Plants 4-11(-20) cm. Stems with branches common, attenuate; paraphyllia many. Stem leaves (central) oblong to oblong-ligulate, undulate, 3-6 × (1-)2.2-2.5 mm; margins slightly serrate to serrulate distally; apex obtuse to broadly acute; costa single, 3/4 leaf length; alar cells quadrate; basal laminal cells quadrate to short-rectangular, 30-54 × 5-6 µm; distal medial cells linear, 27-36 × 3-5 µm; apical cells rhomboidal, (8-)12-18 × 5-6 µm. Sexual condition dioicous. Seta 0.2-0.3 cm. Capsule immersed.