Plants green above, light-brown below. Stems up to about 30 mm high; central strand well developed but often hollow. Leaves up to 2.5 mm long, oblong-lanceolate, acute, sometimes broadly so; margins broadly incurved to involute; costa with ventral epidermal cells quadrate and papillose and dorsal epidermal cells elongate and smooth; upper cells in longitudinal rows, 7-9 µm, evenly thick-walled, bulging on the upper surface and usually only slightly convex on the lower, with 4-6 bifid papillae on both surfaces; basal cells differentiated across the leaf, 13-18 µm wide and 2-4:1, thin-walled. Autoicous or occasionally polygamous. Setae 4.5-6 mm long, yellow-brown, twisted clockwise; capsules 0.7-1 mm long, ovoid, yellow-brown; exothecial cells 3-4-layered, short-rectangular, 25-35 µm wide and 2-3:1, thin-walled; annulus of 3-4 rows of cells; operculum 0.4-0.7 mm long, conic to rostrate; peristome none or consisting of small, papillose plates, usually hidden below the mouth of the capsule. Spores (13-)18-25(-28) µm, brown, papillose.