. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 446 Bulletin 315 Absidia spinosa Lendner, Bui. Herb. Boissier ser. 2, 5:—. 1905; Les Mucorinees de la Suisse, 132-134. fig. 46. 1908. Syn. Absidia cylindrospora Hagem, Untersuch. li. Norw. Mucorineen i: 45-46. fig. 21. 1908; reprint from Skr. I, Klasse No. 7. 1907- Culture forming very dense, grayish, cotton-like aerial myc
. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 446 Bulletin 315 Absidia spinosa Lendner, Bui. Herb. Boissier ser. 2, 5:—. 1905; Les Mucorinees de la Suisse, 132-134. fig. 46. 1908. Syn. Absidia cylindrospora Hagem, Untersuch. li. Norw. Mucorineen i: 45-46. fig. 21. 1908; reprint from Skr. I, Klasse No. 7. 1907- Culture forming very dense, grayish, cotton-like aerial mycelium which attains a height of cm.; stolons slightly incurved; curves carrying sporangiophores in fascicles of 2 to 3; sporangia pyriform, measuring 34/x long without the apophysis and 28/i thick; columella 20ix thick, vase-like in form, terminated by a blunt or round point, attaining one third of the length of the columella. A septum situated 25/i below the apophysis separates the sporangia from sporangiophores; spores hyaline, oval or short cylindrical, 2 by 4-5/x. Zygospores globose or dulifonn, verrucose, formed by the fusion of two unequal gametes supported by a bifurcated filament. The most vigorous ? suspensor alone produces prolongations or circinate appendages. Hab. Isolated from garden soil, Geneva, Lendner; from humous soil near Christiania, Norway, Hagem. Rhizopus Rhizopus nigricans Ehrenberg, Mucor Stolonifer in Sylv. Myc. Berol., 25. 1818; Rhizopus nigricans in Nova Acta Acad. Leop. 11: 198. 1820. Stolons far-spreading, even growing onto and spreading over the culture glass, covering the substratum and its neighborhood with thick cobwebby growths 1-3 cm. long and occasionally still longer, simple or sparsely branched, occasionally fork-like internodes, with smooth, at first hyaline then finally brown, membrane, contents colorless; Fig. loi.—Rhi- rhizoids more or less richly branched, at first with color- zoptis nigri- jess, later with brown or black-brown
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