and in those cases wliere by proper authority such names have 

 been reformed, the former name is inserted in italics. 



Dr. Vasey's various publications liave determined the arrange- 

 ment, &c., of Gruminea ;" Lesquereux' and James' that of the 

 Mnsci ;2 the late Prof. Tuc^kerman the Lichenes ;' Mr. M. C. 

 (!ooke's arrangement of the Finigi* lias been followed, with revis- 

 ions by Mr. Peck and Mr. Ellis; T)r. Farlovv has been the guide for 

 the Marine Algce/' and Rev. Mr. Wolle for the Fresh Water AlgcR.^ 

 It should be noted that for convenience' sake the Marine and 

 Fresh Water Algie are separated, and in the one is followed Dr. 

 Farlow's ascending, and in tlie other Mr. Wolle's descending 

 series. Although unscientific, it was believed that there were suf- 

 ficient advantages in not merging all the Algety under one syste- 

 matic arrangement. The arrangement of the Diatomacece^ is that 

 in Pritchard. We follow Prof. Underwood's arrangement of 

 Hepaticoi.'^ 



The Mimci were determined or previous determinations verified 

 by Mr. Les(iuereux. Some of them, however, and all the Hei)a- 

 ticie, passed through the hands of the late Mr. Coe F. Austin. 



The late Prof. Tuckerman very kindly determined, or verified, 

 the Lichenes, and all herein named passed under his examination. 

 The Fungi were all named by the late Rev. Dr. M. A. Curtis, or by 

 him in connection with Dr. Berkely; the revision of the same by 



1 Descriptive Catalogue of United States Grasses, 1884. 



2 Manual of the Mosses of North America, 1884. 



' Synopsis of N. Am. Lichens. Parti. 1882. Genera Lichenum, 1872. 



* Handbook of British Fungi, 1871. 



5 List of the Marine Algse of the United States, 1875. Marine Algae of New 

 England and adjacent coast, 1881, &c. 



cDesmids of the United States, 1884, and Supplement, 1887. Fresh Water 

 Algae of the United States, 1887. 



'Pritchard's Infusoria, 1861. Article Diatomaceae. 



''Descriptive Catalog of the North American Hepaticse, north of Mexico, 1885. 



