152 Journal of Mycology [Vol. 13 



21. PSATHYRA OBSCURA, Psilocybe obscura Peck. 

 Bull. Torr. Club. 1897. 



Pileus thin, convex, hygrophanous, striatulate, brown or 

 reddish-brown, more or less flecked or scurfy with a white floc- 

 cose tomentum. Stipe slender, fistulo'us, a little paler than the 

 pileus, whitish-tomentose at the base. Lamellae broad, subdist- 

 ant, adnate, brown becoming almost black, the edge white ; spores 

 elliptic, 10-13 X 6-8 mic. 



Growing in rich leaf mold in woods. Kansas, Bartholomew, 

 Pileus 1-2 cm. in diameter; stipe 2.5-4 cm. long, 2 mm, thick. 



22. PSATHYRA SUBNUDA Karsten, Symb. Myc 

 X. 60. 



Pileus thin, fragile, conic-convex then expanded, umbonate, 

 atomate, striatulate, with a few fugacious fibrils, pallid or pale 

 livid, whitish when dry. Stipe fistulous, straight, at first slightly 

 silky, villous at the base, becoming smooth and shining, white 

 or whitish. Lamellae close, subventricose, adnate, at first pale 

 cinereous with a tinge of violet, at length brown ; spores fuscous^ 

 elliptic, 8-9 X 4 mic. 



Growing on the grounds in woods. Preston, Ohio. Pileus 

 4-6 cm. in diameter; stipe 7-10 cm. long, 2-4 mm. thick. 



2^. PSATHYRA MIAMENSIS Morgan sp. nov. 



Pileus submembranaceous, thin and fragile, convex then ex- 

 planate, striate nearly to the center, rufescent, at an early stage 

 the surface ornamented with tufts of white flocci, which soon 

 disappear. Stipe arising from a white mycelial bulb, tapering 

 upward, fistulous, rufescent beneath the white-fibrillose cuticle. 

 Lamellae broad, rather distant, adnate, pallid then fuliginous; 

 spores purplish-black, elliptic-oblong, 9-11x6-7 mic. 



Growing in loose sand along the Miami river ; Preston, Ohio. 

 Pileus 1.5-2.5 cm. in diameter; stipe 3-4 cm, in length and 2-3 

 mm. thick. The species seems most nearly related to Ps. helobia 

 Kalch. 



h. Pileus not striatulate. 



24, PSATHYRA MICROSPERMA Peck, Bull. Torr. 

 Club. 1899. Sylloge XVI, 126. 



Pileus ovoid or subhemispheric then convex or subcampan- 

 ulate, obtuse, smooth, hygrophanous, brown, paler when dry, at 

 first flocculose; the flesh brownish. Stipe equal, hollow, fibril- 

 lose. Lamellae close, adnate, brown ; spores brown, elliptic, 5-6 

 x 3-4 mic. 



Growing around old stumps. Ohio, Lloyd; Michigan, 

 Kauffman. Caespitose ; pileus 1-2.5 cm. in diameter ; stipe 2.5-3 

 cm. long, 2-3 mm. thick. 



