Medium-sized ferns. Rhizome terete, long-creeping with internodes 0.5-6(-12) cm long, 2-6 mm thick, covered with scales. Anatomy: ground tissue parenchymatous, vascular strands 4-14, with or without bundle sheaths, sclerenchyma strands absent or present. Rhizome scales deciduous, appressed to spreading, pseudopeltate, clathrate, dull brown, to 6.5 mm long, apex acute to acuminate, margin entire, cell walls in the basal part sinuose, apically straight, warty. Fronds monomorphic, stipitate, pectinate; lamina equally wide throughout or somewhat wider near the base; 3.6-11.2 as long as wide, herbaceous, midrib raised above, pinnae with an indistinct abscission layer at their base, perpendicular to the rachis, the lowermost rarely slightly reduced or reflexed, gradually reduced towards the apex, pinna margin entire, crenate or serrate, apex obtuse to acute, texture membranaceous, glabrous or with inconspicuous, 2-celled glandular hairs. Venation free, veins simple or once forked, terminating in hydathodes. Sori in a single row between costa and margin, medial, terminal on the acroscopic veins, round, 0.5-1.8 mm, receptacular paraphyses absent. Sporangia stalked, capsule c. 0.3 mm long, with 10-12 indurated annulus cells. Spore light yellow, smooth or pusticulate and shallowly wrinkled, with few or many globules.
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