362 FUNGUS-FLOKA. 



moist, pileus paler when dry, even and spuriously squamu- 

 loso-appendiculate. (Fries.) 



In Cooke's figure quoted above, the pileus is represented 

 with a distinct umbo. 



A large form grows on oak chips, a small form on damp 

 ground in shady places. Very fragile. Stem fistulose, 

 about 1 in. long, 1 line thick, equal, almost naked, apex 

 even. Pileus membranaceous, campanulate, then expanded, 

 obtuse, 1 in. or less, glabrous except for the presence of 

 deciduous squamules, everywhere striate, the large form 

 pale umber when moist, small form obscure brown. Very 

 hygrophanous, becoming pale when dry. Gills adnate, 

 broad, plane, sometimes pallid, at others obscure brown. 

 (Fries.) 



Psathyra microrhiza. Lasch. 



Pileus about 1 in. across, membranaceous, campanulate, 

 even, dry, shining with atoms, at first with yellow hair- 

 like fibrils ; gills adnexed, crowded, narrow, at first pale, 

 then blackish-brown ; stem 2 in. long, about 1 line thick, 

 attenuated into a tapering root-like base, silky, whitish, 

 hollow. 



Agaricus (Psathyra) microrhiza, Lasch., n. 468, Fries, Hym. 

 Eur., p. 309 ; Cke., Hdbk., p. 217 ; Cke., Illustr., pi. 596 A. 



In grassy places. 



Gregarious, at first everywhere flocculose, fragile, small. 

 Pileus ochraceous or rufous-brown, becoming pale. (Fries.) 



Distinguished by the tapering, rooting base of the stem. 



Gregarious, varying in size from a few lines to 1^ in. 

 when it approaches the finer forms of the P. gossypina. 

 (Berk.) 



Psathyra urticaecola. B. & Br. (fig. 15, p. 351.) 

 Pileus 2-3 lines across, campanulate, flocculent, margin 

 straight at length, striate, white; gills broadest in front, 

 adnexed, white, then chocolate ; stem |-1 in. high, slender 

 attenuated upwards, fistulose, flocculent, white; spores 

 7 x 4/A. 



Agaricus (Psathyra} urticaecola, B. & Br., Ann. Nat. Hist., 

 n. 919 ; Cke., Hdbk., p. 217 ; Cke., Illustr., t. 596 B. 



On nettle stems. Distinguished by its small size and 

 white colour. 



