Plants large, forming patches, dark green to blackish green; terricolous or saxicolous, aquatic to semi-aquatic. Stems 10-20 mm long, unbranched; in section elliptical, central strand present, inner cortical cells large, incrassate, in 3-4 rows, outer cortical cells smaller, strongly incrassate, marginal row stereids or substereids. Leaves crowded, larger above, appressed, curved dry, appressed to erect wet, linear-lanceolate, 3-5 mm long, bistratose above and in dorsal laminae; apex long-acuminate; margins elimbate, plane, entire; costa percurrent or ending just below apex. Vaginant laminae 1/2 to 3/4 of leaf length, unistratose, termination of one blade laminal; dorsal lamina bistratose, tapering proximally, generally ending well above insertion. Laminal cells rounded, quadrate to rectangular or angular, 10-17 µm long, incrassate, smooth. Dioicous. Perichaetia terminal; leaves undifferentiated. Seta 5-6 mm long, yellowish; capsule erect, urn short-cylindrical, to 1 mm long, red-yellow; exothecial cells quadrate to rectangular, thickened; peristome teeth deeply cleft, reddish; operculum rostrate; spores (immature) round, 12-15 µm, smooth.
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