THE FERN'S PLACE IN NATURE. 6 1 



MARTIN (George). The Phyllostictas of North America. 

 Jour. My col. , II, 13-20, 25-27 (1886). 



Enumeration and Description of the Septorias of North 

 America. Jour. Mycol., Ill, 37-41. 49~53> 61-69, 73-82, 85-94 

 (1887). 



SACCARDO (P. A.). Sylloge Fungorum, in; iv ; Addi- 

 tamenta ; X, 100-739. 



Hepaticse. 



UNDERWOOD (L. M.). Hepaticae, in Gray : Manual of 

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Descriptive Catalogue of the North American Hepaticae, 

 north of Mexico. Bull. Illinois State Lab. Nat. Hist., n, 1-133 

 (1884). 



Sphagnaceae. 



WARNSTORF (O. Contributions to the knowledge of the 

 North American Sphagna. Bot. Gazette, XV, 127-140, 189-198, 

 217-227, 242-255 (1890). 



BRAITHWAITE (R.). The Sphagnaceae or Peat Mosses of 

 Europe and North America. (1880.) 



Musci. 



BARNES (Charles R.). Artificial Keys to the Genera and 

 Species of Mosses. Trans. Wisconsin Acad. Science, VI II, 

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LESQUEREUX (Leo) and JAMES (T. P.). Manual of the 

 Mosses of North America. (1884.) 



For any really satisfactory work in this group of plants the 

 following more expensive publications are essential : 



SULLIVANT (W. S.). Icones Muscorum and Supplement. 

 2 vols. (1864, 1874). 



BRAITHWAITE (R.)- British Moss Flora. In course of 

 publication in parts. 



BRUCH (Ph ), SCHIMPER (W. P.), et GUMBEL (Th.). Bry- 

 ologia Europaea. 6 vols. 4to. (1835-1855.) Suppl. (1864-66.) 



138. The literature of the Pteridophytes has been given 

 elsewhere in this volume, and that of the Spermaphytes is 

 better known and need not be mentioned here. 



