282 THE AGARICACEAE OF MICHIGAN 



white-mycelioid. SPORES elliptical, 7-9x4-5 niicr., inequilateral, 



smooth, dark purple-brown under the microscope, blackish-purple 

 in mass. CYSTIDIA scattered on sides of gills, more numerous on 

 edge, 45-55 x 10-15 niicr., ventricose-lanceolate, apex obtuse. ODOR 

 and TASTE mild. 



Gregarious or scattered, on the ground or leaf mould, in wet places 

 of low frondose woods. Ann Arbor, New Richmond. May, June and 

 September. Infrequent. 



The color is somewhat variable in different localities but the 

 other characters are the same. It differs from P. cernua in the 

 presence of a very slight veil when young. The pileus is slightly 

 rigid but fragile ; its surface has a slight gelatinous feel when wet, 

 but there is no distinct pellicle, merely a somewhat differentiated 

 upper layer of more turgid cells. 



A closely related species occurs in low wet ground in woods, 

 which differs from this mainly in possessing a thin subgelatinous 

 pellicle of horizontal narrow hyphae, with narrower gills and 

 pellucid-white stem. The color of cap and stem and the microscopic 

 characters are otherwise the same. Perhaps it is a variety of P. 

 ericaea Fr., but the pileus is distinctly hygrophanous. 



275. Psilocybe submaculata Atk. 

 Ann. Myc, Vol. VII. p. 375. 1909. 



"PILEUS 4-10 mm. broad, convex, glabrous, hygrophanous. (hill 

 brownish, then dull white with dark watery and yellowish spots, 

 margin at first incurved. FLESH with a surface layer of sub- 

 pyriform to subglobose angular cells, inner portion floccose and 

 grading into the surface cells. GILLS adnate, emarginate, rather 

 crowded, brownish with a purple tinge, edge whitish. STEM 2-3 

 cm. long, 2-3 mm. thick, fistulose, even, somewhat flexuous, white 

 and shining, apex white-mealy, base with white mycelium. SPORES 

 suboblong, subelliptical, slightly inequilateral, 6-7 x 3-4 micr., pur- 

 ple-brown under the microscope. BASIDIA 4-spored. CYSTIDIA 

 few on sides of gills, very numerous on edge, ventricose, apex crystal- 

 line. On very rotten wood." 



The description is adapted from that of Atkinson, who reported 

 specimens from Michigan. I have not studied it. 



