1920] 
BURT—THELEPHORACEAE OF NORTH AMERICA. XII 101 
pilei and the stem central; the original collections have some 
specimens with pileus longer on one side than the other and 
stem eccentrie; in more recent gatherings some specimens are 
even flabelliform. S. tenerrimum appears to be a distinct 
species. 
Specimens examined: 
New York: Croghan, C. H. Peck (in N. Y. State Mus. Herb.). 
South Carolina: Society Hill, H. W. Ravenel, type (in Curtis 
Herb., 5029, and in Kew Herb.). 
Wisconsin: Afton, R. A. Harper. 
Cuba: Havana Province, Huo Leon, 1456 (in N. Y. Bot. Gard. 
Herb. and in Mo. Bot. Gard. Herb., 56307). 
I3. S. pergamenum Berk. & Curtis, Grevillea 1: 161. 1873; 
Saec. Syll. Fung. 6: 552. 1888; Massee, Linn. Soc. Bot. Jour. 
27:161. 1890; Lloyd, Myc. Writ. 4. Stip. Stereums, 27. teat f. 
545. 1913. Plate 2, fig. 12. 
An Stereum nitidulum Berkeley, Hooker's London Jour. Bot. 
2: 638. 1843? 
Type: type distribution in Ravenel, Fungi Car. 3: 25. 
Fructifications somewhat cespitose and grown together, stip- 
itate; pileus coriaceous, infundibuliform, sometimes split and 
petaloid, minutely lineate, drying hazel, obscurely 
zoned, the margin thin, often toothed or laciniate; 
stem cylindric, drying pinkish buff, very minutely 
tomentose; hymenium drying pinkish buff, gla- 
brous; pileus in section 500 y thick, composed 
of densely and longitudinally arranged hyaline 
hyphae 3 y in diameter; flexuous, clavate, curved 
gloeocystidia, 50X6 u, extend into the hymenium 
but do not rise to its surface; cystidia none; 
spores hyaline, even, slightly flattened on one 
side, 4-43 X3-31 y. 
Fructifications 13-4 cm. high, 8 mm.-3 cm. : Fig. 4. 
" r j E se : . pergamenum. 
in diameter; stem 2-10 mm. long, 1-3 mm. in aiki 
diameter. x 665. 
On stumps or buried wood, perhaps rarely 
on the ground. Ohio and North Carolina to Mexico and in 
the West Indies. September to January. 
