184 ASPLENIUM, ^ EUASPLENIUM. 



gregate a span or more high stout lurid-brown, fronds H-2 

 feet long broad ovato-lanceolate acuminate subcoriaceo-meni- 

 branaceous dark brown when dry bipinnate pinnate towards 

 the apex, pinnai horizontally patent subsessile broad-lanceo- 

 late acuminate pinnatifid at the point, pinnules straight or 

 subfalcate or even decurved approximate venoso-striate an 

 inch long from a broad unequally cuneate base lanceolate or 

 rhomboideo-lanceolj^e acuminate (sometimes rather finely so) 

 incisedly pinnatifid superior base truncate auriculate, inferior 

 more or less excised, superior pinnfe small pinnatifid with a 

 separate auricle at the base, veins pinnate forked obliquely 

 erect in the broader pinnules more flabellate with the costa 

 indistinct, sori copious linear in two parallel oblique lines 

 extending to the margin, in the auricles sometimes dipla- 

 zioid, rachises terete, smooth. (Tab. CCVI.) — Hook, et Am. 

 Bot. Beech. Voy. p. 106. Brack. Fit. U. S. Expl. Exp. p. 164. 

 Metten. Asp/en. p. 159. Moore, Ind. Fil. p. 109. 



Ilab. Sandwich Islands; Oahu, Lay and Collie, M'Rae: abundant on the high 

 mountains above Honolulu, Brackenridge. — Although undoubtedly variable in the 

 form of the pinnules, longer or shorter, broader or narrower, there is no difficulty 

 in recognizing this species : the only question is, whether, in consequence of a 

 double sorus seen here and there on the auricles, it may not be right to refer the 

 plant to the diplazioid group of Asplenium. 



168. A. (Euasplenium) Jamesoni, Hook. ; stipes com- 

 pressed and pale brown (as is the lower portion of the main 

 rachis), frond 14 inches long 10 broad ovate acuminate firm 

 subcoriaceo-membranaceous bipinnate pinnate above the 

 apex pinnatifid, pinnae petiolate, pinnules 1-1 i inch long 

 sessile (the lowest ones only subpetiolate) distant all from a 

 cuneate base lanceolate acute or obtuse inciso-pinnatifid, 

 teeth or segments subacute or obtuse and 2-toothed, veins 

 pinnated remote erecto-patent, sori in two series close to 

 and parallel with the costa not extending to the segments 

 large occupying the whole disc of the pinnules linear-oblong, 

 involucres pale brown very thin and membranaceous, partial 

 rachises and upper half of main rachis green and singularly 

 ancipiti-compressed a line wide costate. (Tab. CCV.) 



Ilab. Guaiaquil, Ecuador, Jameson. — One of the most distinct of all Asplenia, 

 and a very beautiful species, reniarkabln for the very broad (or they may be called 

 alatc) partial rachises, and for the large sori arranged in two parallel lines close 

 to the costa of the pinnules. 



169. A. (Euasplenium) pseudo-nit idu7n, Raddi ; stipes a 

 foot or more long and as well as the rachises purplish-black 



