CATALOGUE OE PERNS. 
13 
leucorhizon, Kit. Polypodium amphostemum, Kunze .— 
Tropical America. 
3. C. rigidum, J. Sm. — Fronds contiguous, stipitate, linear- 
lanceolate, base attenuated, 12-15 inches long, f of an inch 
wide, erect, thick, coriaceous, smooth ; margin thickened. 
Veins immersed. Sori irregular. — Tropical America. 
4. G. csespitosmn, Link. Polypodium csespitosum, Link; 
Metben. Fil. Kort. Leif. t. 2>^.f. 4, 5. — Tropical America. 
5. C. repens, Presl ; Kook. Gen. Fil. t. 71, A. Polypodium 
repens, Linn.; Flum. Fil. t. 134. — Tropical America. 
6. C. Fhyllitidis, Presl. Polypodium Phyllitidis, Linn. ; 
Plum. Fil. t. 130. — Tropical America. 
7. C. mitidum, Presl. Polypodium nitidum, Kaulf. — Tropical 
America. 
Fronds pinnate. 
8. C. decnirrens, Presl. Polypodium decurrens, Badd. Fil. Br. 
t. 33. Polypodium polyanthos, Kort . Brux. — Brazil. 
20. BEYMAEIA, Bory ; J. Sm. 
(Drynaria § vera, J. Sm. Gen. Fil. Drynarise sp., Fee . Phyma- 
todis sp., Presl. Polypodii sp., Auct.) 
Fronds rigid ; the sterile (when present) sessile, broad cordate, 
sinuose or laciniated; the fertile stipitate or sessile, pinnatifid 
or pinnate, rareiy simple, the segments articulated with the 
rachis ; when sessile, the base is similar to the special sterile 
frond. Veins external, elevated, compound anastomosing, form- 
ing quadrate or hexagonal areoles ; primary veins costseform or 
obsolete. Sporangiferous receptacles compital. Sori round, 
small, numerous, and irregular, or transversely or obliquely serial, 
sometimes confluent, forming a linear sorus between the costse- 
form veins. 
* Sori transversely uniserial. 
t Fronds pinnatifid. 
1. D. propinqua, J. Sm. Polypodium propinquum, Wall. 
Phymatodes propinqua, Presl. — East Indies. 
