Fungus Flora of Mt. Hood 141 



Omphalia umbellifera Fr. forma ochraleuca, f. nov. — 

 Plant "cream-color" (R.) in all parts. Spores ovoid-elliptical, 

 smooth, hyaline, 6-8 x 4-5 (x; cystidia none. Gills distant, 

 broadly decurrent, broadest in middle, few forked. Stem sloid, 

 more or less pruinose. Pileus convex-umbilicate to subinfundi- 

 buliform, striate-plicate, with a white-appressed pruinosity. 

 Collected several times with the characters constant. It differs 

 from the other forms of this variable species mostly in color. 



Panus stipticus Fr. Pleurotus serotinus Fr. 



Paxillus atrotomentosus Fr. Pluteus granulatus Fr. 

 Pholiota adiposa Fr. Pluteus cervinus Fr. 



Pholiota erebia Fr. Pluteus leoninus Fr. 



Pholiota discolor Pk. Pluteus nanus Fr. 



Pholiota marginata Fr. Pluteus tomentosulus Pk. 



Pleurotus albolanatus Fr, Psalliota arvensis Fr. 



Psalliota subrutilescens, sp. nov. (See Plate X.) — Pileus 

 7-12(15) cm. broad, oftener 7-9 cm., fleshy, firm, at first hemi- 

 spheric-oval, at length broadly convex, obtuse or obsoletely 

 subumbonate, at first uniformly covered by a continuous, ap- 

 pressed, fibrillose-hairy cuticle which is "hays brown" to "sorg- 

 hum brown"; during expansion this cuticle is broken up into very 

 numerous, small and appressed, hairy areolae, scarcely in form of 

 scales, and the color changes slowly to shades of vinaceous, 

 e. g. "light russet vinaceous," "brownish-vinaceous," "vinaceous- 

 brown" (R.), etc., remaining darker on disk, the whitish flesh 

 scarcely showing between the areolae, margin even, indistinctly 

 virgate. Gills free, at first reaching the stem, becoming subre- 

 mote, narrow, 4-5 mm., sublinear, crowded, "safrano pink" (R.) 

 when immature, later "vinaceous fawn," finally "sorghum- 

 brown" (R.) or darker, glistening, edge entire. Stem 8-12 

 (15) cm. long, oftener 8-10 cm., tapering upwards from a sub- 

 clavate base, 7-10(12) mm. thick at apex, 12-18 mm. at base, 

 often subdecurrent at base, at first peronate by a rather thick, 

 densely silky-interwoven, snow-white sheath, which becomes 

 lacerate-torn forming pointed or squarrose scales, and termi- 

 nating above in the annulus, apex of stem even, silky or minutely 



