508 The Cryptogamous Plants of Dr. Roxburgh, 



as much more,) smooth ; pinnae Hnear ; the lower pair some- 

 times doubled, deeply (almost quite to the nerve,) pinnatifid ; 

 segments thereof falcate, obtuse, entire, the terminal one 

 ensiform, and when barren crenate. 

 Nat. of the Moluccas. 



14. P. gracilis, R, 



Stipes smooth ; fronds decursively, suboppositely bipin- 

 nate ; pinnae few and remote ; barren leaflets elhptically- 

 lanceolar, and acutely serrate ; fertile linear, and many times 

 longer than the barren. 



A terrestrial species, a native of Chittagong. The fertile 

 fronds are very slender, and about 20 inches high ; the 

 barren little more than half of that. 



15. P. tripinnatifida. R, 



Stipes polished ; fronds (3-4 feet high,) smooth, opposite- 

 ly tripinnatifid ; pinnae broad-ensiform, with more or less 

 deep, rounded triangular breaks and lobes. Fructifications 

 in a very completely continued line, round every part of the 

 margin. 



Nat. of the Moluccas. 



16. P. pedatifida. R. 



Stipes trifid, with the lateral branches again bifid; or 

 trifid, all the divisions thereof bipinnatifid ; pinnules linear, 

 deeply pinnatifid ; segments thereof linear-oblong, obtuse. 

 Fructifications in a continued line, on the sides of the seg- 

 ments. 



Nat. of Amboyna, and the Malay Islands, where it grows 

 to be several feet high. 



17. P. daucifolia. R. 



Stipes smooth; fronds ovate, (about 12 inches high,) al- 

 ternately superdecompound ; its ultimate divisions minute 

 and linear, almost entirely occupied with the fructifications. 



Nat. of the Eastern parts of Bengal. 



18. P. succulenta. R. Icon. Roxb. 14, t. 108. Acrosti- 

 chum thalictroides et sihquosum. Roxb. Ceratopteris thahc- 

 troides. Brongn. Wall. Cat. 61, No. 81. 



