. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 390 UREDINEAE. In May or June the cushions swell up and become large brownish-yellow gelatinous clumps, dotted over with dark points, the teleutospores. Proniycelia arise from one or more germ- pores in each spore, and give off basidia with sporidia (basidio-. Fio. 224.—Aecidia and Pycnidia of various species of Gt/mnoxporangium: G. tremelloides—1 and 3, aecidia on leaf of Pyrun Aria; 0 and fi, aecidia on leaf of Pyrv
. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 390 UREDINEAE. In May or June the cushions swell up and become large brownish-yellow gelatinous clumps, dotted over with dark points, the teleutospores. Proniycelia arise from one or more germ- pores in each spore, and give off basidia with sporidia (basidio-. Fio. 224.—Aecidia and Pycnidia of various species of Gt/mnoxporangium: G. tremelloides—1 and 3, aecidia on leaf of Pyrun Aria; 0 and fi, aecidia on leaf of Mains; 10 and 20, portions of the peridium of an aecidium from Ci, showing the peculiar articulation of the colls. G. junlpitinuui—3 and U, aecidia on Pyrun Aucuparia; 7 and S- aecidia on Amelancfiier vulgaris. G. clavariafforme—9 and 10, aecidia on Pyius latifoUa; 11, 1'2, and IG, aecidia on Crataegus Oxyacantha, grown out-of-doors; lU, the same aecidia, enlarged; ti, I'j, and 17, aecidia on Crataegus Oxyacantha, indoor culture; 18, deformed twig of Crataegus bearing pycnidia. (After Tubeuf.) spores) capable of immediate germination. The gelatinous mass dries up from time to time, leaving a bright yellow scar on the swollen part of the host-branch. The sporidia germinate most easily on species of Surhus (Fi/rns). Infections with. 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, 1862-1941. London, New York [etc. ] : Longmans, Green & co.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
