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Rh WEST VIRGINIA GEOLOGICAL SURVEY

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CYTOSPORELLA Sacc. C. carnea E. & E., Bull., Torr. Club, 24:287 (1897). Stroma at first tuberculo-hemi spherical and covered by the epidermis, soon erumpent through the transversely or laciniately ruptured epidermis, brown outside, white and of firm consistence within (except the central portion), multilocular cells light-colored ; sporules elliptical, hyaline, con tinuous, 5-7 X 2.5-3 ^ The stroma is about 1.5 mm. wide and 1 mm. high and finally shrinks away from the ruptured epidermis and then is more or less distinctly flesh-colored. On dead limbs of Castanea. Fayette : near Nuttaliburg, March, 1896 (Nuttall).

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CYTOSPORA Ehrenb. Cf.ltidis E. & E., Proc. Phila. Acad., 1894, 360. Type habitat : On dead limbs Crttis occidentalis, Feb. 2, 1894 (Nuttall, discov. 1358, 314). Stroma valsoid, flat, thin, 1.5 to 2 mm. diameter, only penetrating the surface of the bark, multilocular, gray in side, raising the bark into small pustules and finally ruptur ing it, cells representing perithecia. Sporules allantoid, 6 to 7 X i to 1.5 /1. Halesiae E. & E., Proc. Phila. Acad., 1894, 361. Type habitat: On dead limbs of Mohrodendron Carolinum (Halesia tetrapterd), June 7, 1894 (Nuttall, discov. IS40). Stromata convex-conical, sunk in the bark, orbicular, about i mm. diameter, white inside, unilocular, the inner surface of the cavity lined with simple straight basidia about 15 ц long, bearing the oblong-fusoid, hyaline, 2-nucleate, straight, 5 to 7 X i to 1.5 /1 sporules, which are expelled through a single orifice perforating the raised epidermis. This probably is the spermogonial stage of Diaporthe Halesiae or D. tetrapterae, both of which are found in com pany with it. leUcosTOMA (Pers.) Sacc. On cultivated Prunus domestica and Amygdalus Persica, Dec. 12, 1894 (Nuttall, 1769). EXASPERANS E. & E., Proc. Phila. Acad., 1894, 360. Type habitat: On dead limbs Acer Pennsylvanicum. Feb. 2, 1894, Short Creek, alt. 1,300 ft. (Nuttall. discov. 1366). Stroma buried in the bark, orbicular, about 1 mm. diame ter, 4 to 6-celled (at length one-celled), prolonged above