136 ASPLENIUM, § EUASPLENIUM. 



dimidiate below, in the lower half oliliquely cuneate into a 

 very short petiole superior base above truncate scarcely au- 

 ricled but the lower half of the superior margin is inciso- 

 lobate the rest of the superior margin and the apex distantly 

 and obtusely serrated, from below the middle of the frond 

 the numerous pinnoc gradually become shorter and smaller 

 and the lowest ones subpetiolatcd green scales, veins subfla- 

 bellate nearly erect (not spreading) all parallel, the costa 

 veniform, sori 5-6 parallel with tlie central vein or costa 

 or nearly so linear not extending to the superior base, in- 

 volucre very narrow firm, costa beneath and stipes slightly 

 paleaceo-setose. (Tab. CLXXXVI.) 



Ilah. Banks of the Dahunibuy River, Borneo ; elev. 2000 feet above the level 

 of the sea, Hugh Low, Jun., Esq. — I know of no Asplenium which has any near 

 affinity with the present species, of which I regret to possess only one specimen, 

 and that deprived of the extreme apex, and of caudex and of the low er portion of 

 the stipes. But there is enough to show that the species is a very distinct one in 

 form and circumscription, and in the nature of the pinna;. The general 

 form and size of the pinnas induce me to place this species in the Resectmn- 

 group, but their texture (not the colour), and the almost erect and parallel sori, 

 bring it near the Falcatum-%ron\^. In the very elongated frond, in the very nu- 

 merous and crowded and alrao,-t imbricated pinn;c, and in their gradual diminu- 

 tion in size from below the middle to the base of the frond, it is quite unlike any 

 other species of the genus known to me. 



(Trichomanes-^rro!*;?. Type Aspl. Trichomanes, Z-. — Pinnate. Pinnce among the 

 smallest of the sections, with the inferior base rarely excised as in the 

 Resectum-^/'Oiy^. So7ne species, hoivever, border on the smaller of the Salici- 

 foMum-group ; others upon the Furcatum-^r/'o^i/;. Such transition-species are 

 conimon to all the groups.) 



95. A. (Euasplenium) Trichomanes, L. ; caudex short thick 

 densely fibrous, stipites 1-4 or 5 inches long numerous tufted 

 dark-castaneous or black-ebeneous glossy margined, fronds 

 4-6-12 inches long linear-lanceolate coriaceo-membranaceous 

 dark dull-green paler beneath pinnated, pinnae numerous 

 horizontal scarcely petiolate, lower ones distant and smaller, 

 oval or obovate or oval-oblong obliquely cuneate at the base 

 superior base rounded sometimes truncated and even auricu- 

 late sometimes excised at the inferior base, the margin entire 

 or irregularly crenato-serrate, costa subcentral veins few dis- 

 tant oblique generally forked above the middle, sori oblique 

 in two equal series, involucres pale-brown membranaceous 

 entire or jagged. — Linn. Sp. PL p. 1540. in part. Huds. 

 Angl. p. 452. Sm. Engl. Bot. t. 567. Sw. Syn. Fil. p. 80. 

 Schk. Fil. p. 69. t. 74. Hook. Fl. Tasm. ii. p. 145. A. Gray, 

 Man. Bot. p. 627. Metten. Aspl. p. 138. Pappe and Raw- 



