Plants small, occasionally minute, light green or yellow. Stems irregularly branched, ± in one plane; hyalodermis absent, central strand present; paraphyllia absent; rhizoids or rhizoid initials on stem and abaxial costa or on lamina near leaf apex, often forming tomentum, strongly branched, warty-papillose; axillary hair distal cells 1-4, hyaline. Stem leaves erect to spreading, straight or slightly falcate, lanceolate or ovate-lanceolate, not plicate, 0.6-1.2 mm; base decurrent; margins plane or partly slightly incurved or recurved, finely denticulate, or often coarsely so near base, limbidia absent; apex acuminate, ; costa single, ending in acumen, sometimes percurrent; alar cells differentiated, usually rectangular or sometimes quadrate, not inflated, region distinct but gradually delimited, transversely triangular; medial laminal cells linear or short-linear; marginal cells 1-stratose. Sexual condition autoicous. Capsule inclined, cylindric, slightly curved; peristome slightly reduced; exostome margins indistinctly dentate distally; endostome cilia usually 1 or 2. Spores 14-19 µm.
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