J 





[Vol. 11 

 32 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



petioles, and on rotting wood. West Virginia, Arkansas, Louisi- 

 ana, and the West Indies. July to December. 



A. muscicolum has so many tough, stellate organs that it is 

 not easy to cut sections free hand which are thin enough to show 

 clearly the details of the hymenium; it differs in this respect 

 from A. cervicolor and also by the very numerous, branched rays 

 and the thicker-walled spores covered with stouter and more 

 numerous spines. 



Specimens examined : 

 West Virginia: Eglon, C. G. Lloyd, 1457 (in Mo. Bot. Gard. 



Herb., 55611). 

 Louisiana: Dr. Hale (under the name Stereum Halei in Kew 



Herb, and Curtis Herb., 3660); St. Martinville, A. B. Langlois, 



2708. 

 Arkansas: Fordyce, C. J. Humphrey , 2580 (in Mo. Bot. Gard. 



Herb., 11952). 

 Cuba: C. Wright, 258, type of Hymenochaete muscicola (in Kew 



Herb, and Curtis Herb.); Ceballos, C. J. Humphrey, 2579 



(in Mo. Bot. Gard. Herb., 14841); Habana Province, Fecha, 



F. S. Earle, HI. 

 Grenada: Grand Etang, R. Thaxter, coram, by W. G. Farlow, 15. 



3. A. bicolor Ellis & Everhart, Acad. Nat. Sci. Philadelphia 

 Proc. 1893: 441. 1893; Sacc. Syll. Fung. 11: 128. 1895. 



Type: in N. Y. Bot. Gard. Herb., U. S. Dept. Agr. Herb., 

 and Burt Herb. 



Effused, thin, avellaneous when fresh, the hymenium becoming 

 whitish in the herbarium, the margin thin, cobwebby; in structure 

 in section 200-300 \l thick, composed of loosely arranged, hyaline 

 hyphae 2-2J^ \l in diameter and of rather scattered not crowded 

 colored, stellate organs with unbranched rays 45-120 \l long, 

 33^-4J^ \i in diameter; no cystidia; basidia with 4 sterigmata; 

 spores white in a spore collection, even, globose, apiculate at 

 the base, 5-7 y. in diameter. 



Fructifications 1-6 cm. long, 1-4 cm. broad. 



On rotten wood of both frondose and coniferous species but 

 more abundant on the latter. New York to Louisiana and west- 

 ward to British Columbia. August to November. 



