. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 119 P. macrosporus Ung. Asci globose to elliptic, 40-80 x 35-60 /x; membrane yellowish, up to 5 it* in thickness, contents colorless; spores elongate-ellipsoid, 2-3 xl fi. It produces small galls, which are at first watery looking, then. Fig. 81.—Protomyces. A, mycelium and young ascus; E, ascus with mature spores. After De Bary. brown, upon the leaves and stems of various economic and non- economic Umbelliferse. P. pachydermus Thiim. affects carrots and dandehons. P. rhizobius Trail, grows on Po
. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 119 P. macrosporus Ung. Asci globose to elliptic, 40-80 x 35-60 /x; membrane yellowish, up to 5 it* in thickness, contents colorless; spores elongate-ellipsoid, 2-3 xl fi. It produces small galls, which are at first watery looking, then. Fig. 81.—Protomyces. A, mycelium and young ascus; E, ascus with mature spores. After De Bary. brown, upon the leaves and stems of various economic and non- economic Umbelliferse. P. pachydermus Thiim. affects carrots and dandehons. P. rhizobius Trail, grows on Poa annua in Scotland. Several other species are found on wild plants. Subclass Protoascomycetes (p. 117) There is a single order, the Saccharomycetales, with about seventy species. Mycelium often undeveloped; asci isolated or formed at different points on the mycelium, mainly 4-spored; spores unicellular; asexual reproduction by gemmation or by 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 Stevens, Frank Lincoln, 1871-1934. New York : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1913
