BURT—THELEPHORACEAE OF NORTH AMERICA. XII 213 
Idaho: Kaniksu National Forest, Priest River, J. R. Weir, 4, 
29, 58, 74, 82, and 102 (the last in Mo. Bot. Gard. Herb., 
16029). 
Canadian Rocky Mts.: Lake Louise, J. Macoun, 3; Lake 
O'Hara, J. Macoun, ?; Papiston Creek, J. Macoun, 8. 
British Columbia: Yoho Valley, J. Macoun, 5. 
Washington: Mt. Paddo, W. N. Suksdorf, 843, 844. 
Oregon: Sumpter, G. G. Hedgcock, comm. by C. J. Humphrey, 
2570 (in Mo. Bot. Gard. Herb., 20460). 
69. S. subpileatum Berk. & Curtis, Hooker's Jour. Bot. 1: 
238. 1849; Grevillea 1: 163. 1873; Sacc. Syll. Fung. 6: 585. 
1888; Massee, Linn. Soc. Bot. Jour. 27: 192. 1890; Long, Jour. 
Agr. Res. 5: 421. pl. 41. 1915. . Plate 6, fig. 69. 
Illustrations: Jour. Agr. Res. 5: pl. 41. 
Type: in Curtis Herb. and Kew Herb. 
Fructifications thick, corky, drying rigid, very hard, resupi- 
nate oreffuso-reflexed, sometimes laterally confluent and attached 
by the umbos, with upper surface concentrically sulcate, some- 
what zonate, tomentose, cinnamon-brown, the margin entire; 
hymenium even, light buff; in structure 800-1200 u thick, with 
the intermediate layer bordered and 
connected with the tomentum by a 
denser and darker crust and bearing — (MM ITA 
on the opposite side a hymenial id | my 
layer which becomes multizonate; 
hyphae of intermediate layer col- 
ored, thick-walled, stiff, 3-33 y in 
diameter, densely and longitudi- 
nally arranged; cystidia incrusted, 
cylindric, 30-36 X 7 u, becoming col- 
ored where buried in older zones of 
the hymenium, at first sometimes 
slightly aculeate; spores hyaline, 
even, 4-53 y. P 
Fructifications with reflexed por- 
tion 1-6 em. broad. 
Perennial on logs of several Lo "e DAR 
species of Quercus causing à pock- zone, z, eystidia of type, c, X 488. 
Ap 
Wi I 
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