162 Journal of the Mitchell Society [February 



4302. On rotten, decorticated oak wood, May 9, 1920. Spores white, smooth, 

 very long-elUptic, some bent, 2.5-3.7 X 12-16^. Cystidia thickly en- 

 crusted, slender, 4ju thick and up to 60ai long. 



5. Peniophora filamentosa (B. & C.) Burt. Ms. 



Plate 32 



Entirely effused and creeping irregularly over rotting bark or 

 wood; margin distinct but irregular and byssoid when growing, in 

 places connected with extensive ropy strands; surface when mature 

 varying from dull buffy tan to chamois or even a deeper cinnamon 

 buff at times, often with an olive tint, especially in youth; surface 

 even, but responding to the substratum, having the appearance of 

 chamois skin. Structure in section up to 350^ thick, composed of 

 loosely woven, rather deUcate, brownish hyphae, 3-4.5[jl thick, with- 

 out clamp connections, most of them heavily encrusted with crystals, 

 some not; cystidia brownish, encrusted throughout or in places, 

 about 6. Six thick including crystals and projecting ll-30ix. They are 

 hardly more than protruding hyphae and intergrade with them com- 

 pletely. 



Basidia 4-spored, 5-6[x thick. Spores not found in our collection, 

 said by Massee to be oblong-elhpsoid, 3 x 6[jl. 

 4245. On decorticated, rotten frondose wood, April 15, 1920. 

 4264. On rotten deciduous wood, April 17, 1920. 

 4607. On living and dead dogwood, July 31, 1920. 



6. Peniophora cinerea (Pers.) Cooke. 



Plate 32 



Extensively effused and combining into elongated irregular 

 patches up to 10 or more cm. long at times, closely adnate and not 

 removable, the rather definite margin not byssoid; in some fully 

 developed specimens becoming thicker, almost as in Aleurodiscus; 

 when damp a deep blackish brown with faint purplish tint, the sub- 

 stance rather waxy; when dry a much lighter grayish-brown, about 

 ash color and cracking imperfectly into small irregular areas, the 

 crack extending to the substratum. Surface glabrous, moderately 

 nodulated both when wet and dry, nodules structural and not due 

 to irregularities of the wood, although any irregularities also show. 

 Entire thickness about 55-75a. 



