70 Forty-first Annual Report on the 



Psilocybe clivensis, B. & Br. 

 Borders of woods. Catskill mountains. September. 



Psilocybe senex, n. sp. 



Pileus tliin, hemisplierical, obtuse, byg'roplianous, dark brown and 

 striatulate when moist, pale cinereous and shining when dry, some- 

 what squamrse with superficial subfasciculate whitish fibrils, the 

 margin appendiculate with the same; lamellae broad, subdistant, 

 adnate, at first grayish, then brown or blackish-brown with a white 

 edge; stem slender, hollow, fragile, minutely floccose-pruinose, sub- 

 pellucid, white; spores brown, elliptical, .0003 in. long, .0002 broad. 



Pileus 6 to 10 lines broad; stem 1.5 to 3 in. long, 1 line thick. 



Decayed wood in woods. Catskill mountains. September. 



The species is apparently related to P. canifaciens, but is at once 

 distinguished by its slender white stem. The specific name has refer- 

 ence to the white hairs or fibrils of the pileus, which are suggestive 

 of the white hairs of old age. 



Deconica siibviscida, n. sp. 



Pileus thin, at first subconical, then convex or nearly plane, often 

 slightly umbonate, glabrous, hygrophanous, pale chestnut or reddish 

 tan color, subviscid and striatulate on the margin when moist, pallid 

 or dull buff when dry; lamellae broad, subdistant, adnate or slightly 

 decurrent, at first whitish or dingy, then brownish ferruginous; stem 

 equal or tapering downwards, fibrillose, hollow, brownish toward 

 the base, paler above, the fibrils whitish or grayish; spores oV^te, 

 brown, .0003 in. long, .0002 broad. 



Pileus 3 to 6 lines broad; stem about 1 in. long, 1 line thick. 



Horse dung and manured ground. Menands. August. 



This species has many characters in common with D. buUacea, from 

 which I have separated it because of its scarcely viscid pileus without 

 a separate cuticle, and its different spores. It is gregarious, and in 

 wet weather apjaears in great abundance and in successive crops. The 

 slight whitish veil is perceptible in the young plant. 



Psatliyrella minima, n. sp. 



Pileus membranous, hemispherical, obt"se, obscurely striatulate 

 when moist, even and pruinose-atomate when dry, dingy-yellow or 

 reddish -brown, becoming paler in drying; lamellae broad, adnate, 

 white, becoming yellowish-cinnamon ; stem capillary, minutely mealy 

 or furfuraceous under a lens, pellucid, white ; spores black, narrowly 

 elliptical, .00025 to .0003 in. long .00012 to .00015 broad. 



Pileus 1 to 2 lines broad ; stem 4 to 6 lines long. 



