Plants 50-100 cm tall. Rhizome erect, densely covered with lanceolate brown scales. Stipe stramineous, 24-48 cm, 3-5 mm in diam. at base, lower portion densely scaly; scales brown, ovate or lanceolate, dentate. Lamina oblong-lanceolate, 34-70 cm, base slightly contracted, 1-imparipinnate, apex obtuse; rachis with sparse lanceolate or linear brown scales. Lateral pinnae 8-13 pairs, alternate, slightly ascendant, shortly stalked, linear-lanceolate; middle pinnae 9-20 × 1.5-2.5 cm, base cuneate, margins entire or acroscopic margins serrulate, apex acuminate or caudate; terminal pinna obovate or rhombic-ovate, forked or trifurcate, 6-10 × 4-9 cm; papery, glabrous on both surfaces, adaxially with raised dots corresponding to abaxial pits containing sori; venation pinnate, indistinct or slightly raised on both surfaces, veinlets anastomosing to form multiple rows of areoles. Sori throughout abaxial surface of pinnae; indusia margins denticulate or subentire. 2n = 82*.
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