[Voi,. 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; Sacc. 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, 

 cylindric, 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 m thick, composed of longitudinally 

 arranged, thin-walled hyaline hyphae 3 m in 

 diameter, densely crowded together; hymenium 

 white, setulose with hyaline hairs under a lens; 

 Fig. 3. cystidia hair-like, not incrusted, cylindric, obtuse, 



Cystidium "~^ M in diameter, protruding 20-60 m; spores 

 basidia, and hyaline, even, 4-5X2J-3 /*. 



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 pi. 

 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 pi. 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 



