PSATHYEELLA. 341 



(rarely linear), almost distant, at first whitisli, then from the 

 black spores greyish-black, edge rose-colonr. (Fries.) 



Psathyrella hiascens. Pr. 



Pileus about 1 in. across, membranaceous, campannlate, 

 glabrous, sulcate and splitting, disc even, brownish, the 

 remainder pallid or greyish ; gills attached to the stem, 

 rather distant, broadest behind, pale, then blackish; stem 

 1-^—2 in. long, 1-1|^ lines thick, straight or slightly curved 

 at the base, brittle, rigid, glabrous, white, hollow; spores 

 elliptical, 7 x 3-5 ft.. 



Agaricus (Psathyrella) hiascens. Fries, Syst. Myc. i. p. 303 ; 

 Cke., Hdbk., p. 222 ; Cke., Hlustr., pi. 636. 



Under hedges, damp woods, &c. 



"With the habit of a Goprinus of the Yelifoi-mes section, but 

 distinguished by its rigidity, and by the dry gills. Stem 

 fistulose, 3 in. long, 1 line thick, straight, rigid, and fragile, 

 glabrous, naked, whitish. Pileus membranaceous, conico- 

 campanulate, obtuse, 1 in. high, glabrous, livid, then 

 yellowish, soon (usually up to the middle) with gaping 

 fissures as in the slender species of Coprimts, but dry and 

 persistent, not diffluent, margin at length splitting and 

 revolute. Gills adnata, narrow, linear or subattenuated in 

 front, distinct, distant, whitish, then black, at length very 

 black. Spores black. (Fries.) 



Psathyrella arata. Berk. (fig. 14. p.303.) 



Pileus f— 1 in. across, membranaceous, oampanulato-conic, 

 rather acute, margin coarsely and deeply sulcate, brown, 

 paler when dry ; gills free, lanceolate, slightly broadest in 

 front, black with a tinge of purple; stem 4-5 in. long, 

 slender,- gradually and slightly attenuated upwards, white, 

 smooth, even, hollow. 



Agaricus {Psathyrella) aratus. Berk., Outl., p. 176; Cke., 

 Hdbk., p. 222 ; Cke., niustr., pi. 636. 



Under hedges, &c. 



"With somewhat the habit of Psathyrella substrata, but 

 distinguished from this and every other species by the pale 

 brown pileus having the margin coarsely sulcate, and the 

 long, white, tapering stem. 



Psathyrella trepida. Fr. 

 Pileus about 1 in. across, membranaceous, campanulate. 



