Plants small to medium-sized, bright green to yellow-green, rarely with reddish tinge. Stems 0.4-1(-2) cm; rhizoids brown to red-brown. Leaves densely imbricate, broadly lanceolate to narrowly ovate, flat to weakly concave, 0.4-1.5(-2) mm; base rarely weakly decurrent; margins plane to weakly revolute basally, entire to serrulate distally, limbidium absent or present, of 1 or 2 rows of elongate incrassate cells; apex acute; costa percurrent to short-excurrent, awn slender; alar cells rectangular, region not differentiated; proximal laminal cells gradually rectangular, 2-4:1; medial and distal cells 60-80 × 8-14(-16) µm, 4-6:1. Specialized asexual reproduction by rhizoidal tubers, on long rhizoids in soil and sometimes in proximal leaf axils, brown, pyriform, 40-80 µm, cells 15-20 µm, smooth to weakly protuberant. Sexual condition dioicous or rarely synoicous. Capsule suberect, inclined, or nutant, 2-3(-5) mm; peristome occasionally somewhat reduced; endostome cilia sometimes short or poorly developed.
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