Plants ca. 80 cm tall. Stipe straw-colored, 28-32 cm × 3-4 mm; lamina brownish green, ovate-oblong, ca. 45 × 18-20 cm, 2-pinnate, herbaceous when dry, both surfaces glabrous. Lateral pinnae ca. 7 pairs, basal pair larger, ovate-deltoid, ca. 16 × 8-10 cm, with stalks ca. 1 cm, trifoliolate; lateral pinnules ovate, ca. 8 × 3-3.5 cm, sessile, base rounded-cuneate, apex shortly caudate; terminal pinnule much larger than lateral pinnules, base bifid, with stalk ca. 1 cm. Pinnae of second pair bifurcate. Distal pinnae simple, elliptic or ovate-oblong, 10-12 × 3.5-4 cm, shortly stalked or sessile, base rounded-cuneate, apex caudate. Terminal pinna larger than adjacent pinnae, 5-5.5 cm wide, base unequal; pinna and pinnule margins serrate; teeth rough, deltoid, ascending. Hydathodes clavate, somewhat extending into teeth. Sori extending to 1/2-2/3 of veins.
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