. 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. Plant diseases; Parasitic plants. 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 Polys
. 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. Plant diseases; Parasitic plants. 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 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. 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 Tubeuf, Karl, Freiherr von, 1862-. London Longman's, Green
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897
