Plants gregarious to loosely tufted, 5-10(-20) mm, light-green when moist, dark green when dry; protonema thallose, branched. Stems erect, simple or forked by innovation. Leaves small and remote toward stem base, larger and crowded in open rosettes distally; rounded-obtuse at the apex; margins plane or somewhat undulate, entire except for long, flexuose cilia at basal margins of distal leaves; costa single, broad at leaf base, ending 6-10 cells before the apex; alar cells absent. Specialized asexual reproduction by discoid brood bodies produced among rosettes of leaves, mingled with sex organs, particularly antheridia, and on protonema. Sexual condition variably synoicous and autoicous; perigonial and perichetial leaves scarcely differentiated. Seta present, single, long. Capsule erect, subglobose or hemispheric, wide-mouthed, neck long, fleshy, 2-4 mm, tapered toward seta, hollow for the greater part of its length; stomata numerous, stomates present in distal part of capsule, with 2 guard cells; peristome and annulus absent; operculum strongly convex and bluntly umbonate or weakly convex and more or less apiculate; columella included. Calyptra small, cucullate, smooth and naked, readily deciduous. Spores tetrahedral, with densely crowded papillae.