GUIDE TO THE RECOGNITION 



OF THE 



PRINCIPAL ORDERS OF CRYPTOGAMS 



COMMONER AND MORE EASILY DISTINGUISHED 



NEW ENGLAND GENERA 



Wliti) a JFull ©lossarp. 



BY 



FREDERICK LEROY SARGENT, 



TEACHER IN* THE SUMMER COURSE IN BOTANY AT HARVARD UNIVERSITY. 



CAMBRIDGE: 



CHARLES W. SEVER. 

 Bniuerfittp -Bookstore. 



1886. 



LIBRARY 

 NEW YORK 



BOTA\k; AL 

 GARI); 



