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Plants epilithic or epiphytic. Rhizome short-decumbent, to 2 mm in diameter, set with roots, short, closely spaced persistent stipe bases and scales, scales chartaceus, ferrugineus to castaneus, sessile, subulate, cuneate to cordate, dentate, to 8 mm long, to 1 mm wide. Fronds crowded, pendent, to 720 mm long; stipe poorly differentiated, to 4 mm long, initially sparsely set with scales similar to, but smaller than, those on rhizome; lamina carnose-coriaceus, simple, linear, entire, to 716 mm long, to 3 mm wide, glabrous adaxially and abaxially. Venation obscure. Sori along a near-marginal vascular commissure, sunken in two submarginal grooves extending the entire length of the lamina; receptacle paraphysate, paraphyses branched, branch apices terminate in a clavate, indurated cell; sporangium long-stalked, simple, capsule globose in lateral view, with (14-)14(-16) indurated annulus cells, epistomium (3-)4(-5)-celled, hypostomium (3-)4(-5)-celled, stomium with 4 narrow cells of which walls are conspicuously thickened. Spores brown, ellipsoidal, monolete, smooth, (52-)58.37(-70) x (30-)34.75(-38) (m. Figure 24A-E.