Rhizome with main stems creeping, scrambling or pendent, 2-3 mm thick, sparsely rooting, mostly terete when dry; all parts in cross-section with a peripheral sclerified sheath and scattered sclerified strands, white waxy in the older parts, fronds scattered on creeping parts, fronds more closely together but not densely clustered on aerial parts. Scales covering the rhizome, peltate, 3-4 by 0.5-1 mm, somewhat squarrose, with dark centre and lighter margin and acumen, margin ciliate especially when young. Fronds strongly dimorphic, phyllopodia short, usually less than 5 mm high, stipe 0.5-2.5 cm, without dark coloration, especially upwards with up to 2 mm long hairs; fertile lamina 27-56 by 0.5-1(-1.7) cm, base and apex narrow, sterile 17-30 by 2.2-5.7 cm, base mostly cuneate, apex distinctly 2-3.5 cm caudate; texture chartaceous, costa and lamina on lower surface glabrous or with up to 2 mm long hairs, costa without dark coloration, like the stipe with up to 2 mm long brown scales. Sori in a single row on both sides of the costa, indusium firm, 1-3 mm wide, glabrous. Sporangial stalk with glands below the sporangium. Spores with coarse confluent ridges, areolae with short pointed excrescences, perispore hollow, with internal baculae, outer layer not or hardly perforated.
Commonly epiphytic, on trunks or in crowns, less often terrestrial or on rocks, erect, scrambling or pendent, in various types of forest, most frequently in montane or mossy forest, on ridges, up to c. 2000 m altitude.
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