Murrill : Dark-Spored Agarics 



135 



Specimens from Bresadola and Romell are in the Garden her- 

 barium. Plants collected by me late in August on humus under a 

 pine log in Maine, where I obtained several collections, had a 

 "pale, dull-yellow cap, which was viscid when fresh; white, ap- 

 pendiculate margin; stipe and edges of gills pure-white." I also 

 found it twice in deep, rich woods in the Adirondacks. Peck's 

 specimens were at first referred to Agaricus Hornemanni, which 

 was Fries's name for this species before he adopted that of Persoon. 

 Stropharia Hardii, according to Harper, is probably this species, 

 although the spores are described as smaller. I have not seen the 

 types. 



12. Stropharia epimyces (Peck) Atk. Plant World 10: 128. 



1907 



Panaeolus epimyces Peck, Ann. Rep. N. Y. State Mus. 35: 133. 

 1884. 



Stropharia coprinophila Atk. Jour. Myc. 8: 118. 1902. 



Pileus fleshy, at first subglobose, then convex to expanded, 2-6 

 cm. broad ; surface white, then dingy, silky-fibrillose ; context soft, 

 white or whitish, with mild odor and taste; lamellae adnexed, 

 rounded behind, somewhat crowded, dingy-white, becoming brown 

 or blackish, with white edges ; spores ellipsoid, smooth, dark-pur- 

 plish-brown under the microscope, almost black in mass, 7-8.5 x 

 4-6 fjc ; cystidia clavate or subventricose, on a slender stalk, 40-60 x 

 10-14 ^; stipe short, stout, tapering upward, strongly striatulate 

 and minutely mealy or pruinose, solid in the young plant, hollow in 

 the mature plant, but with the cavity small, white-annulate near the 

 base from the white, floccose veil, 2.5-7 cm - l° n g> 5 -I 5 mm - thick. 



Type locality : North Greenbush, New York. 



Habitat : Parasitic in groups on Coprinus comatus, C. atramen- 

 tarius, and perhaps other species of the genus. 



Distribution : Northeastern North America, Canada to New 

 York and west to Minnesota ; perhaps also in Europe. 



Illustrations: Plant World 10: /. 22-24; Hard, Mushr. /. 

 227; Jour. Myc. 2 : pi. 80; Mycologia 8: pi, 178, f. C, D; pi 179, 

 f. A, B. 



Interesting studies have recently been made of this rather queer 

 species by Harper, Atkinson, Kauffman, and McDougall. Harper 



