358 FUNGUS-FLOKA. 



Agaricus (Psalhyra) bifrons, B., var. semitinctus, Phillips, 

 Cke., Illustr., pi. 594 B. 



On twigs, chips, &c. 



Pileus % in. broad, furnished at first with a minute 

 fibrillose very evanescent veil, rugulose, ochraceous-brown, 

 more or less tinged with red ; margin thin, transparent. 

 Gills adnate, moderately broad, cinereous shaded with pink ; 

 margin white, composed of minute wavy teeth. Spores 

 brown-purple. Stem 2| in. high, 1 line thick, filiform, 

 thickest at the base, beautifully but very minutely satiny, 

 not pulverulent, very brittle. (Berk.) 



Psathyra semivestita. B. & Br. 



Pileus |-f in. across, thin, ovate-campanulate, obtuse, 

 even, bay-brown when moist, becoming pallid-ochraceous 

 when dry, sprinkled when young up to the middle with 

 white fibrils ; gills adnate or adnexed, rather broad, greyish 

 then umber, narrowest in front ; stem 2-3 in. long, 1 line 

 thick, white silky, fibrillose, hollow ; spores elliptical, 10-12 

 X 5 p. 



Agaricus (Psathyra) semivestitus, Berk. & Broome, Ann. 

 Nat. Hist., n. 920, t. 14, f. 5 ; Cke., Hdbk., p. 215 ; Cke., 

 Illustr., pi. 578. 



Amongst grass in rich pastures, woods, &c. Caespitose in 

 the typical form, but a larger, solitary form occurs, having 

 the pileus 1-1 J in. across, stem 4-5 in. long, 2 lines or more 

 thick, remarkable for the coating of white fibrils on the 

 lower half of the pileus ; these, however, usually disappear 

 with age. 



Psathyra fatuus. Fr. 



Pileus f-1 in. across, submembranaceous, ovate-cam- 

 panulate, then expanded, rugulose, fibrillose at first, then 

 smooth and dingy ochraceous, apex darker, then paler ; gills 

 adnate, crowded, rather narrow, pale then brown ; stem 

 2-4 in. long, about 1| line thick, fragile, almost smooth, 

 white, apex rather mealy, hollow. 



Agaricus fatuus, Fries, Syst. Myc. i. p. 296 ; Cke., Hdbk., 

 p. 215 ; Cke., Illustr., pi. 595 A 



On the ground. 



Very fragile. Stem almost glabrous, pileus clay-coloured, 

 then whitish. Veil none. (Fries.) 



