516 The Cryptogamous Plants of Dr, Roxburgh. 



Nat. of the eastern parts of the Delta of the Ganges. 

 Thence introduced into the Botanic Garden, by Dr. Bu- 

 chanan. 



Root perennial, as thick as a rattan, hairy, creeping un- 

 der the surface of the earth, from it descend many radical 

 fibres. 



Stipes suberect, of a pale green colour, and tender substance, 

 hairy ; general length, frond included, from 2 to 3 feet. 

 Fronds alternately bipinnate, hairy. 

 PinncB 8-10 pair, alternate. 



Pinnules alternate, numerous, smaller towards the apex, 

 gashed, or pinnatifid, with the segments rounded and cre- 

 nate. 



Fructifications from 1 to 5 distinct spots, near the margin 

 of each segments of the (fertile) pinnulae. 



Involucrum, a single, ciliate, reniform scale, separating 

 outwards. 



Capsules numerous, and in succession. 



Note. — The habit of this Plant is very different from the 

 firm, polished, compact texture of this genus, as mentioned 

 by Dr. Smith. 



8. D. trape^iformis. R. 



Stipes smooth, nearly as long as the ovate-oblong, alter- 

 nately bipinnate and tripinnatifid fronds {\-2 feet high;) 

 leaflets subtrapeziform, obtuse, and more or less divid- 

 ed into rounded segments. Fructifications in, generally, a 

 single spot, near the bottom of the fissures of the ultimate 

 segments. Involucre opening on the anterior margin, form- 

 ing a pouch. 



Nat of the Moluccas. Is of a soft texture, tending to be 

 villous. 



9. D, moluccana, R. Wall. Cat. 66, No. 2219. 



Stipes as long as the leaves, 4-sided, smooth. Fronds 

 (1-2 feet high,) ovate, alternately bi-tripinnate ; leaflets Ian- 



