POLYPODIACE.E. 253 



Although we have affixed the mark of doubt, our plant corresponds 

 to Blume's description : still, in the absence of a more detailed account, 

 or a figure of his plant, we cannot he perfectly assured. 



17. ASPLENIUM PROTENSUM, Kaulf. 

 Asplenium protensum, Kaulf. Enum. Fil. p. 167. 



Hab. Sandwich Islands ; on Oahu and Hawaii. 



This species has a stipe of about 8 inches in length, smooth, 

 angular, and of a dark brown colour, with a broad and shallow channel 

 in front. Fronds 12 to 15 inches long, pinnate. Pinnse li inches 

 distant, subalternate, petiolate, smooth, coriaceous, 3 or 4 inches long 

 and 5 or 6 lines broad, lanceolate and attenuate ; the inferior ones 

 crenate ; the superior serrate ; the base unequal and cuneate, its upper 

 side frequently rounded: petiole compressed and decurrent on the 

 rhachis, its posterior side round, with a narrow channel in front. Sori 

 long, oblique and parallel ; the pale entire indusium in an advanced 

 state becoming reflexed ; the sporangia then confluent. 



18. Asplenium enatum, Sp. Nov. (Tab. 21.) 



A. stipite lozvi angulato; frondibus glabris pinnatis; pinnis petiolatis 

 alternis distantibus membranaceis oblongo-lanceolatis incequaliter ser- 

 ratis basi oblique cuneatis ; rhachi costaque proliferis ; soris obliquis 

 remotis; indusio angusto-lineari integer •rimo. 



Hab. Sandwich Islands : on the Kaala Mountains, Oahu. 



Whole plant rather flaccid. Stipe 10 to 12 inches long, somewhat 

 angular, smooth. Fronds 1 J feet long, smooth, simply pinnate. Pinnce 

 alternate, on a short petiole, the lower ones distant, towards the apex 

 a little more approximate, membranaceous, 3 to 3i inches long, by 6 

 to 8 lines broad, oblong-lanceolate, bluntly and irregularly serrate; the 

 base unequal and cuneate, the superior half semitruncate. Point of the 

 rhachis and costa on the upper side proliferous. Sori distant, oblique, 



39 



