WEST VIRGINIA GEOLOGICAL SURVEY 43 



S. VULGARE Tode? 



On fallen dead leaves, Short Creek, July 25, 1893 (Nuttall, 

 1137, 120). 



PILACRE Fries. 

 P. GRACILIPES E. & E., Proc. Phila. Acad., 1894, 386. 



TYPE HABITAT: On rotten wood. Short Creek, alt. 1,750 

 ft., Dec. 16, 1893 (Nuttall, discov. 1219, 274). 



Scattered, stem slender, white-pruinose, 3 mm. long, .25 

 to .33 mm. thick. Head hemispherical, olivaceous, about I 

 mm. diameter. Fertile hyphse hyaline, clichotomously 

 branched, 2 to 2.5 /x thick, bearing the conidia laterally. 

 Conidia globose or subglobose, yellow-brown under the 

 microscope, 4 to 5.5 ju diameter. 



Smaller and of a more slender growth than P. Petersii 

 B. & C. 

 P. PETERSII B. & C. 



On Acer sac char urn and Ilex opaca, Feb. 10, 1894 (Nutt- 

 all, 1371). On Magnolia Fraseri, Nov., 1895. 



ISARIA Pers. 

 I. VIRGINIENSIS E. & E. Proc. Phila. Acad., 1893, 465. 



TYPE HABITAT : On the young stroma of Hypoxylon 



rubiginosum? June 30, 1893 (Nuttall, discov. 1109, 95, 102). 



Stromata gregarious, simple, slender-clavate, 1.5 to 2 mm. 



high. Yellowish-white, obtuse and subcapitate at the apex, 



curved, often decumbent, clothed nearly to the base with 



spreading, hyaline, dendroid, 1.5 to 2 /UL branching hyphse 



(sporophores) 40 to 45 x 2.5 /A their tips often toothed and 



bearing i to 4 elliptical or ovate, hyaline 3.5 x 2.5 /* conidia. 



Analogous to /. umbrina Pers (Institale acariforme Fr.), 



but differs in several respects. 



I. CLAVATA Ditm. 



On dead sticks on ground, June, 1893 (Nuttall, mo). 



CERATIUM A. & S. 

 C. HYDNOIDES (Jacq.) Alb. & Schw. 



On rotten log, June 10, 1893 (Nuttall, 976). 



SPOROCYBE Fr. 

 S. RHOIS (B. & C.) Sacc. 



On Rhus copalliiia, March 24, 1894, spores 7.5 x 2 to 2.5 p. 

 On Rhus hirta, March 28, 1894, spores 10 x 2.5 ^ (Nuttall, 



S. AZALEAE (Peck) Sacc. 



On capsules of Rhododendron maximum, Dec. 12. 1893. 



