Plants evergreen. Rhizome ascending, short, rhizome apex and stipe base densely scaly; scales brown, lanceolate, up to 1 cm × 1.5 mm, membranous, weakly shortly serrulate or entire, long acuminate. Fronds 25-65 cm; stipe stramineous, 6-14 cm, 1-2 mm in diam. at base, upper stipe base covered with lanceolate and filiform scales. Lamina 1-pinnate, narrowly elliptic-lanceolate, 15-52 × 2-3.5 cm at middle, often gradually contracted below middle of lamina, 1-2 cm wide at base, acuminate; rachis stramineous, without proliferous bulbils. Pinnae 30-70 pairs, alternate or nearly opposite, remote, upper pairs from middle of lamina upward attached at right angles with rachis, lower pairs ± reflexed, falcate or falcate-lanceolate, basal pairs often forming nearly right angles with each other, up to 1.8 cm × ca. 5 mm at middle, apices shortly spinulose, bases obviously asymmetrical, acroscopic base auriculate; auricles deltoid, apices acute and spinulose, margins of auricles with sparse shallow teeth, proximal margins of auricles nearly parallel to rachis; basiscopic base cuneate, margins of pinnae toothed, teeth often spinulose or sometimes obtuse at apex; abaxially sparsely scaly, microscales brown, filiform, up to 3 mm; frond texture papery; venation slightly distinct abaxially, indistinct adaxially, pinnate; lateral veins often dichotomous but pinnate on auricles, apex of veinlets thickened, nearly reaching pinna margin. Sori terminal on shorter veinlets, in 1 row on each side of midrib, medial, exindusiate.
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