Plants 1-2.5 m tall. Rhizome erect, short, densely clothed with broadly lanceolate, brown or dark brown, entire scales. Fronds caespitose; stipe stramineous, ca. 1/3 as long as lamina, grooved adaxially, base densely clothed with brown or dark brown, lanceolate, entire scales; rachis with narrowly lanceolate, acicular scales; lamina oblong-lanceolate, 55-60 × 36-40 cm, once imparipinnate, apex acuminate; pinnae 6-10 pairs, oblique, 4-6 cm apart, oblong-lanceolate, 16-20(-30) × 2.5-4(-6) cm, shortly stalked, apex shortly acuminate, uppermost few pinnae sessile, decurrent along rachis, margin incised-serrate; terminal pinna similar to lower ones but smaller, stalk 1-1.5 cm. Lamina papery, glabrous on both surfaces; costa impressed into a groove adaxially, raised abaxially; veins pinnate, basal 1 or 2 pairs ± midway to margin, remainder extending closer to margin. Sori irregularly scattered near both sides of costa, abaxial on veinlets, exindusiate.
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