Plants small to medium-sized, often distinctly rosulate, light to dark green, brown proximally with age. Stems 1-4 cm. Leaves 2.5-8.5 × 1-2 mm, lingulate to lanceolate, ovate-lanceolate near base of stem, plane to somewhat keeled and concave, often with oblique rows of teeth on undulations on abaxial surface, the teeth often with bases united, the apex acute or sometimes obtuse, the leaf margins irregularly toothed, the teeth crowded, double or sometimes single, rarely triple-toothed; costa percurrent or ending a few cells below the apex, smooth or with teeth on abaxial surface near apex, seldom extending below leaf middle; lamellae 2-6, laxly spreading, 8-12(-14) cells high, or at times lower and inconspicuous, 2-5 cells high; median lamina cells 27-40(-48) µm wide, hexagonal, occasionally irregularly angled or rounded, rather thin-walled to firm, collenchymatous with small trigones. Sexual condition dioicous; male plants as large or larger than females, perigonial bracts small, ovate or suborbicular, often more than one bud per plant. Seta 1-3(-8) per perichaetium, to 5 cm, erect to slightly flexuose. Capsule 2-7.5 × 0.5-1 mm, cylindric, usually somewhat curved and inclined, sometimes straight and erect; operculum 2-3 mm. Spores 10-19 µm.
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