SUBSECTIOX HYGROPHORUS 281 



medium broad, lamellulae numerous, at times anastomosing, edges 

 even. 



Stipe 4-7 cm long, 5-8 mm thick, pallid, viscid, somewhat silky- 

 appressed, equal or slightly enlarged below. 



Spores 9-11 x 5-6(7) /*, ellipsoid, smooth, pale yellow in Melzer's 

 reagent. Basidia 44-60 X 6-9 /x, 4-spored. Pleurocystidia and cheilo- 

 evstidia none. Gill trama divergent, hyphae 6-12 fx broad. Cuticle a 

 gelatinous zone, an ixocutis, colorless, hyphae mostly repent. No hy- 

 podermium differentiated. Clamp connections present. Pileus trama of 

 radially disposed hyphae. 



Habit, Habitat, and Distbibutiox — On soil, under spruce, Cali- 

 fornia, December. 



Material Studied — California: Smith 56693 (type, from Patrick 

 Point, Dec. 15, 1956). 



Observations — This species is related to H. eburneus, but differs 

 in its pale-vellow pileus and lamellae, and in its larger spores. It is per- 

 haps closest to H. flavodiscus which has smaller spores and becomes 

 more orange-colored on drying. 



168 



Hygrophorus flavodiscus Frost apud Pk. 



N. Y. State Mus. Ann. Rept. 35: 134. 1884 



Illustration: 

 Fig. lOd. 



Pileus 2-7 cm broad, convex or plane, smooth, glutinous, the gluten 

 drying in radial streaks, white, with a pale-yellow or reddish-vellow 

 disc, becoming ochraceous orange to orange-buff on drying, margin 

 white-fibrillose. Context firm, white; odor and taste mild. 



Lamellae adnate or short-decurrent, becoming rather long-decur- 

 rent, subdistant, medium broad, at first pinkish, fading to whitish, the 

 interspaces sometimes veiny. 



Stipe 3-7.5 cm long, 6-14 mm thick, subequal, sheathed nearly to 

 the apex with a glutinous universal veil, white, sometimes slightly 

 stained with yellow, fibrillose to scabrous punctate at the apex. 



Spores 6-8 X 3.5-5 /z, ellipsoid, smooth, yellowish in Melzer's rea- 

 gent. Basidia 34-48 x 5-8 /z, 4-spored. Pleurocystidia and cheiloeystidia 

 none. Gill trama of divergent hyphae, 3-8 fx broad. Cuticle a gelatinous 

 zone 180-350 p thick, with tangled, imbedded, narrow ( -3-5 /* ) hvphae 

 with a conspicuous, yellow pigment-deposit. No hypodermium differ- 

 entiated. Pileus trama interwoven, hyphae radially disposed. Clamp 

 connections present on the cuticular hvphae. 



