Habit, rhizome morphology. Plants terrestrial, forming tufts of 3-5 fronds. Runners tendril-like, proliferous or free, 1 mm thick, branching angle divaricate or straight. Scales on runners very sparse or sparse, appressed, spreading or (some) squarrose. Tubers absent. Fronds 94-102 by 7.5-10 cm, stipe 12-14 cm long. Lamina base strongly reduced, tapering over 20-35 cm, basal pinnae 0.5-1 cm long, 2.5-3 cm distant, middle pinnae straight or slightly falcate. Sterile pinnae 3.5-4 by 0.9-1 cm, herbaceous, thick, base slightly to strongly unequal, basiscopic base rounded, acroscopic base truncate, slightly auricled, margin in basal part crenate, apex rounded or obtuse. Fertile pinnae 4.5-6 by 0.7-0.8 cm, otherwise similar to sterile ones. Indument. Basal scales peltate, appressed, 2 by 0.7 mm, central part dark brown or blackish, shining, margin in basal part hyaline, ciliate, in acumen pale brown (often abruptly distinct from the dark central part), entire or denticulate; strongly elongated, lightly coloured marginal glands present around the scale. Rhachis scales sparse or dense, without a distinctly protracted acumen, appressed (often somewhat bullate when dry), light brown. Scales on lamina sometimes present, very few, appressed, on lower surface. Hairs on lamina absent, on costa constantly present (also on lower surface, usually sparse). Sori submarginal, 20-23 pairs on fully fertile pinnae, round, not impressed. Indusium reniform, with open sinus, attached at sinus.
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