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 eccentric; 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, H56 (in N. Y. Bot. Gard. 



Herb, and in Mo. Bot. Gard. Herb., 56307). 



13. S. pergamenum Berk. & Curtis, Grevillea 1: 161. 1873; 

 Sacc. Syll. Fung. 6: 552. 1888; Massee, Linn. Soc. Bot. Jour. 

 27: 161. 1890; Lloyd, Myc. Writ. 4. Stip. Stereums, 27. text /. 

 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 ju thick, composed 

 of densely and longitudinally arranged hyaline 

 hyphae 3 \x in diameter; flexuous, clavate, curved 

 gloeocystidia, 50X6 n, extend into the hymenium 

 but do not rise to its surface; cystidia none; 

 spores hyaline, even, slightly flattened on one 

 side, 4-4| X3-3 /*. 



Fructifications l|-4 cm. high, 8 mm.-3 cm. 

 in diameter; stem 2-10 mm. long, 1-3 mm. in 

 diameter. 



On stumps or buried wood, perhaps rarely 

 on the ground. Ohio and North Carolina to Mexico and in 

 the West Indies. September to January. 



Fig. 4. 



S. pergamenum. 



Gloeocystidia 



X 665. 



