i54 RESEARCHES ON FUNGI 



first described by Peck ^ in 1884 as Panaeolus epimyces, but in 1902 

 and 1907 it was redescribed by Atkinson, ^ and placed by him in 

 the genus Stropharia because of the purplish tinge of the spores 

 and the presence of an annulus on the stipe. McDougall,^ who has 

 studied the development of the fruit-bodies, believes this change of 

 generic position to be justified. The late E. T. Harper ^ held the 

 view that, in all probability, Stropharia epimyces (Peck) Atk. is 

 identical with Pilosace algeriensis (Fries) Quel. 



Stropharia epimyces does not appear to be very rare, for it has 

 been found in the United States : by Peck ^ at North Greenbush 

 (New York State), by Atkinson ^ at Ithaca (New York State), by 

 Goodwin ^ at Port Huron (Michigan), by Sherman and McKenna ^ 

 near Madison (Wisconsin), by O. L. Taylor ^ on Manitoba Island, 

 White Bear Lake (Minnesota), and by McDougall i° at Urbana 

 (Illinois) ; and it has also been found in Canada : by Pennington ^^ 

 at Winnipeg (Manitoba), by J. H. Faull ^^ at Toronto, and by W. S. 

 Odell 1" at Ottawa (Ontario). I myself have not yet found it in 



1 C. H. Peck, "Report of the State Botanist," N.Y. State Mus. Nat. Hist. 

 Bull. 133, 1884. 



~ G. F. Atkinson, " Preliminary Notes of Some New Species of Fungi," Jourmil 

 of Mycology, vol. viii, 1902, pp. 110-119 ; also " A Mushroom Parasitic on Another 

 Mushroom,"^" The Plant World, vol. x, 1907, pp. 121-130. 



^ W. B. McDougall, " Development of Stropharia epimyces,'" Bot. Gazette, 

 vol. Ixvii, 1919, pp. 258-263. 



* E. T. Harper, " The Probable Identity of Stropharia epimyces with Pilosace 

 algeriensis,'''' Mycologia, vol. v, 1913, pp. 167-169 ; also " Two Parasitic Mushrooms," 

 Mycologia, vol. viii, 1916, pp. 65-71. Harper points out that Lanzi in his Fungi 

 inangerecci, etc. (Rome, 1896-1902, Plate 67, Fig. 3), has published an illustration 

 of P. algeriensis which, unperceived by Lanzi, appears to show that fungus as a 

 parasite upon the fruit-body of a Coprinus. However, although C. comatus and 

 C. atramentarius are so common in Europe, no European mycologist has yet recorded 

 finding P. algeriensis as a parasite upon them. 



5 C. H. Peck, loc. cif. 



6 G. F. Atkinson, 1907, loc. cif. 



■^ A. W. Goodwin, vide C. H. Kauffman's Agaricineae of Michigan, 1918. 

 vol. i, p. 254. 



8 Helen Sherman, " The Host Plants of Panaeolus epimyces," Journal of 

 Mycology, vol. xi, 1905, pp. 167-169. 



^ O. L. Taylor, in Atkinson, 1907, loc. cit., p. 127. 



^^ W. B. McDougall, loc. cit. ; also " Some Interesting Mushrooms of Champaign 

 County," Trans. Illinois Acad, of Sci., vol. ix, 1916, pp. 125-128. 

 1^ L. H. Pennington, vide C. H. Kauffraan, loc. cit. 

 ^^ Information given verbalh'. 



