504 The Cryptogamous Plants of Dr. Roxburgh. 



3. P. lobata. R. • 



Petioles smooth, nearly as long as the thin, polished, 2 or 

 3-lobed fronds. 



Nat. of the Moluccas. 



4. P. vittata. Osb. It. t. 4. Icon. Roxb. 14, t. 105. Pteris 

 longifolia. Linn. Wall. Cat. 62, No. 111. 



Stipes alternate, from a creeping root, polished. Fronds 

 alternately pinnate, (2-5 feet high) ; leaflets sessile, ensi- 

 form, all the sterile part have their margins waved and 

 spinulose. Fructifications occupy the lower two-thirds, or 

 more, 



Nat. of the Delta of the Ganges, ^c. Fructifies in the 

 Botanic Garden most part of the year. 



Root (or rather stem) creeping under ground. 



Stipes springing alternate from the creeping root or 

 stem, polished, channelled, dark brown ; whole length, 

 frond included, from 2 to 4 feet. 



Fronds pinnate with an odd one, 2-S feet long, smooth. 

 Pinnce sub-opposite, sessile, ensiform, tapering to a very 

 long fine point ; margins of the fertile (pinnae as far as they 

 are so) straight and entire, of the sterile waved and serru- 

 late, the serratures often end in sharp cartilaginous points ; 

 all are smooth, and shining on both sides. 



Fructifications in an uninterrupted marginal line, extend- 

 ing from the base for about two-thirds or more of the 

 (fertile) pinnae. 



Involucrum from the margin of the pinnae turned in, un- 

 interrupted, separating on the inner side. 



To Pteris ampleosicauUs (now before me) : this comes the 

 nearest of any other I have hitherto met with, yet differs 

 essentially. 



1st. Here (in P. vittata) the stipes rise single from the 

 creeping stem, and are long and polished. There (in P. 

 ample xicaulis) they grow in tufts and are short, and when 

 old, scabrous ; when young, woolly. 



