1916] 



BURT THELEPHORACEAE OP NORTH AMERICA. VII 



335 



Fig. 7 

 S. cirratum. 

 h, portion of hymenium show- 

 ing hypha bearing paraphyses 

 and a probasidium; b, spore- 

 bearing organs; n, colored body 

 from deeper portion of hymenial 

 layer; p, two paraphyses; 8, 

 spore. X 640. 



suggestive of ringlets in sectional preparations, which sup- 

 port (3) the hymenial layer 200-300/x thick, with hyphae 

 2-214/A in diameter, notably 

 curved, branched, and loosely 

 interwoven, olive-brown under 

 the microscope, bearing in the 

 lower part of the layer numerous 

 concolorous, globose bodies llfi 

 in diameter, and toward the 

 outer surface hyaline probasidia 

 11a* in diameter also, and termi- 

 nating at the surface in fine, hya- 

 line branches 1/u. in diameter, with 

 recurved or coiled tips; spores 

 simple, hyaline, even, curved, 18 

 X 6/a; spore-bearing organs few- 

 celled, straight, cylindric, about 35-40 X 71/2/1*, differentiating 

 from the probasidia. 



Fructifications 5 cm. long, 1% cm. broad. 



On trunk of living hardwood tree near the base. Cuba. 

 December. Seen but once by the collector. 



S. cirratum has so nearly the color and habit of Hypochnus 

 fuscus that it was a surprise to find the specimen a Septo- 

 hasidium. The color and sinuously divided margin suggest 

 S. Langloisii. The pillars composed of loosely interwoven 

 and curving hyphae are unique and separate this species 

 sharply from all our species of the S. pedicellatum group. 

 The hyphae are too fine and too curving for S. Spongia. 



Specimens examined: 

 Cuba: Omaja, C. J. Humphrey, 2773 (in Mo. Bot. Gard. 



Herb., 15836). 



11. S. Langloisii Patouillard, Soc. Myc. Fr. Bui. 16:54. 

 1900. 



Type : a portion in Burt Herb. 



Fructification resupinate, effused, dry, velutinous, plum- 

 beous when bright colored, but often smoke-gray or pallid 

 mouse-gray, repeatedly divided into many narrow, sinuous 



