Stipe brownish purple, ca. 70 cm × 5 mm; lamina dull green when dry, ovate-oblong, somewhat longer than stipe, ca. 30 cm wide, 2-pinnate, herbaceous, both surfaces glabrous; rachis brownish purple abaxially, brown adaxially. Lateral pinnae ca. 8 pairs, basal pair largest, ovate-deltoid, ca. 35 × 15 cm, stalks ca. 3 cm, pinnate; lateral pinnules 3 pairs, well separated, lanceolate, ca. 15 × 2 cm, base broadly cuneate, apex long acuminate; terminal pinnule much longer than lateral ones, as medial pinnae in shape and size. Pinnae of second pair trifoliolate. Medial pinnae simple, linear-lanceolate, ca. 25 × 3 cm, stalks ca. 1 cm, base broadly cuneate, apex long acuminate; distal pinnae gradually shortened. Terminal pinna larger than adjacent ones. Pinna and pinnule margins serrate, teeth shallow, incised. Veins 1-or 2-forked, occasionally connected forming 1 or 2 areoles; hydathodes extending to tooth base. Sori extending close to lamina margin.
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A fern. It grows 1.5 m tall.