Rhizome ascending, apex densely covered with scales; scales dark brown, linear-lanceolate, 1.5-2 cm, hairlike at apex. Fronds caespitose. Stipes stramineous, 20-50 cm, 4-5 mm in diam., base densely clothed with dark brown or blackish, narrowly lanceolate scales; upward scales becoming brown, smaller and markedly narrow or hairlike. Lamina pentagonal-ovate, tripinnate or bipinnate; basal pinnules pinnatipartite, 30-40 × 20-25 cm, deeply cordate, caudate at apex. Pinnae 10-12 pairs, broadly lanceolate; lowest pinna largest, 15-20 × 10-15 cm, with stalks 0.5-1 cm, acuminate. Pinnules 6-10 pairs, lanceolate, basiscopic pinnules usually larger than acroscopic; lowest basiscopic pinnule on lowest pinna largest, up to 15 × 3 cm, pinnatisect on large fronds and pinnatifid on small fronds and farther up. Ultimate pinnules or segments on lowest pinnule lanceolate, pinnatifid or serrate, acute. Veins pinnate; veinlets simple or forked, visible abaxially. Lamina subleathery, green; rachis and pinna rachis covered with brown or nearly black hairlike scales; pinnule rachis and costa covered with brown, bullate scales abaxially. Sori nearer margin than costa; indusia brown, reniform, entire, rarely fimbriate.
Home