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BURT—THELEPHORACEAE OF NORTH AMERICA. XII 179 
50. S. conicum Burt, n. sp. Plate 5, fig. 51. 
Type: in Farlow Herb. and in Mo. Bot. Gard. Herb. 
Pileus coriaceous, small, rather thick, conical, sessile, attached 
by the vertex, villose, with some specimens whitish to pale 
olive-buff and others between wood-brown and Sayal-brown; 
intermediate layer not bordered by a dark zone, nearly colorless, 
containing many thick-walled and somewhat incrusted hyphal 
ends 15-25 X6 yu but no colored conducting organs; hymenium 
even, drab, without cystidia; spores hyaline, even, 4-45 X23 +. 
Pileus 2-4 mm. in diameter, 2-4 mm. high, about 2-3 mm. 
thick. 
Singly on small, dead, frondose twigs. Cuba. 
If carelessly glanced at, specimens of this species might be 
referred to S. ochraceo-flavum, but in S. conicum each of the eight 
fructifications which I have seen is truly conical, pendant, and 
attached by its vertex, while the pilei of S. ochraceo-flavum, S. 
ochroleucum, etc., are reflexed; the hymenium of S. conicum is 
glabrous, while that of S. ochraceo-flavum contains even-walled, 
non-incrusted cystidia 20-25 X4-6 u, protruding 15 y. S. coni- 
cum is noteworthy by the very numerous thick-walled and some- 
what incrusted hyphal ends which are present in its intermediate 
layer. On the hymenial side these bodies curve towards the 
hymenium but do not reach its surface; on the opposite side 
they eurve to the upper surface of the pileus and protrude as 
incrusted hairs forming a part of the villose covering of the 
pileus, a structural feature suggestive of Cyphella. The speci- 
mens of S. conicum were collected by Charles Wright during 
his last trip to Cuba in about 1860 but were not sent to Berkeley 
and Curtis for study. 
Specimens examined: 
Cuba: Fungi Cubensis Wrightiani, 842, C. Wright, type, comm. 
by W. G. Farlow (in Mo. Bot. Garc. Herb., 43906 and in 
Farlow Herb.). 
51. S. vibrans Berk. & Curtis, Linn. Soc. Bot. Jour. 1o: 332. 
1868; Sacc. Syll. Fung. 6:577. 1888. Plate 5, fig. 52. 
An Stereum cupulatum Patouillard in Duss, Fl. Crypt. Antilles 
Fr. 233. 1904? 
Type: in Curtis Herb. and Kew Herb. 
