[Vor. 7 
98 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
Thelephora diaphana Schweinitz in Berk. € Curtis, Acad. Nat. 
Sci. Phila. Jour. 2: 278. 1853.—T. Willeyi Clinton in Peck, 
N. Y. State Mus. Rept. 26: 71. 1874; Sace. Syll. Fung. 6: 524. 
1888.—An T. Sullivantii Montagne, Syll. Crypt. 176. 1856? 
Type : in Herb. Schweinitz, in Curtis Herb., and in Kew Herb. 
Fructifications coriaceous, thin, deeply infundibuliform, some- 
times deeply split, white, drying diaphanous, sericeous, fibril- 
lose, striate, sometimes with slightly elevated 
ridges, sometimes obscurely zoned, the margin 
thin, entire or laciniately toothed; stem slender, 
cylindrie, more or less clothed with white matted 
down which is usually present at the base and 
binds the earth together in a ball; pileus of type 
in section 200 y thick, composed of longitudinally 
arranged, thin-walled hyaline hyphae 3 4 in 
diameter, densely crowded together; hymenium 
white, setulose with hyaline hairs under a lens; 
cystidia hair-like, not incrusted, cylindric, obtuse, 
6-9 u in diameter, protruding 20-60 wu; spores 
basidia, and hyaline, even, 4-5 X23-3 y. 
spores, X 665. Fructifications 2-4 cm. high, 8 mm.-2 cm. in 
diameter; stem 1-3 mm. in diameter. 
On the ground in moist woods of frondose species. New 
York to Missouri, and in Alabama, Washington, and California. 
S. diaphanum, as collected by Schweinitz and shown in pl. 
2, fig. 8, differs from S. aurantiacum in absence of bright yellow 
color, in shorter spores, and in stem and ground at base of stem 
being merely white-downy. In western New York, this species 
attains a more luxuriant growth than the small specimens col- 
lected by Schweinitz, has a larger and rather thicker pileus and 
thicker stem as shown in pl. 2, fig. 9; such larger specimens 
were published as Thelephora Willeyi, but the intergradations 
with S. diaphanum are so numerous and close that it should be 
kept with the latter in my opinion. 
Specimens examined: 
New York: Buffalo, Clinton, type of Thelephora Willeyi (in N. 
Y. State Mus. Herb.); Chappaqua, Mrs. C. E. Ryder & 
Mrs. W. A. Murrill (in N. Y. Bot. Gard. Herb. and Mo. 
Bot. Gard. Herb., 56289); Freeville, V. B. Walker, 15 
99 
