Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 190 ASCOMYUKTES. fertilise the trichogyne and cause it to develo]) as an ascogoniuni. P. ochraceum (Wahlenb.) (P. fulvum 1). C.) causes yellowish- red spots '111 leaves oi' Primus Paclm. P. obscurum Juel. produces thickened leaf-spots on Astragalus alpinus and A. oroboules; on the under side these are whitish, on the upper side they show the spermogonia as red points. The damage caused by Polystifjma
Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 190 ASCOMYUKTES. fertilise the trichogyne and cause it to develo]) as an ascogoniuni. P. ochraceum (Wahlenb.) (P. fulvum 1). C.) causes yellowish- red spots '111 leaves oi' Primus Paclm. P. obscurum Juel. produces thickened leaf-spots on Astragalus alpinus and A. oroboules; on the under side these are whitish, on the upper side they show the spermogonia as red points. The damage caused by Polystifjma is easily kept in check l)y 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.—Epichloe lyphina, forming numerous white cushions, which completely encircle the grass-stems, (v. Tubeuf phot.) The asci are cylindrical, and contain eight thread-like unicellular
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