Plants of medium size, forming cushions, yellow-green to light green; terricolous or saxicolous. Stems 2-15 mm high, branching mainly above, with reddish tomentum below; in section round, central strand small, cells collapsed, inner cortical cells in 3-4 rows, thin-walled, outer cortical cells in 2-3 rows, incrassate, reddish. Leaves crowded, tips weakly contorted dry, erect-spreading wet; linear-lanceolate to ovate-subulate, 2.5-6.0 mm long, broadly channelled ventrally; margins broadly incurved, entire to serrulate. Costa 1/2-1/3 of width of leaf base, percurrent or excurrent as short, denticulate tip; in proximal section guide cells c. 18, ventral cells large, completely covering guide cells, dorsal stereids in groups of 4 to 15 cells, stereid groups separated by larger incrassate cells or occasionally cells undifferentiated and uniformely incrassate, dorsal surface cells often larger, incrassate, dorsal surface rough; in distal section ventral cells incrassate, completely covering guide cells, dorsal cells incrassate or stereids, dorsal surface with projecting cells or single-celled lamellae. Upper laminal cells quadrate to rhomboidal, incrassate; basal cells rectangular, thin-walled, hyaline to yellowish; alar cells not differentiated to weakly bulging, rectangular, thin-walled, hyaline to yellowish or rarely reddish. Perichaetia terminal, leaves undifferentiated. Seta 10-12 mm long, yellowish; capsule cylindrical, 0.8-1.2 mm long, plicate dry; exothecial cells rectangular, sinuate, incrassate; peristome teeth 16, triangular, cleft above, 0.3-0.4 mm long, striate below, papillose and hyaline above; operculum rostrate; calyptra cucullate, 1.5 mm long; spores round, 13-15 µm, pale yellow, granulate.
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Plants 3 mm, gregarious or in loose, low tufts, forming low rosettes, appearing stemless, light to olive green. Leaves 3 mm, erect-patent, flexuose when dry, from lanceolate base gradually con-tracted into a long, fine, straight, concolorous, distinctly canaliculate subula; margins serrate in the distal part of the leaves; alar cells scarcely differentiated; basal laminal cells hyaline, thin-walled, rectangular; distal laminal cells thick-walled, rectangular, ca. 4:1; costa filling 1/2-2/3 of leaf width, excurrent, in transverse section with large, empty, adaxial hyalocysts and abaxial groups of stereids, abaxially smooth. Specialized asexual reproduction by colorless, multicellular, long-cylindric rhizoidal tubers, 300-700 µm long, deciduous leaves and small brood leaves produced at stem tips. Sporophytes not present in North America.
Plants forming cushions, yellow-green. Stems 2-15 mm long. Leaves weakly contorted when dry, erect-spreading when wet; narrowly linear-ovate to ovate-subulate, 2.5-6.0 mm long, broadly channelled ventrally; margins entire to serrulate; costa percurrent or excurrent as short, denticulate tip; in section ventral cells large, dorsal cells incrassate or in stereid groups, dorsal surface rough or with projecting cells. Upper laminal cells quadrate or rectangular to rhomboidal, incrassate; basal cells rectangular, thin-walled, hyaline; alar cells weakly differentiated. Capsule erect, cylindrical.
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