July 1907] North Americari Species of Agaricaceae 147 



I. CONOPILAE. Surface of the pileus smooth and gla- 

 brous, even or striatulatc. Stipe polished and shining. 



a. Surface of the pileus even or only rugulose. 



1. PSATHYRA LIMBATA, Agaricus limbatus Holms- 

 KiOLD, Beata ot. II. 32; Agaricus corrugis Persoon, Disp. 



METH. FUNG. 1797; CoOKE, IlLUSTR. 576, 592. 



Pileus submembranaceous, campanulate, umbonate, subru- 

 gose, glabrous, rose-coior or pale flesh-color when moist, becom- 

 ing pallid when dry. Stipe fistulous, equal, smooth and glabrous,, 

 whitish or rufescent. Lamellae sinuate-attached, ventricose, vio- 

 laceous then blackening; spores elliptic-oblong 12-14x6-8 mic. 



Growing in gardens and woods. Pacific Coast Cat. Pileus 

 2-4 cm. in diameter; stipe 5-10 cm. long, 2-3 mm. thick. 



2. PSATHYRA CONOPILA Fries, Syst. Myc. I. 504. 

 Berkeley Outlines, 173. 



Pileus submembranaceous, campanulate, smooth and gla- 

 brous, whitish becoming pallid. Stipe tall tapering upward, gla- 

 brous, silvery shining. Lamellae slightly adnexed, close, brown 

 becoming purple ; spores 14 x y-^ mic. 



Growing in grassy grounds and gardens. N. Carolina, 

 Schzi'einita. Pileus 2-3 cm. in diameter; stipe 10-15 cm. long,. 

 2-4 mm. thick. 



3. PSATHYRA BULBILLOSA Fries, Novae Symb. 

 Myc. 1851. 



Pileus fleshy, elongate-conic, smooth and glabrous, dirty- 

 yellow or tawny brown. Stipe fistulous, smooth, glabrous, yel- 

 lowish, arising from a bulbous base. Lamellae ascending, linear, 

 brown then blackening. 



Growing on the ground, near Cartago, Costa, Rica, Oersted, 

 Ic. 13. Pileus 1-1.5 cm. in diameter; stipe 2-3 cm. long, 2-3 mm. 

 thick. It recalls to mind Psilocybe callosa but is a firmer plant.. 



4. PSATHYRA PSEUDOTENERA Fries, Novae Sym- 

 BOLAE Myc. 1851. 



Pileus fleshy, campanulate, smooth and glabrous, fulvous 

 becoming pallid. Stipe fistulous, equal, naked, at the apex whit- 

 ish, downward ferruginescent. Lamellae ascending, close, brown. 



At Naranjo in Costa Rica. Oersted. Ic. 14. Pileus 2-3 

 cm. high and broad ; stipe 5-6 cm. long, 2 mm. thick. With the 

 habit of Galera tenera or rather of G. siliginea but of firm tex- 

 ture and the lamellae fuscous. 



