Plants medium-sized to large, in loose tufts, green, sometimes yellowish or brownish. Stems to 10 cm, ascending or more commonly arching, flexuose, terete-to subcomplanate-foliate, irregularly pinnate, branches to 10 mm, often curved, terete-to complanate-foliate. Stem leaves erectopatent to patent, loosely arranged, ovate or ovate-triangular, slightly concave, not plicate, 1.4-2.4 × 0.9-1.5 mm; base with decurrency broad proximally, becoming very narrow; margins plane, serrulate; apex gradually acuminate to narrowly acute; costa to 30-75% leaf length, weak, terminal abaxial spine small or absent; alar cells larger than basal juxtacostal cells, 15-40 × 12-18 µm, walls relatively thin, region abruptly or occasionally gradually delimited, pellucid; laminal cells linear, 60-150 × 7-12µm; basal cells broader, shorter than laminal cells, region in 3 rows. Branch leaves ovate; base asymmetric; margins recurved basally on one side, more strongly serrulate to coarsely serrate distally; apex acute; costa in some leaves with terminal spine prominent, with several abaxial teeth. Sexual condition autoicous. Seta reddish, 1.7-3.2 cm, rough. Capsule horizontal to pendent, reddish, oblong, curved, especially when young (sometimes forming 180-270± arch), 2 mm. Spores 13-17 µm.
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