Plants small, green or yellow-green, often with reddish tinge. Stems 0.5-1(-2) cm; rhizoids brown or red-brown. Leaves loosely set, broadly lanceolate, ovate-lanceolate, or narrowly ovate, weakly concave, 0.4-1.5(-2) mm; base not decurrent; margins plane to revolute proximally, serrulate distally, limbidium absent; apex acute to acuminate; costa short-excurrent, awn slender, ; alar cells similar to adjacent juxtacostal cells; proximal laminal cells abruptly short-rectangular, 2-3:1; medial and distal cells 40-60 × 10-12(-14) µm, 3-5:1. Specialized asexual reproduction by rhizoidal tubers, on long rhizoids in soil or occasionally at stem base, bright red, spheric, 150-300µm, cells 25-50 µm, smooth. Sexual condition dioicous. Capsule inclined or nutant, 2-3 mm.
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