Plants terrestrial, 30-70 cm tall. Rhizome ascending to creeping, short, 1.5-2 cm in diam., roots lignified, densely scaly at apex and stipe bases; scales brown, glossy, linear-lanceolate, up to 1 cm, membranous, margins densely ciliate, apices long acuminate. Fronds clustered, dimorphic; sterile fronds in rosettes in juvenile stage, stipe dark stramineous or brown to castaneous, slightly glossy, 10-25 cm, 3-4 mm in diam. at base, glabrous, grooved above, narrowly winged toward apex. Lamina simple, trifoliate, or odd-pinnate, dark green when dried, ovate, 20-35 × 20-25 cm, thickly papery, both surfaces glabrous, base decurrent or not, apex acuminate; rachises and costae dark stramineous, slightly grooved above, glabrous on both sides; terminal pinna larger, broadly lanceolate, ca. 20 × 5-6 cm, subsessile or with a stalk up to 1 cm, base cuneate and decurrent, apex long acuminate, entire to undulate; lateral pinnae 1-3 pairs, opposite, interval 5-6 cm, slightly oblique, subsessile, lanceolate, 15-20 × 3-4 cm, bases cuneate and decurrent and forming narrow wings, margin entire or slightly undulate, apices long acuminate. Fertile fronds elongate and narrow; stipe up to 40 cm, glabrous; lamina narrow, trifoliate or odd-pinnate, pinnae linear-lanceolate, 8-10 × ca. 2 mm, sessile, entire or undulate. Veins anastomosing forming copious areoles, included veinlets forked, raised on both sides, glabrous. Sori orbicular, anastomosing in line along areoles, throughout abaxial surface when mature, exindusiate.
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