514 The Cryptogamous Plants of Dr. Roxburgh. 



Nat. of Prince of Wales' Island, and found by Mr. W. 

 Roxburgh, running to a great extent up the trunks of 

 trees. 



2. D. longifolia. R. 



Fronds Hnear, pectinato-pinnatifid, firm, though a Uttle vil- 

 lous on the upper surface ; segments linear, obtuse, with 

 about three fructifications just under their apices. Involucre 

 like a pouch. 



Found, by Mr. W. Roxburgh, growing on well-shaded 

 rocks on Prince of Wales' Island. 



3. D. pectinata. Smith. 



Creeping; petioles scaly. Fronds (about 6 inches high,) 

 ovate-oblong, firm, and smooth, to the nerve pectinato-pin- 

 natifid ; segments Hnear, obtuse, almost entire. Fructifica- 

 tions in a row of numerous approximated dots, between the 

 nerve of the segment and their margin. Involucres like 

 scales. 



Found on the northern boundary of Oude, by A. Gott. 

 Filix polypodium, &c. Pluk. t. 289,/. 1 and 2, are ex- 

 ceeding like my plant. 



4. D. cordifolia. R. 



Creeping, petioles smooth, fronds about 6 inches high, 

 long-cordate, polished, and very firm, oppositely pinnate ; 

 leaflets confluent falcate, obtuse, deeply crenate ; the lower 

 pair semicordate. Fructifications marginal, with very dis- 

 tinct, roundish, hard scaly involucres. 



Nat. of the mountains north of Rohilcund. The habit of 

 this species is remarkably hard and smooth. 



5. D. serrata. R. 



Rachis 3-sided. Fronds alternately pinnate ; leaflets li- 

 near, firm and smooth, serrate. Fructifications solitary at 

 each serrature. Involucre forming a small pouch, after the 

 capsules expand. 



Found on Prince of Wales' Island, under the shade of 

 trees, by Mr. W. Roxburgh. 



