Habit, rhizome morphology. Plants forming tufts of 4-8 fronds. Runners densely branching at ± right angles, forming ‘bushes’ around the base of the plants, 1-3 mm thick (distinctly tapering to thinner ends). Scales on runners dense (especially at the base), spreading to squarrose. Tubers absent. Fronds 150 cm long or more to 15 cm wide, stipe 15-18 cm long. Lamina base strongly reduced, tapering over 50 cm or more, basal pinnae 0.6-1 cm long, 3-3.5 cm distant, middle pinnae straight or slightly falcate. Sterile pinnae 6-8 by 1.5-1.9 cm, base slightly to strongly unequal, basiscopic base truncate, rounded or cordate, acroscopic base truncate, not auricled, margin in basal part entire, apex acute. Fertile pinnae 6-7 by 0.8-1.1 cm, different from sterile pinnae somewhat auricled as acroscopic base. Indument. Basal scales basifix or pseudopeltate, squarrose to reflexed, often inserted on a short spine, 3.5 by 0.5 mm, central part light brown, dull, hyaline margin absent, marginal glands present around the scale, margin in basal part ciliate, acumen dentate (teeth often unicellular), apex uniseriate, often somewhat zigzag. Rhachis scales dense, often caducous, with a well-developed protracted acumen, spreading, hyaline or light brown, acumen ciliate, without a distinct central lamina, forming a floccose cover. Scales on lamina usually persistent, forming a tomentum similar to that on rhachis. Hairs on lamina absent, costa absent. Sori marginal, linear (sometimes interrupted), not impressed. Indusium linear, attached at broad base.
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Stolons and basal portions of stipes densely covered with lanceolate rusty brown scales; scales sometimes with marginal cilia. Fronds to 1.7 m long, when young with a woolly indumentum of pale scales; each scale consisting of a small rounded base with 1 longer and several shorter hair-like processes. Pinnae coriaceous with prominent white hydathodes in a marginal row, sometimes with a blunt basal auricle; margins entire or slightly undulate. Sterile pinnae 10-60 mm long, 10-14 mm wide; apex rounded. Fertile pinnae to 80 mm long; apex acute. Sori marginal, linear, continuous or interrupted; indusium attached along the inner side.
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