Plants small, in thin mats or patches, dark green to blackish. Stems irregularly branched, ; paraphyllia absent; rhizoids in clusters arising from base of leaves. Stem and branch leaves slightly differentiated. Stem leaves appressed to erect when dry, erect-spreading when moist, lanceolate, not to weakly plicate on either side of costa; margins recurved proximally, entire to weakly serrulate distally; apex abruptly to gradually acuminate or subulate, hair-point absent; costa single, (strong), nearly reaching apex to percurrent, not 2-fid or sinuate, ; alar cells not well differentiated; proximal laminal cells 1-2:1, walls not or obscurely pitted; medial cells mixed isodiametric, (1-2:1), smooth, walls firm. Branch leaves more ovate-lanceolate, smaller; medial laminal cells usually 1:1. Specialized asexual reproduction by clustered flagelliform branchlets in axils of distal secondary branch leaves. Sexual condition dioicous; perichaetial leaves pale translucent, longer, apex more acuminate. Seta 1-1.2 cm. Capsule erect to inclined, subcylindric, symmetric; annulus present; operculum conic, short-rostrate; peristome reduced; exostome teeth lanceolate or linear-lanceolate, striolate basally, papillose distally; endostome basal membrane high, segments irregular to filiform, cilia rudimentary to absent. Spores 13-18 µm, finely papillose.
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