Rhizome much branched, hollow, 1.5-2.5 cm thick, forming flat crusts up to 30 cm across, with irregular, much-branched glandular hairs at the apices, otherwise glabrous. Phyllopods hollow, prominent, 1-1.5 cm high, sometimes replaced by solid spines. Fronds monomorphic, stalked, pinnatifid to 4-5 mm from the rachis; stipe 5-10 cm long, with branched glandular hairs below; lamina 12-45 by 2.5-9 cm, decurrent on the stipe, bright green, chartaceous. Pinnae closely set, often overlapping, 0.7-1.6 cm wide, mostly tapering from near base, apex rounded to acute. Venation with recurrent free veinlets. Sori elliptic, 1.5-2 mm diam., immersed in laterally flattened, boat-shaped marginal involucres, 5-15 on each pinna. Sporangia c. 0.3 mm long, on stalks c. 0.75 mm long, spores 64, to 65 µm long.
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