Plants in dense tufts, light to dark green, dark brown or sometimes nearly black, dull. Stems 2-8 cm, densely tomentose with brown to orange rhizoids nearly to stem apex. Leaves falcate-secund to erect-spreading, often at wide angles from stems, strongly crisped when dry, often with a few undulations in the distal half, (3-)5.5-6.5(-8.5) × 0.4-0.8 mm, concave below, keeled above, lanceolate, acute; margins entire below, serrulate above, incurved in the middle of the leaf; laminae 1-stratose or with 2-stratose regions in distal half of leaf, especially on margins, sometimes with entire laminae 2-stratose, rarely margins 3-stratose; costa percurrent or shortly excurrent, 1/6-1/4 the width of the leaves at base, very prominent and rounded on abaxial surface, smooth or slightly rough above on abaxial surface, abaxial ridges absent, shaped like a pair of tongs, with one row of guide cells, 2 well-developed and thick stereid bands extending to the apex, adaxial epidermal layer of cells not differentiated, the abaxial layer differentiated; cell walls between lamina cells strongly bulging; leaf cells smooth to papillose above on abaxial surface; alar cells 2-stratose, differentiated, sometimes extending to costa; proximal laminal cells elongate-rectangular, pitted or not pitted, (15-)31-46(-75) × (5-)7-9(-12) µm; distal laminal cells short, irregularly quadrate-rectangular, not pitted, (5-)7-14(-37) × (4-)8-9(-13) µm. Sexual condition pseudomonoicous; dwarf males on stem rhizoids of female plants; interior perichaetial leaves abruptly short-acuminate, convolute-sheathing. Seta 1.3-3.5 cm, solitary, yellowish to brown. Capsule 2-4 mm, long-cylindric, arcuate, inclined to horizontal, not or slightly strumose, striate to furrowed when dry, yellowish brown to dark brown; operculum 1-2.5 mm. Spores 14-30 µm.
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