Plants 3-10 cm tall. Rhizomes to 1.5 mm in diam., sparsely to densely scaly; scales brown, subulate-lanceolate, margin denticulate. Fronds remote, ± dimorphic; stipe straw-colored, 0.5-3 cm, smooth; sterile fronds not very different from fertile fronds, stipe 0.2-1.5 cm, lamina oblong or narrowly to broadly lanceolate, 3.5-10 × 0.5-2.5 cm, when dried subleathery, brown or grayish green, glabrous or abaxially sparsely scaly, base cuneate and decurrent, margin entire, slightly revolute when dried, apex rounded to bluntly acuminate. Fertile fronds: stipe 1.2-4 cm; lamina mostly similar to that of sterile frond but longer and narrower, sometimes narrowly oblong, 5-16 × 0.3-2.8 cm, apex obtuse or shortly acute; costa raised on both sides, veinlets not obvious. Sporangia in discrete sori in 1 line on each side of midrib, sori mostly orbicular, occasionally elliptic and up to 3-4 mm, sometimes some confluent when mature.
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