278 THE AGARICACEAE OF MICHIGAN 



This is referred to by "Fries as var. clongata (Hymen. Europ.). The 

 varietal name is used by Ricken for a plant which he calls Hypho- 

 lonia elongatum, which has much smaller spores, while he claims that 

 P. uda has no trace of a veil, but has the large spores. Battaille 

 (1. c.) describes our plant well and emphasizes the deep violet color 

 of the spores, which is quite marked in the Michigan specimens, as 

 well as the slight evanescent annulus. The only discrepancy is that 

 the habitat of P. uda is on dung instead of sphagnum and while this 

 is important it is deemed best to refer it for the present to the 

 above species. It is a better Stropharia. 



269. Psilocybe ericaea Fr. 



Syst. Myc, 1821. 



Illustrations: Fries, Icones, PL 136, Fig. 1. 

 Cooke, 111., PL 508. 



PILEFS 2-3 cm. broad, convex then subexpanded, obtuse or urn- 

 bonate, even, subviscid, with a gelatinous separable pellicle, tawny- 

 fulvous, glabrous, at first with a whitish, fibrillose cortina on edge. 

 FLESH firm, thickish, rather compact, pallid. GILLS adnate, be- 

 coming emarginate, broad, close or almost crowded, whitish at first, 

 then fulvous-brown and sprinkled with blackish spots, edge minutely 

 white fimbriate. STEM 5-8 cm. long, 34 mm. thick, equal, flexuous, 

 stuffed with a rather persistent pith, glabrous, apex pruinose, pallid 

 then fuscescent, curved at base and attached to fallen leaves, etc. 

 SPORES oval-elliptical, inequilateral, 9-11 x 5-5.5 micr., pale pur- 

 plish under the microscope, dark in mass. CYSTIDIA none. 

 STERILE CELLS on edge of gills, subcylindrical, elongate-narrow, 

 34 micr. diam. ODOR and TASTE mild. 



On the ground in mixed woods. New Richmond. September. 



Agrees well in size, shape and color with the figures of Fries. 

 Authors give conflicting spore-sizes and it seems impossible to be 

 certain of the plant on this point. 



Section III. Rigidae. Cortinate veil none or slight (except in 

 P. larga), pileus hyijrophanous, rigid-fragile when dry, scarcely or 

 not at all pelliculose. 



This section has the appearance of the second section of the Hy- 

 pholomas except in the absence of or reduced development of the 

 veil; the first species represents a connecting link between them. 



