Stems axillary hairs 2 per leaf axil, with 2 short, brown basal cells and 3 elongate, hyaline distal cells. Leaves 1-3 mm, acute, bases ovate; margins plane, serrate to serrulate in subulate part; costa percurrent, filling distal parts of the subula, strongly prorulose distally on abaxial surface; median cells rectangular, 17-39 × 3-5 µm, becoming larger at base. Specialized asexual reproduction sometimes present as yellowish brown, smooth, round or irregularly shaped tubers borne on rhizoids, 65-100 µm in longest dimension; perigonia and perichaetia terminal. Seta orange to red, erect, straight, 0.3-2.7 cm, twisted when dry. Capsule slightly arcuate or sometimes straight (0.5-)1-2(-2.5) × 0.2-0.5 mm; operculum 0.3-0.6 mm.
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