356 FUNGUS-FLOEA. 



of the pileus, striate to tlie middle wten moist, 2 in. and 

 more broad, very hygroplianous, bay when moist, greyish- 

 white when dry ; gills attenuated behind, adnexed, crowded, 

 narrow, at first ascending, then plane, umber-brown. 



Psathyra otatusata. Fr. 



Pilens ^f in. across, submembranaceous, broadly cam- 

 panulate, obtuse, glabrous, corrugated, hygrophanous, rather 

 shining, umber, margin paler, every part paler when dry; 

 gills adnate, rather distant, slightly ventricose, pale then 

 umber ; stem 1-2 in. long, rather rigid, about 1^ line thick, 

 equal, almost naked, whitish, usually incurved at the base, 

 hollow ; spores elliptical, 6-7 X 4 /x. 



Agaricus (Psathyra) oUusatus, Fries, Syst. Myo. i. p. 293 ; 

 Cke., Hdbk., p. 216 ; Cke., lUustr., pi, 593. 



On trunks and on the ground. Solitary or tufted. 

 Berkeley says that the stem is rooting. 



Stem fragile, fistulose, 2-3 in. long, 1-2 lines thick, 

 round, equal, silky-fibrillose, not meally, whitish, apex even. 

 Veil none. Pileus submembranaceous, conical when young, 

 then convex, at length expanded, obtuse, 1 in. and more 

 across, bay or brownish-umber, disc even, margin striated 

 and paler, the very thin flesh similarly coloured. Gills 

 adnate, broad, distinct, rather distant, greyish-brown, then 

 umber. (Fries.) 



Psathyra negleeta. Massee. 



Pileus about ^ in. across, convex then almost plane, even, 

 glabrous, pale ochraceous, when dry atomate, almost white 

 except the disc; gills slightly attached, rather broad, 

 ventricose, at maturity purple-brown, crowded ; stem about 

 1 in. long, very slender, rather wavy, pellucid, glabrous, 

 white, tinged with rufous below ; spores elliptical, purple- 

 brown, smooth, 12 X 6 /x; cystidia abundant, fusiform, 

 50-60 X 12-14 fjL. 



On the ground; Kew Gardens, Nov. 1886. Eeadily 

 distinguished by its small size and pale colour; agreeing 

 with Psathyra urticaecola most nearly in size, but belonging 

 to a different section. 



