1925] 



BURT THE THELEPHORACEAE OF NORTH AMERICA. XIV 259 



Missouri: Perryville, R. A. Studhalter & L. 0. Overholts, 2706 



(in Mo. Bot. Gard. Herb., 44290). 

 Nebraska: Lincoln, C. L. Shear, 5Ifi. 

 Idaho: Priest River, J. R. Weir, 608 (in Mo. Bot. Gard. Herb., 



63196). 

 British Columbia: Sidney, J. Macoun, 10 (in Mo. Bot. Gard. 



Herb., 5728). 

 Washington: Bingen, W. N. Suksdorf, 764; Arlington, C. J. 



Humphrey, 7610. 

 Oregon: Eugene, C. J. Humphrey, 6061; Tidewater, S. M. Zeller, 



1985 (in Mo. Bot. Gard. Herb., 58762). 

 Cuba: Ceballos, C. J. Humphrey, 2805. 

 Island of Guam: Edwards, comm. by J. R. Weir, 10765 (in Mo. 



Bot. Gard. Herb., 56238). 

 Japan: Mt. Mikuma, Prov. Awaji, A. Yasuda, 62 (in Mo. Bot. 



Gard. Herb., 56138). 



41. P. subiculosa Burt, n. sp. 



Type: in Mo. Bot. Gard. Herb, and N. Y. Bot. Gard. Herb. 



Fructifications effused, somewhat membranaceous, tender, 

 small pieces separable when moist, with the hymenium drying 

 cartridge-buff, pulverulent, here and there cracked and showing 

 the whitish subiculum which is pale chamois-colored next to the 

 substratum and connected with chamois-colored marginal my- 

 celial strands or cords; in section 400-500 y. thick, not distinctly 

 colored, with the hyphae loosely interwoven, hyaline, 4 y. in 

 diameter, not nodose-septate, granule-incrusted in all regions 

 with large crystalline granules; cystidia heavily incrusted, 20-60 

 X 9 {a, protruding up to 15 [l, confined to the hymenium; spores 

 hyaline, even, 3-3^ X 2}4 V-, borne 4 to a basidium. 



Fructifications 2-3 cm. long, 1 cm. broad. 



On humus of frondose wood. Mexico. December. Only one 

 collection known. 



P. subiculosa is related to P. Burtii but differs from it in having 

 larger and incrusted cystidia and all hyphae heavily incrusted. 



Specimens examined : 

 Mexico: Guernavaca, W. A. & E. L. Murrill, 396, type (in N. Y. 



Bot. Gard. Herb., and Mo. Bot. Gard. Herb., 54550). 



