1926] 



BURT THELEPHORACEAE OF NORTH AMERICA. XV 323 



H. subviolaceus Peck, N. Y. State Mus. Rept. 47: 151. 1894; 

 Sacc. Syll. Fung. 11 : 130. 1895. 



Type: in N. Y. State Mus. Herb, and Mo. Bot. Gard. Herb. 



Fructifications effused, closely adnate, very thin, violet-gray 

 at first, becoming drab in the herbarium, even, velutinous, the 

 margin whitish at first, fibrillose; in section 90 (j. thick, colored, 

 composed of suberect and interwoven, densely arranged, thin- 

 walled hyphae 2 \l in diameter, some hyaline and many colored 

 and bushy-branched; spores nearly hyaline, globose, rough or 

 minutely aculeate, 4-4^ y. in diameter. 



Fructification 2J^ cm. long, \ l /2 cm. wide, broken off at both 

 ends and on one side. 



On badly decayed coniferous wood. Canada. September. 



The aspect of H. subviolaceus is not hypochnoid but rather that 

 of a very thin Coniophora. The occurrence on decorticated conif- 

 erous wood, drab color, system of bushy-branched, colored tissue 

 in addition to, and somewhat masking, the usual hyphae, and the 

 small nearly hyaline spores should aid in recognition of this 

 species. 



Specimens examined : 

 Canada: /. Macoun, type (in N. Y. State Mus. Herb.), and comm. 



by N. Y. State Mus. Herb., T 34 (in Mo. Bot. Gard. Herb.). 



H. umbrinus (Fr.) Quelet, Fl. Myc. 2. 1888. 



The above combination has priority over that in Mo. Bot. 

 Gard. Ann. 3: 213. 1916, according to Wakefield, Brit. Myc. 

 Soc. Trans. 6: 132. 1919. I have not access to a copy of the 

 Quelet. 



Upon reexamination of the sections in my preparation from the 

 type of Thelephora arachnoidea Berk. & Br., I think that this is a 

 Septobasidium as stated by Bresadola, Ann. Myc. 14: 241. This 

 species should therefore be struck out in my work where given 

 as a synonym of H. umbrinus. 



Caldesiella viridis (Alb. & Schw.) Pat. Essai Taxon. 120. 1900; 

 Rea, Brit. Basid. 651. 1922; Bourdot & Galzin, Soc. Myc. Fr. 

 Bui. 40: 128. 1924. Odontia viridis (Alb. & Schw.) Quelet, Fl. 

 Myc. 434. 1888; Bresadola, I. R. Accad. Agiati Atti III. 3: 97. 



