Stipe to 24 cm long, very dark, glabrous apart from hairs in groove; scales 3-4 x 1 mm. Lamina to 25 cm long; pinnae 12 pairs, well spaced; lower pinnae stalked hardly 1 mm, narrowed to base on basiscopic side, basal acroscopic lobe free (also on all other free pinnae) and dentate. Largest pinnae 5-6x1.4 cm, short-acuminate, where sterile lobed to 1 mm from costa, where fertile more deeply; lobes ± dentate, most strongly where fertile, oblique; costules 3-3.5 mm apart; veins to 6 pairs, prominent and slender on both surfaces; lower surfaces lacking acicular hairs, a few short capitate hairs sometimes on costae, scales with widened base present on costae, uniseriate scales on costules; short acicular hairs on upper surface of rachis and costae. Sori near costules; indusia small, glabrous, sporangia often with a red glandularcell on stalk.
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