Fronds caespitose; fertile fronds (40-)65-110 cm; stipe stramineous, (18-)28-50 cm, ca. 2.5 mm in diam., base sparsely scaly; scales dark brown and narrowly lanceolate, upward glabrate; lamina 2-pinnate, deltoid-oblong, (25-)35-60 × (9-)18-30 cm, base broadly cuneate, apex acuminate; pinnae 10-18 pairs, basal pinnae opposite, upper pinnae alternate, obliquely spreading, shortly stalked or sessile, several basal pinnae equal in size, broadly lanceolate, (5-)11-14 × 2-3(-4) cm, base not narrowed, rounded-truncate, equilateral, with very short stalk ca. 1 mm, pinnate, apex long acuminate; pinnules ca. 15 pairs, lower pinnules subopposite, upper pinnules alternate, subspreading, basal pinnules oblong-lanceolate, somewhat falcate, separated from each other, 2-2.2 cm × ca. 5 mm, base subequilateral, slightly auriculate on acroscopic side, adnate to costae on basiscopic side, but not decurrent, pinnatilobate to 1/3, apex subobtuse or obtuse-acute and serrate; small pinnule segments rounded and with 1 or 2 teeth at apex; upper pinnae gradually shortened, lanceolate, somewhat falcate, separate from each other; veins visible abaxially, 2-or 3-forked in segments. Lamina papery when dried, pale green, glabrate; rachis and costae stramineous abaxially, with subulate spines on adaxial side at base of costa or costule. Sori oblong or shortly linear, 7-10 pairs per pinnule, biseriate on both sides of costules; indusia dark brown, oblong or shortly linear, membranous, entire, persistent. Perispore surface without folds.
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