Linda Haugen's Images
Title: Plant PathologistOrganization: USDA Forest Service
Unit: Forest Health Protection
Country: United States
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Stem and Leaf Rusts(X)
| 5 Images of 3 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 1400124 | cedar-apple rust | Gymnosporangium juniperi-virginianae | telial horns from galls on cedar, southeast Minnesota in spring following moist weather. |
| 1400126 | gall rust of jack pine | Cronartium quercuum f.sp. banksianae | Pycnial stage (honey-like droplets on the gall) of gall rust on jack pine in Wisconsin in spring. |
| 1400122 | southwestern white-spored gall rust | Peridermium (An undescribed species) | White-spored gall rust in the Toiyabe National Forest, Nevada. Previously thought to be a white-spored variation of Western gall rust, this fungus is probably actually a distinct species. |
| 1400121 | southwestern white-spored gall rust | Peridermium (An undescribed species) | White-spored gall rust on Ponderosa pine, Toiyabe National Forest, Nevada. Although previously thought to be a white-spored variation of western gall rust, this rust is probably a distinctly separate species. This photo was taken on a field trip in 1998. At that time the researchers who selected the site clearly explained that white-spored gall rust was distinctly different from typical orange-spored western gall rust, and that this was a site with the white-spored type. A species description and valid scientific name is still pending. Mycologia, 90(2), 1998, pp244-257. http://www.jstor.org/stable/3761300 |
| 1400125 | cedar-apple rust | Gymnosporangium juniperi-virginianae | Telial horns from galls on cedar, following moist spring weather in southeast Minnesota. |
