USDA Forest Service
| 31 Images of 12 Subjects | View Subject List | View Image Details | View Thumbnails |
| Subject | Scientific Name | Images |
|---|---|---|
| Armillaria root rots | Armillaria spp. | 1 |
| cold injury (low temperature) | 1 | |
| Compartmentalization Of Decay In Trees (CODIT) | 8 | |
| cracks or splits | 7 | |
| flush cut | 1 | |
| human caused injury | 1 | |
| imbedded objects | 2 | |
| included bark | 1 | |
| inrolled crack | 4 | |
| mechanical | 1 | |
| ribbed crack | 1 | |
| shear crack | 3 |

