1920 



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, /. Macoun, 3; Lake 



O'Hara, J. Macoun, 7 ; 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). 



m 



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. pi 41. 1915. Plate 6, fig. 69. 



Illustrations: Jour. Agr. Res. 5: pi. 41- 



Type: in Curtis Herb, and Kew Herb. 



Fructifications thick, corky, drying rigid, very hard, resupi- 

 nate oreffuso-renexed, 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 m thick, with 

 the intermediate layer bordered and 

 connected with the tomentum by a 

 denser and darker crust and bearing 

 on the opposite side a hymenial 

 layer which becomes multizonate; 

 hyphae of intermediate layer col- 

 ored, thick-walled, stiff, 3-3J m in 

 diameter, densely and longitudi- 

 nally arranged; cystidia incrusted, 

 cylindric, 30-36 X 7 n, becoming col- 

 ored where buried in older zones of 

 the hymenium, at first sometimes 

 slightly aculeate ; spores hyaline, 

 even, 4-5 X 3 n. 



Fructifications with reflexed por- 

 tion 1-6 cm. broad. 



T>~~,,,*i 1 i Fig. 40. S. subpileatum. Sec- 



Perennial on logs of several , * *o u u n-i^ 



& tion X 68; hymenium, h, crust-like 



Species Of Quercus Causing a pock- zone, z, cystidia of type, c, X 488. 



