[Vol.. 4 



254 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



It is surprising that only tho original collection of C. dryina 

 has been made, for the two portions which are the type and 

 cotype were apparently from a large conspicuous fructifica- 

 tion. C. dryina has as distinguishing characters its thickness, 

 snuff-brown color throughout, velvety surface, absence of cys- 

 tidia, and stratose structure. 



Specimens examined: 

 Alabama: Peters, 709, type and cotype (in Kew Herb, and 



Curtis Herb., 5204, respectively). 



12. C. suffocata (Peck) Massee, Linn. Soc. Bot. Jour. 

 25:138. 1889. 



Corticium' suffocatum Peck, N. Y. State Mus. Rept. 30 : 48. 



1879; Sacc. Syll. Fung. 6 : 621. 1888. 

 Type : in Coll. N. Y. State. 

 Fructification effused, indeterminate, 

 membranaceous, not fleshy, somewhat 

 separable when thick, drying from avel- 

 laneous to tawny olive and Saccardo's 

 umber, the under side and margin 

 usually whitish and mucedinous; hy- 

 menium even; in structure 60-500 n 

 thick, composed of loosely interwoven, 

 usually hyaline, sometimes brownish, 

 more or less incrusted hyphae 3%-6 /* 

 in diameter under the incrustation, not 

 nodose-septate; no cystidia or with 

 cystidia barely distinguishable from immature basidia ; spores 

 snuff-brown in a spore collection, even, 10-12x6-7 /x. 

 Fructification 2-9 cm. long, 1-5 cm. broad. 

 Common on under side of coniferous boards and limbs lying 

 on the ground, rare on frondose species. Canada to Louisi- 

 ana and westward to Vancouver Island and Washington. May 

 to January. 



This species bears some resemblance to C. cerehella and 

 C. arida, approaching the former in its separable tendency 

 when thick and the latter in general habit, coloration, dry 

 structure, and loose arrangement of its hyphae. It is distin- 



Fig. 12 



C, suffocata. 



Incrusted hyphae, spores. 

 X 665. 



