1916] 



BURT THELEPHORACEAE OF NORTH AMERICA VI 231 



On decaying wood. New Hampshire to Maryland. Sep- 

 tember to January. Probably frequent. 



H. atroruher is one of our finest species of the genus. It 

 is conspicuous by the dark red central region bordered by 

 a melleus (in the sense of 'Chromotaxia') margin. This 

 margin was not noticed by Peck in the original description 

 but is present on one side of his type. Specimens of H. 

 atroruher lacking the characteristic melleus margin may be 

 distinguished from H. riihiginosus by the coarser, darker- 

 colored, thicker-walled hyphae of the former species. 



Specimens examined: 

 Exsiccati: Ellis, N. Am. Fungi, 1390, under the name Zy- 



godesmus atroruher Pk. 

 New Hampshire : Chocorua, W. G. Farlow, 10, and collection 



of Sept., 1915 (in Farlow Herb, and in Mo. Bot. Gard. 



Herb., 8931). 

 Massachusetts: Mt. Tom, H. W. Harhness, type of Zygodes- 



mus atroruher Pk. (in Coll. N. Y. State) ; Magnolia, W. G. 



Farlou>, h; Sharon, A. P. D. Piguet, comm. by W. G. Far- 

 low, 21. 

 New Jersey: Newfield, J. B. Ellis, in Ellis, N. Am. Fungi, 



1390. 

 Maryland: Takoma Park, C. L. Shear, 902, 1086. 



21. H. subvinosus Burt, n. sp. 



Type: in Burt Herb. 



Fructification effused, thin, adnate, becom- 

 ing granular, tomentose, vinaceous-brown, 

 but becoming Eood's brown in the herba- 

 rium; in structure 250-300/x thick, composed 

 of suberect, branching, loosely interwoven, 

 thin-walled hyphae 4-5/x in diameter, not no- Fig. 21 



dose-septate, colored near the substratum SporWphax640. 

 and hyaline near the basidia ; basidia with 4 

 sessile spores; spores umber, angular-subglobose, aculeate, 

 the body 5-6/* in diameter, or 5-6 X 4-5/*; no noteworthy 

 color change by KHO solution. 



Fructification 4 cm. long, 2I/2 cm. broad. 



