. Bulletin of the Department of Agriculture. Agriculture; Agriculture. FOREST DISKASE SURVEYS. 11 always remains a great danger of infection spreading to the young stock, with consequent loss. This has been shown in several recent cases where forest nurseries were located in close proximity to dis- eased trees and alternate hosts. At the forest nursery at Haugan,. Fig. 12.—Fomes officinalis, chalk fungus, showing typical rot in lodgepole pine. Note the white mycelium in the cracks. (Photographed hy G. G. Hedgcock.) Mont., yellow-pine seedling's became seriously infected with Cronar- tium
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. FOREST DISKASE SURVEYS. 11 always remains a great danger of infection spreading to the young stock, with consequent loss. This has been shown in several recent cases where forest nurseries were located in close proximity to dis- eased trees and alternate hosts. At the forest nursery at Haugan,. Fig. 12.—Fomes officinalis, chalk fungus, showing typical rot in lodgepole pine. Note the white mycelium in the cracks. (Photographed hy G. G. Hedgcock.) Mont., yellow-pine seedling's became seriously infected with Cronar- tium coleosporioides (Peridermium filamentosum Pk.). The disease was transmitted by means of the alternate form of the rust occurring on the Indian paintbrush (Castilleja miniata Dough), which was found growing at the very edge of the nursery A survey of 1 Weir, J. R., and Hubert, E. E. A serious disease in forest nurseries caused by Peri- dermium filamentosum. In Jour. Agr. Research, v. 5, no. 17, p. 781-785. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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