Plants in loose tufts, light green, glossy. Stems 4-15 cm, densely tomentose with whitish or red-dish rhizoids. Leaves erect to spreading, ± flexuose, little changed when dry, strongly undulate, (5.5-)7-9.5(-10.5) × 1-2 mm, lanceolate, concave proximally, keeled above, acute; margins strongly toothed in the distal half; laminae 1-stratose; costa ending before apex, occupying ca. 1/16-1/8 of leaf base, strong, with two toothed ridges distally on abaxial surface, with one row of guide cells, two stereid bands, adaxial epidermal layer of cells not differentiated, abaxial layer with a few cells enlarged; cell walls between lamina cells not bulging; leaf cells smooth; alar cells 2-stratose, well-differentiated, not extending to costa; proximal laminal cells elongate, pitted, (45-)78-129(-156) × (5-)9-10(-14) µm; distal laminal cells shorter, sinuose, pitted, (42-)64-68(-115) × (4-)9-10(-13)µm. Sexual condition pseudomonoicous; dwarf male plants on stem rhizoids of female plants; interior perichaetial leaves abruptly long-acuminate, convolute-sheathing. Seta 1.5-4 cm, usually aggregate, 3-6 per perichaetium, brown or reddish brown. Capsule 2-3.5 mm, arcuate, inclined to horizontal, furrowed when dry, yellowish brown or reddish brown; operculum 2-4 mm. Spores 12-24 µm.
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