PSATHYBA. 355 



Psathyra gyroflexa. Fr. (fig. 13, p. 351.) 



Pileus I- 5 in. across, membranaceous, conico-campanulate, 

 deeply striate half way up the pileus, atomate, becoming 

 very pale grey, disc rufescent, gills adnexed, crowded, soft, 

 narrow, greyish-purple; stem li-2 in. long, about 1 line 

 thick, equal, white silky, shining, hollow, flexuous; spores 

 elliptical, 10 X 6/*. 



Agaricus gyraftexus, Fries, Epicr., p. 232; Cke., Hdbk., 

 p. 214; Cke., lUustr., pi. 970. 



Amongst grass, &c. Scattered or usually subcaespitose. 

 Distinguished by the slender wavy stem and rather coarsely 

 striate pileus. With the habit of Psaihyrella disseminata. 



Stem fistulose, formed of two tubes, very fragile, tortuous, 

 surface undulated, 2 in. long and more, scarcely 1 line thick, 

 dry, glabrous, shining, white. Pileus submembranaceous, 

 conical then campanulate, obtuse, \ in. broad, glabrous, pallid- 

 white, margin striate. Gills adnate, ascending, broad, 

 greyish-purple. (Fries.) 



II. OBTUSATI. Pileus campanulato-convex, expanded, glabrous 

 or atomate ; gills plane or arcuato-adfixed ; veil absent. 



Psathyra spadicio-grisea. Schaeff. 



Pileus 1-1^ in. across, submembranaceous, conical then 

 campanulate, becoming expanded, glabrous, striate to the 

 middle, hygrophanous, bay then greyish ; gills adnexed, 

 rather crowded, narrow, brownish; stem 1| 2 in. long, 

 1-2 lines thick, usually curved, firm subequal or attenuated 

 upwards, white, shining, apex striate, hollow. 



Agaricus spadiceo-griseus, Schaefier, Icon., t. 237 ; Cke. 

 Hdbk., p. 214; Cke., Illustr., pi. 611. 



On chips, also on and near trunks, &c. Subcaespitose or 

 solitary, watery, fragile. With the habit and general 

 structure of a Psathyra, but departing from the specific 

 character in the persistent brown colour of the gills. 



Solitary or gregarious; often large numbers springing 

 from the same point, but not connate. Stem hollow, 3 in. 

 long, 2 lines thick, equal, whitish, shining, apex striate, 

 sometimes powdery. Pileus submembranaceous, very 

 fragile, campanulate then convex, at length expanded, 

 obtuse, glabrous, even, but owing to the translucent nature 



2 A 2 



