Rhizome creeping, ca. 4 mm in diam., densely scaly; scales dark brown, ovate-lanceolate, ca. 3 × 1 mm, margin subentire, apex long acuminate. Sterile fronds pinnate, stramineous, 30-35 cm, sparsely scaly; rachis usually with a narrow wing; pinnae 11-13 pairs, sessile, oblong-lanceolate, ca. 5 × 1-1.2 cm, abaxially sparsely scaly, adaxially glabrous, base asymmetrical, usually oblique and broadly cuneate, margin ± entire, apex acute; superior pair of pinnae connate, terminal part with a bulbil; veins reticulate and forming a costal areole. Fertile fronds not seen.
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