PART AL 
GENERAL ARRANGEMENT AND CHARACTERS OF TRIBES AND GENERA, 
WITH REMARKS ON THEIR RELATIONSHIP ONE TO ANOTHER. 
H 
ABSTRACT OF THE ARRANGEMENT. 
| 1,—Evo.urion or THE FRONDS CIRCINATE. 
This includes all Ferns except the small tribe CS 
sacee, in which the vernation is straight. ` 
A. Ring of Sporangia vertical (Onder Po lypo: 
cee, R. Br.) ex 
REES x 4 cdi 
| Fronds Solitary, lateral, and articulate with the caudex. 
Tribe 1.—OLEANDRER. 
Gen. i; Oleandra, Cav. 
Tribe 9.—DAvVALLIE. 
Gen. 3. Davallia, Sm., Humata, Cav., Leucostegia, Pr. 
; Tribe 3.—POLYPODIEE. Ss ! 
G 28 Ex. Polypodium, Phymatodes, Drynaria. 
-Tribe 4.—HYMENOLEPIDIE. D 
Es. Ce Lena Neurodium. 
