Rhizome terete, 4-6 mm thick, brown; phyllopods 1-2 cm distant. Anatomy: vascular strands 6-13, with dark bundle sheaths, sclerenchyma strands many (> 100). Rhizome scales inserted evenly, persistent, densely set, spreading, pseudopeltate, monomorphic, deltoid, 2.6-3.9 by 0.8-1 mm, index 3.2-3.9, basal auricles pointed, margin at the base set with frequent glands, dentate, apex acuminate, cell walls clathrate, slightly more strongly thickened in the central part of the acumen, superficial hairs absent. Fronds pinnate, stipe 4-9.5 mm thick, 0.7-0.9 as long as the lamina, glabrous; lamina 50-15 by 23-50 cm, index 2.2-3, widest at the base; pinnae articulate, sessile, 14-24 by 1.1-1.3 cm, index 12.7-18.5, base cuneate, rarely truncate, margin serrate, apex acuminate, basal pair 3-4 cm distant from next pair and equally long, not deflexed, apical segment conform, half as long as longest pinnae. Venation: areoles 1-or 2-serial, marginal veinlets 1-3 per areole, well-developed, simple or rare-ly forked, frequently anastomosing. Indument: 2-or 3-celled glandular hairs present, acicular hairs sparsely present near the margins, 2-4 cells long, scales persistent. Sori uniserial, costal, superficial, 1.5-3 mm diam., receptacular scaly paraphyses persistent, clathrate, 100-200 by 100-130 µm, 2 cells wide. Sporangia glabrous. Spores yel-low, cristate, with short polar excrescences.
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