PSATHYRA. 357 



III. FIBRILLOSI. Pileiis and stem at first jihrillose or 

 floccose from the remains of the universal veil. 



Psathyra frustulenta. Fr. 



Pileus about 1 in. across, membranaceous, fragile, cam- 

 panulate then hemispherical, obtuse, hygroi^hanous, slightly 

 striate, with white squamules near the margin ; gills adnate, 

 ascending, crowded, whitish, then watery cinnamon ; stem 

 about 2 in. long, and 1 line thick, equal, rather wavy, 

 flocculose, white; spores elliptical, smooth, pale rusty- 

 bro-wn, 10 X 4 /a. 



Afjaricus (Psathjra) frustulentus, Fries, Monogr. i. p. 422 ; 

 Fries, Epicr., p. 209 ; Fries, Hym. Eur., p. 307. 



Amongst gravel in damp places. 



Departs from the Erythrosporae in the rusty-brown 

 spores, but the general structure is that of Psathyra, much 

 more than that of Galera. 



Intermediate between the Dermini ( = Ochrosporae) and 

 the Pratellae ( = Por2:)hyrosporae). Allied to the former in 

 the fusco-ferruginous spores, to the latter in general habit, 

 remarkable fragility, and in being very hygrophanous. 

 Stem fistulose, 2-3 in. long, 1 line thick, equal, subundulate, 

 usually not straight, fibrillose or with scattered white 

 downy portions, whitish. Pileus membranaceous, very 

 fragile, campanulate, then hemispherical, obtuse, disc slightly 

 fleshy, about an inch broad, slightly striatulate when moist, 

 watery ferruginous but very pale ; even and paler when 

 dry, glabrous in both conditions, but at or near the margin 

 whitish floccose. Gills adnate, crowded, ascending, watery 

 cinnamon, then brownish. (Fries.) 



Psathyra bifrons. Berk, 



Pileus, |— I in. across, submembranacoous, campanulate, 

 obtuse, ochraceous-brown, tinged with pink, palo ochraceous 

 when dry, smooth, even, margin very thin, transparent; 

 gills adnate, narrow, pinkish-grey, margin minutely toothed, 

 white ; stem 2-3 in. long, 1-2 lines thick, slightly attenu- 

 ated upwards, straight, naked, whitish, hollow ; spores 

 elliptical, 8 x 4 /a. 



Agaricus hifrons, 'Berh., 'Engl. Flor., vol. v. p. 114; Cke., 

 Hdbk., p. 215; Cke., Illustr., jjL 594. 



