Page:The Living Flora of West Virginia and The Fossil Flora of West Virginia.pdf/66

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42 THE WEST VIRGINIA FLORA RICHAEGET Acad., 1894: 38&ri, Feb. 15. T. NODULOSUM E. & E., Proc. Phila. Acad., 1894, 385. TYPE HABITAT: On dead leaves Carex Fraseri, Feb. 11. 1894 (Nuttall, discov, 1373, 333). Erumpent, tufted, becoming subeffused, black, tufts gregarious, forming subvelutinous patches 2 to 4 mm. across, or when standing singly the hypha and conidia forming a compact mass .5 to 1 mm, diameter, and resembling somewhat the sorus of a Puccinia. Hyphæ simple sparingly fasciculate, brown, septate, often swollen at the septa, about 4 u thick and 200 to 300 p long. Conidia near the base of the hyphæ, at first elliptical, yellowish-hyaline, uniseptate, 8 to IO x 6 to 7 H, soon becoming 4 to 6-septate, muriform and opaque, 10 to 25 n diameter, subglobose, obovate, or elliptical. SEPTOSPORIUM Corda. S. EQUISETI PECK, Rep. State Bot. N. Y., 1892, 25. TYPE HABITAT: Tips of living leaves Equisetum artense, Doddridge Co., near Center Point, and Monongalia Co., on College campus, Morgantown (Millspaugh, discov. 1891). Hyphiæ forming minute tufts, the fertile very short, bearing acrogenous spores, the sterile longer, septate, colored; spores elliptical, usually with three transverse septæ and one or two longitudinal ones, colored, .001 in. long, .005 in. broad. ALTERNARIA Nees. A. BRASSICAE XIGRESCENS Pegl. On Musk-melons, Ohio, near Elm Grove (Sheldon). SARCINELLA Sacc. S. HETEROSPORA Sacc. On Cercis Canadensis, Oct. 16, 1894 (Nuttall, 1726, 610). STILBACEAE. STILBUM Tode. S. MAGNUM Peck. In cracks of bark, Nov. 6, 1893. Spores 2.5 x 1.25 M (Nuttall, 1278, 225). S. FLAVIPES Peck, On dead driftwood Platenus occidentalis, Dec. 12, 1894 (Nuttall, 1767). S. ERYTHROCEPHALUM Ditm. On dung of Rabbit, Jan. 18, 1894 (Nuttall, 1345, 304). Digitized by Google