1920] 
BURT—THELEPHORACEAE OF NORTH AMERICA. XII 167 
Syll. Fung. 6: 561. 1888; Massee, Linn. Soc. Bot. Jour. 27: 
172. 1890; Lloyd, Myc. Writ. 4. Letter 46:3. 1913. 
Plate 5, fig. 47. 
Helvella versicolor Swartz, Prodr. 149. 1788.—Thelephora 
versicolor Swartz, Fl. Ind. Oc. 3: 1934. 1806; Fries, Syst. 
Myc. 1: 438. 1821.—Stereum radians Fries, R. Soc. Sci. Up- 
sal. Actis III. 1: 110. 1851; Sacc. Syll. Fung. 6: 573. 1888; 
Massee, Linn. Soc. Bot. Jour. 27: 188. pl.7.f.5. 1900. 
Illustrations: Berkeley, loc. cit.; Massee, loc. cit. 
Type: authentie specimen in Herb. of Brit. Mus. according 
to Berkeley. 
Fructification coriaceous-rigid, very thin, sometimes buff- 
yellow, clothed with silky, villous fascicles all lying in a radiat- 
ing direction, becoming glabrous and shining and minutely 
radially ridged or lineate, wood-brown to cinnamon-brown, the 
margin entire, not complicate; in structure 300-400 u thick, 
composed of densely, longitudinally arranged hyphae 3-33 » in 
diameter; hymenium even, glabrous, cream-color to avellaneous; 
no colored conducting organs, gloeocystidia, nor cystidia; spores 
hyaline, even, 4-5X 2-25 y. 
Fructifications 1-2} em. broad, 13-4 em. long, often laterally 
confluent. 
On dead wood. Florida, West Indies, Mexico, Dutch Guiana. 
September to February. Probably common in Jamaica. 
S. versicolor is a species intermediate between S. lobatum and 
S. rameale; its fructifications are smaller than those of S. lobatum, 
thinner, more completely glabrous at length, with margin not 
normally lobed, and usually retaining attachment by a narrow, 
resupinate side of the pileus as well as by the umbo, in which 
respect there is resemblance to the middle stage of development 
of S. fasciatum; the radial arrangement of the hairs and villous 
fascicles on the upper surface of the pileus is a highly distinctive 
character, as first pointed out by Berkeley. The coloration and 
hairy covering of fructifications of S. versicolor are somewhat 
similar to these characters in S. rameale, but the fructifications 
of the former are not lobed and folded together laterally and 
crisped nor as slender as those of S. rameale, as pointed out by 
Fries in his description of his S. radians. S. versicolor was 
formerly confused with S. fasciatum, especially in American 
