Stems ascending to erect; scales dark brown, ovate to lanceolate, margins dentate. Petiole 15--45 cm. Blade deltate-lanceolate, pinnate-pinnatifid, 20--36 × 8--22 cm, broadest at or just above base, acuminate at apex. Pinnae lanceolate-oblong, inequilateral, base cuneate basiscopically, truncate acroscopically, apex acuminate, lobed halfway or more toward costa; basal acroscopic segments of basal pinnae free, margins serrate. Veins pinnate, lateral veins simple or sometimes forked. Sori elongate, straight, single or double, indusiate; indusia vaulted, thin, erose.
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