Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 190 ASCOMYCETES. fertilise the trichogyne and cause it to develop as an ascogonium. P. ochraceum (Wahlenb.) (P. fulvicm D. C.) causes yellowish- red spots on leaves of Fric/iics Padus. P. obscurum Juel. produces thickened leaf-spots on Astragalus alpiiiiis and A. orohoidcs; on the under side these are whitish, on the upper side they show the spennogonia as red p
Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 190 ASCOMYCETES. fertilise the trichogyne and cause it to develop as an ascogonium. P. ochraceum (Wahlenb.) (P. fulvicm D. C.) causes yellowish- red spots on leaves of Fric/iics Padus. P. obscurum Juel. produces thickened leaf-spots on Astragalus alpiiiiis and A. orohoidcs; on the under side these are whitish, on the upper side they show the spennogonia as red points. The damage caused by Polystigma is easily kept in check by burning infected leaves in autumn. Epichloe. The stromata form on the stems of grasses yellowish mould- like coatings in which the flask-shaped perithecia are embedded. Fig. 83.—Epichlo'i iyphina, forming numerous white cushions, which completely encircle the grass-stems, (v. Tubeuf phot.) The asci are cylindrical, and contain eight thread-like unicellular
Size: 1239px × 1614px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
