1926] 



BURT — THELEPHORACEAE OF NORTH AMERICA. XV 275 



when moistened, becoming vinaceous-brown in the herbarium, 

 even; in section 500-GOO [x thick, with a layer 300 ^ broad towards 

 the substratum composed of longitudinally and densely arranged 

 hyphae, with the outer walls so gelatinously modified that only 

 the stained lumen and contents of each hypha are now visible 

 as to outline; hymenial portion zonate, composed of 2 layers, each 

 containing numerous curved, slender, flexuous, deeply staining 

 organs 30-75 X 3-4 [i, which may be elongated gloeocystidia or 

 perhaps basidia of the transversely septate kind ; a few scattered, 

 brownish spherical organs resembling gloeocystidia of Peniophora 

 serialis; spores hyaline, even, 12-13 X 4-5 [x, few seen and may 

 not belong. 



On decaying logs. South Carolina. 



In the original description it was stated that there is a thin, 

 tomentose subiculum composed of interwoven threads. If so, 

 it is not retained in my mounts of sections from the specimens 

 in Kew and Farlow Herbaria made 26 and 24 years ago re- 

 spectively. I did not decide from the type specimens whether 

 this species is a Cortidum or Stereum having elongated gloeo- 

 cystidia or an Auricularia with transversely septate basidia. I 

 noted the presence of the word "Auricularia^' on the specimen in 

 Kew Herbarium but the species was published as a Cortidum. 

 My thin Cortidum argentatum is of too different structure to be 

 a synonym of this. While writing this account it occurs to me 

 that the specimens distributed in Ellis, N. Am. Fungi, 1109, 

 under the name Phlebia spilomea, should have been compared 

 with a type of C. venosum. 



Specimens examined: 

 South Carolina: Black Oak, H. W. Ravenel, 1321, type (in Kew 



Herb, and in Farlow Herb.). 



85. C. ochrofarctum Burt, n. sp. 



Type: in Mo. Bot. Gard. Herb. 



Fructifications effused, closely adnate, very thin, h3T)ochnoid, 

 tilleul-buff in the herbarium, even, not shining, not cracked, the 

 margin whitish, thinning out, with hyphae interwoven; in section 

 100-150 (X thick, not colored, composed of hyphae and numerous 

 scattered, spherical, ochraceous gloeocystidia; hyphae rather 



