Plants 40-60 cm tall. Rhizome erect, densely covered with lanceolate blackish brown scales. Stipe stramineous, 20-30 cm, 3-4 mm in diam. at base, lower portion densely scaly; scales brown or dark brown, ovate or lanceolate, dentate. Lamina oblong to oblong-lanceolate, 32-60 cm, base not contracted, 1-imparipinnate, apex obtuse; rachis with sparse lanceolate or linear brown scales. Lateral pinnae 4-9 pairs, alternate, slightly ascendant, shortly stalked, elliptic or oblong-lanceolate; middle pinnae 12-15 × 3-3.5 cm, base cuneate to broadly cuneate, margins entire or acroscopic margins serrulate, apex acuminate; terminal pinna obovate or rhombic-ovate, forked or trifurcate, 10-13 × 6-10 cm; papery, glabrous on both surfaces; venation pinnate, indistinct or slightly raised on both surfaces, veinlets anastomosing to form 7 or 8 rows of areoles. Sori throughout abaxial surface of pinnae; indusia margins denticulate.
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