SUBSECTION HYGROPHORUS 253 



Pileus 2-7(10) cm broad, obtuse to convex, then plane or umbo- 

 nate, in age the margin sometimes elevated and the disc depressed, 

 pure white over all, drying whitish or yellowish, glutinous to viscid, 

 glabrous or with a whitish-shining silkiness, margin even and at first 

 involute and floccose-pubescent. Context white, thick on the disc, thin 

 toward the margin; odor and taste mild. 



Lamellae somewhat arcuate at first, soon decurrent, subdistant to 

 distant, moderately broad, broadest near the stipe, narrowed in front, 

 pure white, slightly yellowish or buff in age and when dried. 



Stipe 4.5-15(18) cm long, 2-8(15) mm thick, equal to somewhat 

 tapered downward or with a greatly attenuated almost vermiform base, 

 flexuous, glutinous, silky beneath the gluten, apex fibrillose, punctate or 

 minutely squamulose, pure white, at times becoming sordid in age, 

 stuffed, then hollow. 



Spores 6-8(9) x 3.5-5 f±, ellipsoid, smooth, pale yellow in Melzer's 

 reagent, white in mass. Basidia 42-52 X 6-8 /x, 4-spored. Pleurocystidia 

 and cheilocystidia none. Gill trama of divergent hyphae, 7-12 /x broad. 



Fig. 73. H. eburneus 



