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Rh erumpent in a close fascicle, closely surrounded by the ruptured epidermis. Asci slender, 55 to 60 x 6 to 7 ц, short-stipitate. Sporidia sub-biseriate, fusoid-oblong, hyaline, 2 to 4-nucleate, becoming uniseptate and slightly constricted, straight, 12 to 15 x 2.5 to 3 ц. There is no distinct circumscribing line around the stroma, but the inner surface of the bark is uniformly blackened. (Chorostate) Tetrapterae E. & E., Proc. Phila. Acad., 33g (1894). Type habitat: On dead limbs Mohrodendron Carolinum, May. 1894 (Nuttall, discov. 1542). Stroma cortical, 1.5 to 2 mm. diameter, surrounded by a black line which does not penetrate the wood. Perithecia 4 to 12. circinate, 5 mm. diameter, sunk to the wood and leaving their impress on its surface but not penetrating it. Ostiola obtusely rounded and perforated, erumpent in a com pact fascicle and closely surrounded by the ruptured epi dermis. Asci clavate-cylindrical, 75 to 80 x 12 Sporidia biseriate. oblong-fusoid, slightly curved, subobtuse, hyaline, uniseptate and constricted at the s61it11n1, each cell with a large nucleus, 9 to 22 x 5 to 7 ц. Differs from D. Halesiae E. & E., in its smaller perithecia. not sunk in the wood, and its much larger sporidia. (Chorostate) Aceris Fckl. On Acer saccharinum, L., Jan. 26, 1894 (Nuttall, 1739) Hydrangeae E. & E., Field Mus. Bot., 1 :14o (1896). Type habitat: On dead stems Hydrangea arborescens, Nov., 1894 (Nuttall, discov. 1756, 641). Perithecia scattered, ovate-globose, 350 to 380 ц diameter, sunk in the wood, which is not at all discolored. Ostiola stout, erumpent, short-cylindrical, or conic-cylindrical, the apex papilliform. Asci (p. sp.) oblong-cylindrical, 50 to 60 x 8 ц, 8-spored, obscurely paraphysate. Sporidia biseriate, oblong-elliptical, hyaline, uniseptate, slightly constructed, 12 to 15 x 3 to 4 ц, ends subacute. This may be the Sphaeria spoken of by Schweinitz as found by him on limbs of Hydrangea, in company with his Sphaeria (Teichospora) Hydrangeae. (Chorostate) cercophora (Ellis.) Sacc. On Ilex opaca, Dec. 23, 1893, March 15, 1894 (Nuttall, 1333)(Chorostate) oncostoma (Du B.) Fckl. On Robinia Pseudacacia, April 7. 1894. Spores 17 to 19 x 4 to 5 ¡i (Nuttall, 1446). (Chorostate) sociata (C. & E.) Sacc. On Benzoin Benzoin, April 13, 1895. Helminthospores 75 to 100 x 15 /1. 7-septate (Nuttall, 1798).