1916] 



BURT THELEPHORACEAE OF NORTH AMERICA VI 219 



Type : in Coll. N. Y. State. 



Fructification effused, thin, membranaceous, separable 

 from the substratum, granular, sepia, the margin somewhat 

 radiate, concolorous or nearly so; in struc- 

 ture 200-400/x thick, composed of very loosely 

 interwoven, thin-walled, occasionally nodose- 

 septate, hyphae 2%-4/a in diameter, yellow- 

 ish under the microscope, forming near the j,. ^ 

 substratum some rope-like mycelial strands h. granulosus. 

 up to 15fi in diameter; spores concolorous t^^^dxeio^^^ 

 with the hyphae, angular-subglobose, acule- 

 ate, the body about 6fi in diameter; KHO solution produces 

 no noteworthy color change in sections. 



Fructifications 2-4 cm. long, 1-2 cm. broad. 



On rotten bark and wood of frondose species. Massachu- 

 setts to New Jersey and Ohio. September to November. 

 Rare. 



H. granulosus is very closely related to H. coriarius and 

 is distinguished from it by uniform color of the whole sur- 

 face, while H. coriarius has the margin ochraceous-tawny. 

 The lack of noteworthy color change by KHO solution is the 

 only additional feature of difference for separating H, gran- 

 ulosus from H. coriarius. The specific name tahacina of 

 Cooke and Ellis has priority, but is not now available be- 

 cause Bresadola has already used the name Hypochnus to- 

 bacinus for a valid species. 



Specimens examined: >fct 



Exsiccati : Ellis, N. Am. Fungi, 42i, under the name Zygo- 



desmus chlorochaites, 

 Hungary: A. Kmet, authentic specimen of H, elaeodes from 



Bresadola, probably a portion of the type. 

 Massachusetts: Newton, TF. G. Farlow; Mt. Tom, H, W. 



HarJcness, type (in Coll. N. Y. State). 

 New York: Albany, H. D. House d J. Ruhinger (in Mo. 



Bot. Gard. Herb., 8733) ; Karner, H, D. House (in Mo. 



Bot. Gard. Herb., 44731) ; Alcove, C. L. Shear, 1316, in 



part. 



