Plants epilithic, evergreen, prostrate. Rhizophores at intervals throughout length of main stem, borne on ventral side in axils of branches. Main stems branched throughout, stramineous, terete, sulcate; primary leafy branches more than 3 pairs, forked, branchlets sparse, adjacent primary branches on main stem 0.7-1.2 cm apart; leafy portion of main stem including leaves 2-3.4 mm wide at middle, ultimate branches 1.6-2.4 mm wide including leaves. Axillary leaves on branches symmetrical, ovate-lanceolate, 1-2 × 0.6-1 mm, base exauriculate, margin long ciliolate. Dorsal leaves ± symmetrical, those on main stems not obviously larger than those on branches; dorsal leaves on branches not approximate, ovate, broadly ovate, or suborbicular, 0.8-2 × 0.4-0.8 mm, not carinate, base obtuse, margin long ciliolate, apex aristate or cuspidate. Ventral leaves asymmetrical, those on main stem not obviously larger than those on branches; ventral leaves on branches spreading or slightly deflexed, ovate or elliptic, 1.6-2 × 0.8-1.2 mm, apex acute or apiculate; basiscopic base rounded, margin sparsely ciliolate; acroscopic base enlarged, broader, overlapping stem and branches, margin shortly ciliolate, cilia 0.3-0.5 mm. Strobili solitary or in pairs, terminal, compact, dorsiventrally complanate, 6-25 × 2-2.5 mm; sporophylls dimorphic, resupinate, white-margined; dorsal sporophylls oblong-lanceolate, carinate, margin ciliolate, apex acuminate, with sporophyll-pteryx incomplete and ciliolate; ventral sporophylls oblong-ovate, carinate, margin long ciliolate; microsporangia elliptic; microspores orange-red, megaspores gray.
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