Plants 0.5-10 cm. Stems branched. Distal stipe leaves ovate-acuminate, 0.6-2.5 × 0.4-1.1 mm; base often auriculate, weakly to strongly rounded, not decurrent; apex narrowly acuminate; costa short-excurrent in distal leaves; alar cells indistinct or (especially in auriculate plants) in 1 or 2 rows of few cells, irregular-quadrate, not reaching margin; medial laminal cells 18-64 × 2-3 µm. Branch leaves weakly seriate, strongly concave, 0.9-1.7 × 0.3-0.6 mm; apex long, narrow; medial laminal cells 18-62 × 2-3 µm, weakly to strongly prorate. Seta 0.5-1.2 cm. Capsule 1.5-2.5 × 1 mm. Spores spheric or ovoid, 23-37 × 18-35 µm.