174 Journal of the Mitchell Society [February 



4230. On bark of a dead poplar limb, April 4, 1920. 



4236. On inside of decaying poplar log, April 15, 1920. Spores pointed, sub- 

 elliptic, 3.7-4.5 X 8.5-11. 5m. 

 4259. On bark and wood of dead pine, April 15, 1920. 

 4276. On dead pine wood, April 20, 1920. 



8. Corticium subcoronatum v. Hoehn. and Litsch. 



Adnate, thin, pulverulent-looking, so loosely woven as to be 

 lacunate under a hand lens, when wet slate colored, drying to whitish 

 gray; margin indeterminate. Structure in section after application 

 of KOH about QO^x thick, made up of extremely loosely packed, much 

 branched, clamp-connected, hyaline hyphae 5.5-7.4^ thick; no de- 

 finite hymenial layer present but basidia are borne on the tips of 

 much branched hyphae at outer surface and the large number of 

 collapsed basidia give the appearance of a layer of crystals; basidia 

 6.6-7.4 X 12.5[i,, with four sterigmata and not distinguishable from 

 hyphae except for the presence of sterigmata. 



Microscopic appearance like C. botryosum, but differing in sec- 

 tion in that the present plant has more delicate hyphae which are 

 not yellowish at base as in C. botryosum, and has clamp connections 

 at septae and smaller spores than the latter. See Wakefield in 

 Trans. Brit. Myc. Soc. 4: 118. 1913. 

 4271. On bark of very rotten oak log, near Meeting of the Waters, April 18, 1920. 



9. Corticium Stevensii Burt. 



While we have not found this in Chapel Hill, its frequent presence 

 in the mountain region of this state and its importance as a parasite 

 of apples, pears, and quinces leads us to include it here. We adapt 

 the following condensed description from Stevens and Hall (Ann. 

 Myc. 7: 49. 1909, as Hypochfius ochroleucus) and from Burt ( 1. c, 

 p. 125) : 



Fructification forming a felty, dull pinkish buff, easily i-emovable 

 membrane on the under side of the leaf; hyphae 4.5-7.5[x thick, not 

 nodose septate, bearing the basidia scattered along them on short 

 lateral branches; basidia 7-8 x \\^, with 4 sterigmata; spores 

 hyahne, flattened or slightly concave on one side, 3-4 x 8-11^. 



The vegetative mycelium lives on the twigs and forms there 

 chestnut-brown Sclerotia from which rhizomorphic strands run to 

 the leaves and are dissipated into the fructifying hyphae. 



