Nov. 1907] North American Species of Agaricaceae 247 



2. PSILOCYBE CLIVENSIS B. & Br., Ann. N. H. i860. 

 Pileus submembranaceous, convex, smooth, atomate, hygro- 



phanous, the margin striate, at first pale brown, then pale ochre 

 inclining to white. Stipe nearly equal above the slightly clavate 

 base, fistulous, somewhat silky. Lamellae broad, emarginate, 

 rather distant, umber, the edge white ; spores umber, 10 x 5 mic. 



Growing on the ground along the borders of woods. New 

 York, Peck. Pileus 2-3 cm. in diameter; stipe 3.5-4 cm. long, 2 

 mm. thick. 



3. PSILOCYBE FUSCOFULVA Peck. Bulletin I, No. 

 2. 1887. 



Pileus thin, convex or subcampanulate, subumbonate, glab- 

 rous, hygrophanous, dark watery-brown and striatulate when 

 moist, subochraceous when dry. Stipe slender, flexuous, stuffed, 

 slightly silky, reddish-brown. Lamellae rather broad, moderately 

 close adnate, subventricose, purplish-brown ; spores pairplish- 

 brown, 10-12 x 6-8 mic. 



Growing among Sphagna ; New York, Peck. Pileus 1-2.5 

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



4. PSILOCYBE SQUALIDELLA Peck, 46 N. Y. Rep. 

 1892. A. (Hypholoma) soualidellus Peck, 29 N. Y. Rep. 

 1876. 



Pileus thin, subcampanulate or convex then expanded, 

 smooth, hygrophanous, pale alutaceous or watery-brown when 

 moist, ochraceous or reddish-yellow when dry, the margin striate. 

 Stipe slender, flexuous, stuffed or hollow, reddish-brown, paler at 

 the summit, white-villous at the base. Lamellae broad, rounded 

 behind, adnexed, whitish then purplish-brown ; spores purple- 

 brown, elliptic, 9-10 mic. long. 



Gregarious or caespitose ; growing in wet places in woods ; 

 New York, Peck. Pileus 1-2.5 cm. in diameter; stipe 3-5 cm. 

 long, 2 mm. thick. 



5. PSILOCYBE SPADICEA, Agaricus spadiceus 

 Schaeffer, 1874. Agaricus stipatus Fries, Syst. Myc. I. 

 1821. 



Pileus fleshy, convex then plane, obtuse, smooth, wet, hygro- 

 phanous, umber-brown, becoming pallid when dry ; the flesh 

 whitening. Stipe tough, hollow, pallid, smooth at the apex. 

 Lamellae rather broad, close, rotundate-adnexed, at first whitish, 

 then flesh-color, at length brown ; spores brown, elliptic, 8-9 x 4-5 

 mic. 



Subcaespitose ; growing on the ground among old leaves, at 

 the base of stumps, etc. Recorded from the Atlantic to the Pacific 

 States; a world-wide species. Pileus 5-10 cm. in diameter; stipe 

 6-12 cm. long, 6-10 mm. thick. 



