1915] 



BURT THELEPHORACEAE OF NORTH AMERICA. V 761 



Scand. These specimens are under the name Corticium 



Ahietis. 

 Norway: Christiania, M. N, Blytt (in Herb. Fries and deter- 

 mined by Fries as Corticium calceum). 

 Finland: Mustiala, P. A, Karsten, under the name Xero- 



carpus farinellus, 

 Canada: J, Macoun, 30, 33. 



New Hampshire : Chocorua, W. G. Farlow, two collections. 

 Vermont: Middlebury, E, A, Burt, two collections; Ripton, 



E, A, Burt; Little Notch, Bristol, E, A, Burt, 

 New York: Alcove, (7. L. Shear, 1134, 1208; Hague, C. H. 



Pech, 10; Clear Water, G. F, Atkinson, Cornell Univ. Herb., 



5049. 

 Georgia: Tipton, C. J. Humphrey/, 177; Savannah, C, J, 



Humphrey, 5106 (in Mo. Bot. Gard. Herb., 15081). 

 Washington: Bingen, W. N, Suksdorf, 695, 711, 763, 765, 664. 



8. S. monticola Burt, n. sp. 



Type : in Mo. Bot. Gard. Herb. 



Fructification coriaceous, resupinate, cracked, dirty whitish 

 approaching pale smoke-gray, the margin closely adnate; 

 structure in section 200-300 /z thick, with hyphae colorless, 

 3-4 n in diameter, ascending obliquely from substratum to 

 surface, densely crowded together, more interwoven and little 

 incrusted in the lower third of the fructification, but more 

 loosely arranged and heavily incrusted in the whole upper 

 two-thirds, terminating in incrusted paraphyses which are 

 either simple or 2-4-branched and with the hyphal body about 

 2 J /x in diameter under the incrustation; basidia about 40 n 

 below the surface of the hymenium, longitudinally septate, 

 15-20 X 9-12 n ; spores simple, colorless, even, cylindric, 

 straight or curved, 9-lOJ X 5-5J /x. 



The portion of the fructification described is 5 cm. long, 

 about IJ cm. wide. 



On bark of log of Picea Engelmanni, altitude 8,500 ft., 

 Pike's Peak, Colorado. August. 



This species belongs in the group with Sebacina calcea and 

 8. macrospora; it is distinguished from both of these by the 



