1916] 



BURT THELEPHORACEAE OF NORTH AMERICA. VII 331 



This species is closely related to S. pseudopedicellatum 

 but is more deeply colored, has more opaque hyphae, and 

 smaller spores and spore-bearing organs. No lateral pro- 

 tuberances or papillae have been observed on the latter. 



Specimens examined: 

 Alabama: Montgomery, R. P. Burke, two collections (in 



Mo. Bot. Gard. Herb., 20421, type, and 20693). 



6. S. sublilacinum (Ellis & Ev.) Burt, n. comb. 



Thelephora sublilacina Ellis & Ev. State Univ. Iowa, Lab. 

 Nat. Sci. Bui. 13:67. 1896; Sacc. Syll. Fung. 14:214. 1900. 



Type : in N. Y. Bot. Gard. Herb. 



Fructification resupinate, effused, coriaceous, dry, not sep- 

 arable from the substratum, glabrous, shining, olive-brown, 

 darkening to dark neutral gray ; in structure 3-layered, with 

 (1) a layer next to the substratum, 40-60/* thick, of closely 

 crowded, longitudinally arranged hyphae concolorous with 

 the fructification, 4-4y2/>i in diameter, which form (2) a layer 

 of pillars 40-60/x in diameter, about 2-4 to a millimeter, whose 

 hyphae spread apart at the outer end and form and support 

 (3) the hymenial crust about 60/a thick, densely interwoven 

 throughout, with even, thick-walled, concolorous hyphae 3- 

 31/2/* in diameter on the under side, 2/* in diameter, nearly 

 hyaline, and densely, longitudinally interwoven at the sur- 

 face; probasidia, spores or other organs not present in the 

 type. 



Fructification about % cm. in diameter, % mm. thick. 



On living branches. Nicaragua. 



The type specimen of this species, when viewed from above, 

 agrees so closely with the cotype of S. Spongia in color and 

 habit that one is strongly disposed to regard the two speci- 

 mens as of the same species. 8. sublilacinum has, however, 

 the coarser hyphae, a three-layered structure, and distinct 

 pillars. It seems best to regard it as a distinct species, at 

 least until fertile specimens define the species more definitely. 



Specimens examined: 

 Nicaragua: C. L. Smith, 108, type (in N. Y. Bot. Gard. 



Herb.). 



