Plants in dense tufts, light green to yellowish green, glossy. Stems 0.5-3 cm, tomentose below with whitish or reddish brown rhizoids. Leaves straight, erect-spreading, little changed when dry, smooth, 4-6 × 0.2-0.4 mm, most of the leaf tips deciduous and absent, lanceolate, concave proximally, tubulose distally, apex acute; margins entire or serrulate at apex; laminae 1-stratose or with 2-stratose regions near apex; costa long-excurrent, 1/6-1/4 the width of the leaves at base, abaxial ridges absent; leaf cells smooth, with a row of guide cells, no stereid bands, 1 or 2 rows of cells above and below guide cells with slightly thickened walls and large lumens, the adaxial and abaxial epidermal layers of cells not differentiated; cell walls between lamina cells not bulging; alar cells 1-stratose, differentiated, not extending to costa; proximal laminal cells rectangular to linear, with a few pits, (46-)60-105(-120) × (4-)6-16(-22) µm; distal laminal cells quadrate, rounded or short-rectangular, not pitted, (12-)17-25(-32) × (8-)10-11(-12) µm. Sexual condition dioicous; male plants as large as females; interior perichaetial leaves gradually narrowed to a subulate apex, convolute-sheathing. Seta 1.5-2.5 cm, solitary, yellow to light brown. Capsule 1.4-2.5 mm, straight and erect, smooth, often irregularly wrinkled when dry, yellow to light brown; operculum 1-1.8 mm. Spores 10-18 µm.
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