Images taken in United States
| 4 Images of 2 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 1473187 | aspen/poplar | Populus spp. | Work was done on this syndrome in the 1970s as many isolated discoveries of the syndrome were made in the region. It is suspected to be an expression of a developmental disease resuting from a stress to roots; no virus or biotic agent found. Photo taken 9/1975 |
| 1473186 | aspen/poplar | Populus spp. | Work was done on this syndrome in the 1970s as many isolated discoveries of the syndrome were made in the region. It is suspected to be an expression of a developmental disease resuting from a stress to roots; no virus or biotic agent found. Photo taken 9/1975 |
| 1473006 | quaking aspen | Populus tremuloides | |
| 1473013 | quaking aspen | Populus tremuloides | tree #539 |
