280 THE AGARICACEAE OF MICHIGAN 



271. Psilocybe cernua Fr. 



Syst. Myc, 1821. 



Illustrations: Cooke, 111., PL 571. 

 Plate LVIII of this Report. 



PILEUS 1-1 cm. broad, convex-campanulate, liygrophanous, livid 

 watery-brown when moist and then striate, whitish when dry, often 

 areolate cracked and rugulose in age, veil entirely lacking. FLESH 

 rather thin, whitish when dry. GILLS adnate-seceding, moder- 

 ately broad, rounded behind, close, at first whitish, finally purplish- 

 umber, edge minutely white -flocculose. STEM 2-5 cm. long, 2-1 mm. 

 thick, equal or tapering below, delicately stuffed then tubular, w/iite, 

 rigid-cartilaginons when dry, subfibrillose, apex pruinose, flexuous 

 or variously curved. SPORES oblong-elliptical, 6-7x3-1 micr., 

 smooth, purple-brown under microscope. CYSTIDIA none. 

 STERILE CELLS on edge of gills, short, subsaccate, 25 x 7 micr. 

 ODOR and TASTE none. 



Caespitose or subeaespitose-gregarious, at the base of trees. 



Ann Arbor, New Richmond. September-October. Infrequent. 



The pileus is rather firm when dry, not splitting easily on the 

 margin on drying. This species agrees well with the descriptions 

 and Cooke's illustration. 



272. Psilocybe murcida Fr. 

 Syst. Myc, 1821. 



PILEUS 2-1 cm. broad, obtuse, fragile, campanulate-convex, 

 then expanded, liygrophanous, dark bay-brown and striatulate on 

 margin when moist, fulvous-alutaceous or rufous-tinged when dry, 

 then subrugulose and atomate, glabrous. FLESH thin, subrigid 

 and fragile. GILLS adnate, almost close, narrow, attenuate in 

 front, subventricose, becoming fuscous-purplish, edge white-floc- 

 culose. STEM 6-8 cm. long, 1.5-2.5 mm. thick, slender, fragile, white 

 at first, then pallid, slightly fibrillose, glabrescent, stuffed with a 

 white pith then hollow, undulate. VEIL none. SPORES elliptical- 

 oblong, 10-12x6 micr., obtuse, smooth, purple-brown under micro- 

 scope, purplish-black in mass. CYSTIDIA scattered, on sides and 

 edge of gills, ventricose-elongated, narrow above, 50-60 x 9 micr. 

 ODOR and TASTE none. 



Solitary and scattered. On low, wet ground in low woods. Ann 



