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Plants terrestrial. Rhizome erect, to 200 mm high, to 26 mm in diameter, closely set with roots, crowded stipe bases and scales, scales chartaceus, castaneus, adnate, lanceolate to narrowly ovate, with long filiform outgrowths along the margin, to 20 mm long, to 3 mm wide. Fronds crowded, caespitose, erect, to 2 m long; stipe firm, castaneus, sulcate adaxially, to 645 mm long, to 13 mm in diameter, densely scaled, scales similar to those on the rhizome; lamina anadromous or isodromous, 2-pinnate, oblong-ovate, to 1.4 m long, to 460 mm wide, with up to 32 pinna pairs; rachis stramineous, adaxially sulcate, sulcus not confluent with that of the pinna-rachis, densely scaled, scales chartaceus to thinly chartaceus, castaneus, ferrugineous or stramineous, sessile, filiform, simple or with numerous filiform outgrowths along the margin, apex terminates in an oblong thin-walled cell; pinnae articulated to the rachis, nonfunctional, opposite to alternate, 1-pinnate, basal pinnae slightly more widely spaced than those towards the lamina apex, often slightly overlapping distally, linear-acute, to 320 mm long, to 46 mm wide, with up to 26 pinnule pairs; pinna-rachis stramineous, adaxially sulcate, initially densely scaled, scales similar to those on the rachis, adaxially with several spine-like outgrowths at and near the point of the pinnule attachment; pinnules sessile, articulated to the pinna-rachis, opposite to alternate, firmly herbaceous to subcoriaceus, dimidiate, parallelogram-shaped, to 24 mm long, to 12 mm wide, adaxially with a few scales along the costa, scales chartaceus, stramineous, filiform, simple or with outgrowths along the margin, to 4 mm long, abaxially sparsely scaled, scales thinly chartaceus, stramineous to ferrugineous, sessile, filiform, simple or with long filiform outgrowths along the margin, apex terminates in an oblong thin-walled cell, to 4 mm long, to 0.4 mm wide. Venation anadromous, obscure, pinnately branched, free, vein branches terminate near the margin. Sori elliptic, at the apex of an abbreviated anadromous vein branch, to 3 mm long, to 8 per pinnule; sporangium long-stalked, simple, 3-seriate below the capsule, capsule globose in lateral view, with (13-)15(-16) indurated annulus cells, epistomium (2-)3(-3)-celled, hypostomium (2-)4(-4)-celled; indusium firmly herbaceous, brown, elliptic, entire, centrally attached along an elongated receptacle, to 3 mm long, to 1 mm wide; receptacle nude. Spores 64 per sporangium, brown, ellipsoidal, monolete, perispore with large inflated tubercules, echinulate. Figure 39A & B.