PART n. 



GENERAL ABEANOEMENT AND CUAEACTEKS OF TRIBES AND GENERA, 

 WITH REMARKS ON TUEIR RBLATIONSHll-' ONE TO ANOTHER, 



ABSTRACT OF THE ARRANGEMEIS^T. 



1. — Evolution of the Feonds ctecinate. 

 This includes all Ferns except the small tribe Opluuijlos- 

 sacecc, in which the vernation is straig'ht. 



A. Ring- of Sporangia vertical (Order Polypodia- 

 t:£'<e, li. Br.) 



Division I.— EREMOBRTA. 



Fronds solitarj-, lateral, and articulate with the caudex. 



Trilf 1. — Oleandre-E. 

 Gen. 1. Oleandra, Oav. 



Trile i. — Davallie. 

 Gen. 3. Davallia, Sm., Huniata, Cav., Lcucostegia, Pr. 



Tribe 3. — Polipodie.e. 

 Gen. 28. Ex. Fulypodiuin, Phi/maiodes, Drynaria. 



Tribe 4. — HiMENOLEPiDiiE. 

 Geu. C. Ex. DrymujlossuDi, Eymeaolepis, Iscurodmia. 



Tribe 5. — Plaiyceee.e. 

 Geu. 1. PUiiiji'.eriam. 



