1 64 FERNS IN THEIR HOMES AND OURS. 



The Selaginellas of the last division are rather 

 hard to manage, and are only desirable as curious 

 plants. 



There are very few works available for the de- 

 termination of the species of Selaginella. Spring's 

 "Monograph of the Lycopodiaceae " is the authority 

 most in use. A few plates of different species 

 of Selaginella are given in some of the works 

 of Sir W. J. Hooker : others may be found in 

 the horticultural publications. For investigating 

 the structure of these plants, Sachs, Hoffmeister, 

 and LeMaout and Decaisne, may be consulted. 



