1918] 



BURT THELEPHORACEAE OF NORTH AMERICA. X 355 



ing up to 60 jLt, not crowded, starting in the dark subhy- 

 menial zone and rising through the hymenium, tapering up- 

 ward from the base; cystidia 12-30x6-18 n, largest when 



Fig. 23 

 H. fulva. 

 Section on left, X 68, from type; section a, X 68, seta, b, and 

 cystidia, c, X 375, from Langlois, aj. 



seated on the dark, subhymenial zone; spores borne 4 to a 

 basidium, hyaline, even, 4^-5x2|-3 /i. 



Fructifications 1x1-1^ cm., becoming laterally confluent for 

 7 cm. or more. 



On rotting fallen limbs of frondose species. In Louisiana 

 and Jamaica — at 4500-5200 ft. altitude in the latter. De- 

 cember. 



H. fulva may be recognized among resupinate species by its 

 fulvous color, not cracking, presence of an intermediate layer 

 bordered on each side by a dark zone, with that on the under 

 side seated directly on the substratum, and by the cystidia. 



Specimens examined: 

 Louisiana: St. Martinville, A. B. Langlois, aj, and a specimen 



comm. by Lloyd Herb., 2422 in part. 

 Jamaica: Cinchona, W. A. d Edna L. Murrill, 645, type, 



comm. by N. Y. Bot. Gard. Herb. ; Blue Hole, W. A. Murrill, 



182^, comm. by N. Y. Bot. Gard. Herb. 



28. H. pinnatifida Burt, n. sp. 



Type : in Lloyd Herb, and Burt Herb. 



Fructifications resupinate, effused, adnate, scattered, some- 

 times confluent, somewhat orbicular, drying between Verona- 

 brown and cinnamon-drab, slightly glaucous, the margin an- 

 tique brown, narrow, rather thick, somewhat velvety ; in struc- 

 ture 120-240 /x thick, composed of a setigerous layer 40-80 n 

 broad and of a loosely interwoven intermediate layer which is 



