April 1908] North American Species of Agaricaceae 71 



12. STROPHARIA FLOCCOSA EARLE. Hangos 



CUBANOS, 1906. 



Pileus fleshy, convex, then expanded and depressed ; the 

 flesh thin, grayish ; the surface brown-ochraceous, with a tinge 

 of purple, when dry densely flocculose-scaly. Stipe equal or 

 tapering slightly upward, fistulous, whitish, densely pubescent; 

 the annulus thick, whitish, persistent. Lamellae adnate, close, 

 rather narrow, of a uniform color, becoming dark purple-brown ; 

 spores elliptic, ovoid, d-y x 4 mic. 



Gregarious or caespitose ; growing on the ground under- 

 neath buildings ; Cuba, Earle. Pileus 2-4 cm. in diameter ; stipe 

 4-6 cm. long, 2-4 mm. thick. 



§ 2. VISCIPELLES. Dermis of the pileus a thin mem- 

 brane covered by a viscous epidermal layer; the surface of the 

 membrane usually smooth and glabrous. 



I. STERCORARIAE. Plants with much the habit of 

 species o\f Panaeolus ; grozmng on manure or in richly manured 

 soil. 



a. Pileus convex, obtuse. 



13. STROPHARIA SEMIGLOBATA. Agaricus semi- 



GLOBATUS BatSCH. El. FUNG. CONT. I., I786; AgARICUS GLUTIN- 



osus Curtis, Flora Land, 1777; Fungus parvus, albus, cum 



LUTEOLA PORTE IN SUMMITATE CAPITULI, VISCO NITENTE RE- 



splendens. J. Banhimes, Hist. Pl. 1650, 



Pileus fleshy, hemispheric, then conyex, obtuse; the flesh 

 very thin, white ; the dermis a thin, smooth, yellowish membrane, 

 with a thick glutinous epidermal layer, at first continuous down- 

 ward with that of the stipe. Stipe tall, slender, straight, fistu- 

 lous ; the annulus rather distant, merely the upper margin of the 

 glutinous investment of the stipe. Lamellae very broad, adnate, 

 black-nebulous; spores purple-brown, elliptic, 10-15x8-10 mic. 



Solitary or gregarious; growing on manure in pastures; 

 common everywhere, a world-wide species. Pileus 1-2 cm. in 

 diameter; stipe 6-10 cm. long, 2-3 mm. thick. 



14. STROPHARIA STERECORARIA, Agaricus stere^ 

 coRARius Fries, Syst. I, 1821. 



Pileus fleshy, hemispheric, then convex and explanate ; the 

 flesh thin, white ; the dermis a thin yellowish membrane, the sur- 

 face smooth, glabrous and slightly viscid. Stipe tall, slender, 

 straight, stufifed with a distinct pith, below the distant annulus 

 flocculose and slightly viscid. Lamellae very broad, adnate, at 

 first white, at length umber or olive-black; spores purple-brown, 

 elliptic, 16-20 X 12-15 r^ic- 



