| imageID: | 17216 |
| Description: | Catkins on Populus wislizenii |
| Keywords: | catkins forest pathology |
| Organisms: | cottonwood |
| Original collection id: | 1249 |
| Media: | B&W photograph 3 x 4 in. and glass plate |
| Collection: | RMRS Archive Images |
| Quality: | 3 |
| Date(mm/dd/yyyy): | 5/1/1915 |
| Comments: | Pistillate branch of cottonwood sprayed with crude oil April 21, 1915. Photo taken May 1, 1915. Note how turgescense of catkins has not been suddenly changed by [but] each catkin has slowly dried [???] and died and finally the entire catkin drops off. This is in marked contrast to the H2SO4 action on catkins. |
| Citation: | Use of this image is governed by Creative Commons CC BY. If you use the image, please include the following citation: USDA Forest Service. 2007. Forest Service Research Image Library. Fort Collins, CO: Forest Service Research Data Archive. https://www.fs.usda.gov/rds/imagedb |
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