polypodiace^e. 59 



Rootstock creeping, about the thickness of a goosequill, closely covered 

 with oblong, attenuated scales. Fronds distant, smooth, and of a firm 

 consistence, erect, about 10 inches in length, and li inches broad, 

 oblong-lanceolate, attenuated very gradually into a narrow point; the 

 base decurrent for a short distance on the stipe ; which is smooth, semi- 

 terete, angular in front, and about 4 inches long. Sori broad, par- 

 tially interrupted, occupying nearly the whole of the space between 

 the oblique primary veins, and extending outwards to the thickened 

 crenate-undulate margin. 



The sori in this species are broad, and sometimes divided into round, 

 ovate, or oblong heaps, showing an affinity with many species of Dry- 

 naria; but the more usual form which they present is oblong-linear 

 or linear ; we have therefore referred the plant to Selliguea. 



20. T M N I T I S, Sw., Fresh 

 (TLenitidis Spec. Willd. & Auct.) 



1. Tjenitis blechnoides, Sw. 



Tcenitis blechnoides, Sw. Syn. Fil. p. 24 & 220; "Willd. Spec. PI. 5, p. 135; Blume, 

 Enum. Plant. Jav. p. 108; Presl, Tent. Pterid. p. 226, t. 10, f. 4; Hook. Gen. 

 Fil. t. 77, B. 



Hab. Singapore. 



21. T^NIOPSIS, J. Sm. 



(Yittari^! Spec. Auct. Haplopteridis Spec. Presl. TLeniopteris, Hook.) 



The species belonging to this genus are of the same habit as those 

 of Vittaria, from which they differ only in having the line of sori 

 situated a little within the margin. 



