USDA Forest Service
| 9 Images of 6 Subjects | View Subject List | View Image Details | View Thumbnails |
| Subject | Scientific Name | Images |
|---|---|---|
| beech bark disease | Nectria coccinea | 1 |
| decay | 2 | |
| pruning (general) | 2 | |
| sudden oak death | Phytophthora ramorum | 2 |
| visual tree inspection | 1 | |
| wood decay | 1 |

