Habit, rhizome morphology. Plants forming tufts of 2 or 3 fronds. Runners 0.5-1 mm thick (or thinner), branching angle divaricate. Scales on runners very sparse or sparse, spreading. Tubers present. Fronds 50-90 cm long (or longer), 5-7 cm wide, stipe 6.5-15 cm long. Lamina base strongly reduced, tapering over 8-15 cm, basal pinnae 0.6 cm long, 2-4 cm distant, middle pinnae straight to distinctly falcate. Sterile pinnae 2.9-3.2 by 0.6-0.8 cm, herbaceous, thin, base slightly unequal, strongly unequal or fully 1-sided, basiscopic base cuneate or cordate, acroscopic base cordate, auricled (often dilated and crossing the rhachis), margin in basal part crenate or dentate, towards apex dentate or deeply dentate, apex acute. Fertile pinnae 2.1-3.5 by 0.5-0.7 cm, the base often more distinctly 1-sided and the margin more deeply dentate than the sterile pinnae. Indument. Basal scales peltate, spreading, 3.5 by 0.5 mm, straw-coloured or hyaline, dull, margin in basal part irregularly lacerate with a few protrusions, in acumen entire, marginal glands absent. Rhachis scales very sparse (persistent only around the pinna-bases), with a well-developed spreading, ciliate acumen, or completely dissected into narrow filaments, with hyaline or dark glandular apical cells. Scales on lamina absent. Hairs on lamina frequently present (very inconspicuous), on costa absent. Sori submarginal or medial, 6-10 pairs on fully fertile pinnae, elongated, slightly impressed. Indusium lunulate or broad, attached at broad base.
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A fern. It is a herb that keeps growing from year to year. It can grow attached to oil palm.
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