Plants in dense tufts, usually bearing 2–6 dark green, stout, terete branchlets, 1–4 mm, in the axils of the distal leaves, each flagelliform branchlet with short, ovate to lingulate, broadly acute to obtuse, ecostate or shortly and indistinctly costate leaves closely appressed to the axis, yellowish green to dark green, glossy. Stems 0.5–6 cm, densely tomentose with light brown to reddish brown rhizoids. Leaves falcate-secund to nearly straight, crisped to weakly crisped when dry, smooth, (1–)2–4(–5) × 0.3–0.6 mm, concave below, tubulose above, from a lanceolate or ovate-lanceolate base to an acuminate subula, apex acute; margins smooth to serrulate above; laminae 1-stratose; costa percurrent or sometimes ending just before apex, 1/6–1/4 the width of the leaves at base, smooth to ± rough with papillae or small teeth on abaxial surface near apex of leaf, abaxial ridges absent, with a row of guide cells, two stereid bands above and below not extending above the leaf middle, adaxial epidermal layer of cells not differentiated, the abaxial layer with some cells differentiated; cell walls between lamina cells not bulging; leaf cells smooth or weakly abaxially prorate above; alar cells 1-stratose, distinctly differentiated, not extending to costa; proximal laminal cells elongate-rectangular, not pitted or with few pits, (12–)24–38(–70) × (4–)10–15(–18) µm; distal laminal cells short-rectangular to quadrate, not pitted, (5–)12–14(–23) × (5–)7–12(–14) µm. Sexual condition dioicous; male plants as large as females; interior perichaetial leaves abruptly long-acuminate, convolute-sheathing. Seta 1–2.5 cm, solitary, yellowish to brown. Capsule 1.5–3 mm, straight and erect or nearly so, striate when dry, yellowish brown to brown; operculum 0.5–l.6 mm. Spores 12–19 µm.
