VERMONT MOSSES. 6 



as there is no recent authoritative publication including all of 

 this group. The arrangement of the species in genera follows, 

 so far as is possible, the recent monographs and an attempt has 

 been made to arrange the families according to their natural 

 relationships. Any student of North American mosses knows 

 how great is the confusion in the systematic arrangement of the 

 pleurocarpous mosses. As the present list is not written for the 

 purpose of promulgating any new system of classification but as 

 an aid to the study of our more common mosses, it is hoped 

 that the discrepancies in this line will be condoned as a neces- 

 sary evil. 



With the exception of the species under the genus Hypnum 

 the nomenclature is believed to conform to the Rochester Code. 

 In that composite genus the nomenclature of the Manual of the 

 Mosses of North America of L,esquereux and James is retained 

 on account of the changes which must necessarily follow a re- 

 vision of this group, and also because of the author's decided 

 opinion that a list of this sort is not the place for the publica- 

 tion of a new systematic arrangement. Whenever the name of 

 a plant has been materially changed, the Manual synonym is 

 inserted in italics. 



Dr. G. N. Best has very kindly revised the MS. for the 

 lycskeaceae. My thanks are also due to Prof. L. R. Jones, Miss 

 Martha G. Tyler (Mrs. M. H. Buckham), Mr. E. Faxon, Mr. 

 C. G. Pringle, Mrs. E. G. Britton, Mr. M. A. Howe, and others 

 for assistance and encouragement in the preparation of this list. 



As the list is provisional and necessarily incomplete, addi- 

 tional data will be gratefully received. 



A. J. G. 



State Normal School, 



Plymouth, N. H., 

 Nov., 1897. 



