1921] The Thelephoraceae of North Carolina 175 



Stevens and Hall report the fungus from numerous places in west- 

 ern North Carolina where it does much damage to neglected orchards. 

 The species is evidently related to C. vagum, and a true hymenium 

 is absent. 



STEREUM 



Plants growing on wood in all species here treated; thin, flat, 

 tough and leathery, or more woody and rigid; petal- or bracket- 

 shaped; in our species usually growing horizontally with a broad 

 attachment directly from the wood or from a more or less extensive 

 resupinate portion; dorsal surface often velvety or hairy, concen- 

 trically zoned and radiately strigose or rugose; hymenium quite 

 smooth and not furnished with sterile spines (setae) projecting among 

 the basidia, but cystidia or paraphyses may be present; basidia simple, 

 spores smooth in our species, nearly white to pale smoky flesh color 

 in a good print. Some species exude a colored juice from the wounded 

 hymenium when in a growing condition. Burt has recently pub- 

 lished his monograph on the American species in Ann. Mo. Bot. 

 Gard. 7: 81. 1920. He records twenty species from North Carolina 

 (including *S. fuscum), two of which we are treating under Peniophora 

 and Corticium. Two of these North Carolina species grow on the 

 ground, both reported from the mountains. See also Massee, Journ. 

 Linn. Soc. 27: 158. 1890. I am under obhgation to Dr. Burt for 

 having determined a number of my plants. For interesting remarks 

 on *S. abietinum Pers. see N. Y. Sta. Mus. Bull. 219, 220, p. 54, con- 

 taining Report of Director for 1918. 1920. 



Key to the Species Treated 



Plant forming small tuberculate bodies like crowded molar 



teeth; hymenium with many warted cystidia S. frustulostwi (4) 



Not as above. 



Hymenium becoming reddish when bruised. 



Growing on frondose wood; surface tawny S. gausapahim (1) 



Growing on frondose wood; surface blackish with rusty 



margin; texture hard and woody when dry S. subpileaium (3) 



Growing on pine; surface pallid S. sanguinolentum (2) 



Hymenium turning dark brown when bruised S. fuscum (10) 



Hymenium not becoming red or brown when bruised (S. 

 subpileatu7n and S. fuscum, in which the hymenium 

 changes color when bruised are included below, as this 

 character is obscure except when quite fresh.) 



