A PROVISIONAL KEY 



TO THE GENERA OF 



HYMENOMYCETES, 



(MUSHROOMS, TOADSTOOLS, ETC.) 

 BY 



Geo, F, Atkinson and Bertha Stoneman, 



ITHACA, N. Y. 



Oct 1898 



A limited number of copies are published, not for general distribution. 



Price, 50 cts. 



May be obtained from the Cambridge Botanical Supply Co. , 

 Cambridge, Mass. 



A\. 



NOTE— Genera found in North America are in capitals. 



In the arrangement of the I^eucosporae, Saccardo.has been largely followed, 



but the remaining portion has been entirely recast. 

 The senior author will be pleased to receive corrections. 



