A 
CATALOGUE OF FERNS. 
«. 
Order I. POLYPODIACEiE. 
Sporangia globose or oval, unilocular, pedicellate or 
sessile, furnished with a vertical or transverse, rarely 
oblique, articulated ring. 
# Sporangia opening transversely . Ring vertical or 
oblique. 
Tribe I. POLYPODIES, X Sm. 
Sori round, oblong, or linear, destitute of a special indusium. 
Bit. I. Er@m®ferya 5 J. Sm. 
Fronds in vernation lateral, solitary, attached to the axis (rhi- 
zome) by a special articulation. 
1. FOLYPOBIUM, J. Sm.; Linn. in part. 
Fronds pinnatifid or bi-tripinnatifid. Veins forking, free, the 
lower exterior venule bearing the sporangia on its apex. Sori 
round or oblong, transversely uniserial. 
1. P. pectinatum, Linn.; Flum. Fit. t. 83. — Tropical America. 
2. P. Faradisese, Lang, et Fisch. Ic. Fit. t. 11. — Brazil. 
3. P. JSchkuhrii, Radd. Fit. Bras. t. 27. — Brazil. 
B 
