Caudex short, erect; fronds dimorphous. Sterile frond: stipe to 35 cm long, light castaneous, glabrous above base; lamina to 24 cm long, consisting of terminal lamina and 1 or 2 pairs of pinnae; terminal lamina to 19 × 3.5 cm, entire, apex caudate-acuminate, base slightly decurrent; upper pinnae sessile, to 12 × 2.8 cm, narrowed at their bases; basal pinnae short-stalked, with or without a basiscopic lobe; main veins in apical lamina to 10 mm apart along midrib, cross-veins almost straight, 2 or 3 series of areoles between them; sparse short hairs present on lower surface of midrib and veins, upper surface glabrous apart from very short hairs near bases of pinna-midribs. Fertile frond: stipe a little longer than on sterile fronds; apical lamina to 16 × 1.9 cm with short lateral lobes at its base; upper pinnae to 12 × 1.5 cm, their bases decurrent; basal pinnae to 13.5 cm long, to 1.8 cm wide above their basal lobes the largest of which are 5.5 × 0.7 cm (on some specimens the pinnae are narrower); venation much simplified as compared with sterile fronds; sori irregularly scattered, some of them confluent along veins especially near to and parallel with the margins, and in narrower pinnae; indusia distinct except on some confluent sori.
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