Plants small to large, in tufts, mats, or sods, light to dark green or yellowish, sometimes reddish or glaucous, reddish brown proximally. Stems 1-16(-20) cm, erect, simple, irregularly branched, or with a subfloral whorl of innovations, tomentose proximally. Leaves (with distalmost rarely spiraled around stem), stiffly erect to erect or erect-spreading, less commonly catenulate, erect to erect-spreading when dry, erect to spreading or occasionally secund when moist, lanceolate to broadly ovate-lanceolate or ovate-subulate, 0.6-3 mm; margins revolute, serrulate throughout, teeth paired, appearing 2-fid due to their apposing position from contiguous cells, sometimes margins plane, teeth unpaired; apex gradually to abruptly acute to acuminate, sometimes obtuse; costa short-to long-excurrent (often subpercurrent in obtuse leaves), <320 µm wide at base>, distal abaxial surface smooth or weakly prorulose; laminal cells prorulose at proximal ends on abaxial side and at proximal and distal ends on adaxial side; basal cells rectangular to oblong-hexagonal, 15-30 × 5-8 µm; ; distal cells linear to oblong-linear, 15-40 × 3-5 µm. Specialized asexual reproduction absent. Sexual condition dioicous; perigonia discoid. Seta 2-5(-7) cm, straight. Capsule 1-3.5 mm. Spores ovoid to reniform, 18-30 µm.
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