polypodiace^:. 217 



suboppositis patentibus lineari-ensiformibus obtusis margine integer- 

 rimis basi obliquis cuneatis superne subauriculatis ; soris continuis ; 

 indusio proprio margine subcequali. 



Hab. Feejee Islands : in open grassy places. 



Khizoma short and creeping, about the thickness of a crowquill. 

 Fronds few, erect and tufted, from 10 to 12 inches long, lanceolate, 

 smooth, pinnate, with a very slender, smooth, triangular stipe of about 

 the same length, bearing a few scattered, reticulated, slender scales at 

 base. Pinnce distant, subopposite, linear-ensiform, seated on a short 

 petiole, 15 to 30 in number, 2 to 3 inches long by 3 lines broad, 

 obtuse at the point, and with an oblique, rather bluntly wedge-shaped 

 base, the superior half with a round auricle, the texture inclining to 

 membranaceous. Venation rather obscure, the venules slender and 

 forming elongated oblique areoles. Sori continuous; the special indu- 

 sium nearly equal with the margin. 



This is related to Lindscea ensifolia, Swartz, as figured by Hooker 

 and Greville in their Icones Filicum ; but it differs in the longer and 

 broader fronds, and the more numerous pinna?, which have an ob- 

 lique and subauriculate superior base. It is also closely allied to the 

 Schizoloma Billardieri of Gaudichaud. 



Plate 30. — Fig. 1. Frond, of the natural size. 1 a. Section of a 

 pinna, with the indusium turned back, to show the sporangia. 1 b. 

 Scales from base of the stipe. 1 c. A sporangium. 1 d. Sporules. — 

 More or less magnified. 



69. D I E L L I A,* Nov. Gen. 



Costa pinnarum centralis. Venoe furcatoe: venulas in areolas elongatas 

 obliquas anastomosantes, apicibus liberis vel juxta marginem per recep- 



* The genus is dedicated to the memory of the Rev. John Diell, late Chaplain for 

 American seamen at Honolulu ; whose zealous endeavours in forming collections, and in 

 making known the Natural History (especially the Botany and Conchology) of the 

 Sandwich Islands, well deserve this commemoration. 



55 



