Plants terrestrial, forming diffuse mats. Stems long-creeping, usually ascending, sparsely branched, branches mostly simple or 1-forked, flat, not articulate, glabrous. Rhizophores axillary, 0.1--0.2 mm diam. Leaves delicate, papery. Lateral leaves well spaced, green, ovate to ovate-lanceolate, 1.6--2.65 X 0.98--1.64 mm; base slightly cordate; margins transparent, serrate; apex acute to slightly obtuse, conspicuously ending in teeth. Median leaves spaced, ovate-lanceolate to narrowly ovate-lanceolate (on basal stems), 1.3--2 X 0.4--0.8 mm; base oblique on inner side, rounded and prominent on outer side; margins transparent, serrate; apex long-acuminate to bristled. Strobili solitary or paired, lax, flattened, 0.4--0.7(--1.5) cm; sporophylls very strongly keeled, keel dentate, base slightly cordate to rounded, margins transparent, sparsely serrate, apex acuminate; megasporophylls larger and wider than microsporophylls, usually on underside of strobili.
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