The Cryptogamous Plants of Dr. Roxburgh. 491 



21, P. cuspidatum, R. P. urophyllum. Wall. Cat. 64-, No. 

 299, (quod nomen delendum.) 



Fronds alternately pinnate, (3-6 feet high ;) leaflets alter- 

 nate (6-12 inches long,) linear-lanceolate, cuspidate, bluntly 

 serrate, smooth; the whole nearly equal in size. Fructifi- 

 cations in lines parallel with the veins, and running their 

 whole length. Involucres none visible. 



Nat. of Pinang, under the shade of lofty trees. 



22. P. semisagittatum. R, 



Base of the stipes scaly; fronds (6-18 inches high,) sub- 

 oppositely-pinnate; leaflets serrate, smooth, the superior 

 ensiform ; the lower small, and triangular. Fructifications 

 in numerous dots, parallel with the nerve of the segments. 

 Involucres round, with a fissure on one side. 



Nat. of the Delta of the Ganges, Chittagong, &c. 



2S. P. involucratum. R. 



Stipes smooth ; fronds alternately pinnate ; leaflets remote, 

 petiolate, lanceolar, cuspidate, margins waved. Fructifica- 

 tions in numerous spots, over the whole disk. Involucres 

 very large, round, entire, permanent. 



Nat. of Amboyna. 



24. P. nudatum. R. 



Fronds alternately pinnate ; leaflets rather remote, sessile, 

 smooth, incurve-ensiform, fine taper-pointed, rounded at the 

 base, margins very equally serrate, the terminal one larger, 

 but not more deeply serrate than the rest. Fructifications 

 in numerous minute dots, in lines parallel with the veins. 

 Involucres none. 



Nat. of Amboyna. 



25. P. scabrum. R. Wall. Cat. 66, No. 2225. 



Stipes scabrous, and hirsute ; fronds (6-12-feet high,) alter- 

 nately pinnate; leaflets linear, most long, smooth on both 

 sides, gash-serrate, fine-entire-pointed. Fructifications in 2 

 lines, of numerous, round spots, close to the nerves of the 

 serrature of the pinnae. Involucre uncertain. 



