1924] 



BURT THE THELEPHORACEAE OF NORTH AMERICA. XIII 3 



Pileus coriaceous, usually flabelliform, drying pinkish buff, 

 sometimes stained with adhering algae, stipitate or sessile, the 

 upper surface spongy by the heavy coat of tomentum, the 

 margin entire or nearly so; hymenium glabrous, marked with 

 radiating, narrow, branched ribs, usually free from or with few 

 warts; pileus in structure consisting of an intermediate layer, up 

 to 150 (a thick, composed of densely longitudinally arranged 

 hyaline hyphae about 3 [l in diameter, of a very much broader 

 layer forming the tomentum of the upper surface of the pileus, 

 and of a hymenial layer containing numerous, flexuous, fusoid 

 gloeocystidia up to 60 X 8-12 n; basidia simple, with 4 sterigmata; 

 spores hyaline, even, 3-4 X 3 ^; no cystidia found; stem spongy- 

 tomentose but often absent. 

 Pileus about 2-8 cm. in diameter. 



On rotten wood. Mexico, West Indies, South America, Philip- 

 pine Islands, Australia, and the East Indies. The usual species. 

 Cladoderris infundibuliformis of the Philippines and the East 

 Indies differs from C. dendritica in having the upper side much 

 less tomentose, hazel or kaiser-brown in color, radially ridged 

 and with the ridges radially squamulose, and the hymenium 

 containing some incrusted cystidia. 



Specimens examined: 

 Mexico: Orizaba, W. A. & E. L. Murrill, 775 (in N. Y. Bot. 



Gard. Herb., 775, and Mo. Bot. Gard. Herb., 54611). 

 Cuba: C. Wright, 279 (in Curtis Herb.); Alto Cedro, Earle & 

 Murrill, 448, comm. by N. Y. Bot. Gard. Herb.; Baracoa, 

 L. M. Underwood & F. S. Earle, 1217, comm. by N. Y. Bot. 

 Gard. Herb., 1189 (in N. Y. Bot. Gard. Herb.) ; Fecha, Habana, 

 Cooke & Home, comm. by Estacion Central Agronomica, 137; 

 Oriente, /. A, Shafer, 8748 (in Mo. Bot. Gard. Herb., 62171, 

 and N. Y. Bot. Gard. Herb.); Pinar del Rio Province, Earle 

 & Murrill, 225, comm. by N. Y. Bot. Gard. Herb. 

 Porto Rico: on dead cane, Rio Piedras, /. R. Johnston & J. A. 

 Stevenson, 1110 (in Mo. Bot. Gard. Herb., 55091). 



Jamaica: , 881 (in N. Y. Bot. Gard. Herb., and Mo. 



Bot. Gard. Herb., 62172); Castleton Gardens, W. Harris, 

 128, comm. by N. Y. Bot. Gard. Herb, under the herbarium 

 name Stereum Harrisii Mass.; Moore Town, W. A, & E. L. 

 Murrill, 186, comm. by N. Y. Bot. Gard. Herb. 



