptoms |
Cankers often ooze sap from beneath the bark. |
Joseph O'Brien |
| 5028049 |
Symptoms |
|
USDA Forest Service - Forest Health Protection - St. Paul Archive |
| 5049047 |
Symptoms |
|
Joseph O'Brien |
| 5049048 |
Symptoms |
|
Joseph O'Brien |
| 5049049 |
Symptoms |
|
Joseph O'Brien |
| 5049050 |
Symptoms |
|
Joseph O'Brien |
| 5049051 |
Symptoms |
|
Joseph O'Brien |
| 5049052 |
Symptoms |
|
Joseph O'Brien |
| 5049053 |
Symptoms |
|
Joseph O'Brien |
| 0590008 |
Symptoms |
debarked canker |
Robert L. Anderson |
| 0590009 |
Symptoms |
large canker |
Robert L. Anderson |
| 0590010 |
Symptoms |
crown dieback |
Robert L. Anderson |
| 0590027 |
Symptoms |
|
Robert L. Anderson |
| 1396141 |
Symptoms |
|
USDA Forest Service - Northeastern Area Archive |
| 1396142 |
Symptoms |
|
USDA Forest Service - Northeastern Area Archive |
| 1396143 |
Symptoms |
|
USDA Forest Service - Northeastern Area Archive |
| 1396147 |
Symptoms |
|
USDA Forest Service - Northeastern Area Archive |
| 1396148 |
Symptoms |
|
USDA Forest Service - Northeastern Area Archive |
| 1398074 |
Symptoms |
|
Mike Ostry |
| 1399075 |
Symptoms |
|
Manfred Mielke |
| 1399076 |
Symptoms |
|
Manfred Mielke |
| 1399077 |
Symptoms |
|
Manfred Mielke |
| 1399078 |
Symptoms |
|
Manfred Mielke |
| 1399079 |
Symptoms |
|
Manfred Mielke |
| 1399080 |
Symptoms |
|
Manfred Mielke |
