** 





[Vol. 12 

 332 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



100. P. alutaria Burt, n. sp. 

 Type: in Burt Herb. 

 Fructifications effused, closely adnate, very thin, not at all 



separable, clay color in the herbarium, somewhat lacunose in 

 some places, somewhat granular where thickest, the margin 

 thinning out; in section 120-160 y. thick, showing a little color 

 when only little magnified and giving the characteristic color to 

 the fructification but hyaline under high magnification, com- 

 posed of densely arranged, interwoven, suberect hyphae 3-33^ n 

 in diameter, not incrusted ; no gloeocystidia ; cystidia of two kinds : 

 cylindric, hair-like, flexuous cystidia 3-3}^ [l in diameter, not 

 incrusted protrude up to 30 \i beyond the basidia and sometimes 

 have capitate tips; smaller incrusted cystidia 10 X 3 \l are pres- 

 ent at surface of hymenium; basidia 4-spored; spores white in 

 spore collection, even, subglobose, 3-3^ X 3 ^. 



Fragmentary pieces of fructifications are up to 5 cm. long, 

 2 cm. wide. X *>- j&-U. +- * 



Type on wood of hardwood log of a frondose species in moun- 

 tain woods, also on Larix. Vermont and Michigan. November. 

 Rare. 



P. alutaria seems possible of recognition by its clay color, 

 closely adnate fructifications, and small spores and cystidia. 



Specimens examined: 

 Vermont: Little Notch, Bristol, E. A. Burt, type. 

 Michigan: pole yard, Escanaba, C. J. Humphrey, 1783 (in Mo. 



Bot. Gard. Herb., 42931). 



101. P. separans Burt, n. sp. 



Type: in Mo. Bot. Gard. Herb, and Dodge Herb. 



Fructifications broadly effused, adnate, somewhat membra- 

 naceous, small pieces separable when moistened, between pale 

 ochraceous buff and avellaneous in the herbarium, even, some- 

 what cracked and showing the darker substance in the sides of 

 the fissures, the margin thinning out, slightly darker, some- 

 what radiately fibrillose, adnate; in section 300-350 \l thick, 

 colored, stratose, each stratum 2-layered, the supporting layer 

 composed of densely and longitudinally interwoven, slightly 

 colored hyphae 3-3J^ ^ in diameter, the hymenial layer 75- 



