126 Mycologia 



perhaps less so than in the American form " columbiana." (See 

 remarks under the latter.) 



GoMPHiDius spp.— One finds occasionally a few specimens 

 rather small and slender, which are hard to place. Whether some 

 of these are undescribed or are abnormal cannot be determined 

 with the material and notes on hand. Two such forms are men- 

 tioned in Agaricaceae of Michigan I, p. 171-2. I have others 

 from the Adirondack Mountains, and from North Carolina. 

 The rarity of these, if they are autonomous species, and the 

 chances of finding them when developed under favorable weather 

 conditions or when not too old makes it difficult to "get a line 

 on them." 



Literature Cited 



1. Atkinson, G. F. Mushrooms. Ed. 3. 1911. 



2. Berkeley, M. J. Outlines of British fungology 196. 1860. 



3. Bresadola, G. Fungi tridentini 2: 95. 1892. 



4. Fayod, V. Ann. Sci. Nat. VII. 9: 386-388. 1889. 



5. Fries, E. M. Systema Mycologicum. 1821. 



6. . Hymenomycetes Europaei. 1874. 



7. . Monographia Hymenomycetum sueciae. 1863. 



8. Kauffman, C. H. Agaricaceae of Michigan 1: 169. 1918. 



9. Murrill, W. A. Mycologia 4: 306. 1912. 



10. . Mycologia 14: 121-125. 1922. 



11. Peck, C. H. Ann. Rep. N. Y. State Mus. 48: 110. 1897. 



12. Rea, C. British Basidiomycetes 324-326. 1922. 



13. Ricken, A. Die Blatterpilze Deutschlands 1: 8-9. 1914. 



14. Schweinitz, L. D. von. Schr. Nat. Ges. Leipzig 1: 19-131. 1822. 



15. ZeUer, S. M. Mycologia 14: 191. 1922. 



University of Michigan, 

 Ann Arbor, Michigan 



