Rhizome dorsiventrally flattened, 3-4 by 2-3 mm, brown; phyllopods 1.5-4.5 cm distant. Anatomy: vascular strands 9-12, with dark bundle sheaths, sclerenchyma strands few (4-8). Rhizome scales inserted evenly, deciduous, densely set, appressed to squarrosely spreading, pseudopeltate, monomorphic, deltoid, 1.7-4.9 mm, index 1.8-6.1, basal auricles short, rounded or pointed; margin at base sparsely set with glands, irregularly dentate, acumen dentate, apex filiform, not translucent, nearly completely filled with cell walls; cell walls clathrate, thicker towards apex, cells yellowish, superficial hairs absent or in a tuft near the point of attachment. Fronds pinnate, stipe 3-4 mm thick, 0.2-0.3 as long as the lamina, glabrous; lamina 26-50 by 26-35 cm, index 1-1.5, widest at the base; pinnae articulate, sessile to shortly petiolate, 12.5-17.5 by 2.4-3.5 cm, index 5-5.2, base cuneate to angustate, margin crenate to serrate, apex acuminate; basal pair 2.5-4.5 cm distant from next pair and equally long, not deflexed, apical segment conform, equally long as longest pinnae or somewhat shorter. Venation: areoles 2-or 3-serial, marginal veinlets up to 1/3 as long as the areole, simple or forked, frequently anastomosing, forming areoles with or without included veinlets. Indument: 2-celled glandular hairs present, acicular hairs absent, scales deciduous or sometimes persistent. Sori 1-3-serial, superficial, 1.5-2 mm diam., receptacular scaly paraphyses persistent, clathrate, 76-140 by 76-153 µm, 2 or more cells wide. Sporangia glabrous. Spores yellowish, cristate with very long polar excrescences.
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