Stems 4--6 mm diam.; scales blackish, linear-lanceolate. Leaves erect or arching. Petiole black, 1/4--1/3 length of blade, hairs short, mostly simple, multicellular; scales deltate to linear, base broadly hastate-lacerate. Blade narrowly ovate, 20--70 × 5--11 cm; base narrowly truncate; apex acute. Segments narrowly ovate to linear, 3--5 mm wide; segments at base of blade abruptly reduced, usually reflexed. Veins 1--2-forked. Sori round or oval, sporangia with 32 spores. n = 2 n = 111, apogamous.
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