Plants to 23 mm, dull brown to red-brown. Leaves erect-spreading to subsecund, narrowly lanceolate, gradually acuminate, acute, ± keeled above; margins plane, sinuate-dentate distal to the shoulders, serrulate at apex; costa subpercurrent or, in perichaetial leaves, shortly excurrent; distal cells long-rectangular, 5-10:1, usually slightly inflated in a marginal row. Seta to 7 mm, red-brown. Capsule 0.3-0.8 mm, erect and symmetric or nearly so, smooth (or rarely ± furrowed when old and empty); annulus none; operculum 0.3-0.5 mm, conic, short-rostrate; peristome teeth ca. 300 µm, divided 1/2 length distally. Spores 10-18 µm, nearly smooth.
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