Holomitrium Brid., Bryol. Univ. 1: 226. 1826.
Plants small to robust, tufted, yellow-green above, brownish below; stems erect, central strand present. Leaves typically erect at base, more or less clasping, keeled or concave above, erect spreading wet, crispate to spirally contorted dry; margins serrate to crenulate, rarely nearly entire; costa strong, percurrent or excurrent, smooth at back or with a few apical teeth; cells smooth, elongate and porose at base, distinctly shorter above; alar cells differentiated, persistent or fugacious. Pseudautoicous. Perichaetial leaves sheathing to convolute at base, long setaceous above, at times reaching and overtopping the capsules; capsules erect, cylindrical to oblong; stomata present; opercula subulate-rostrate; peristome teeth undivided or fenestrate, densely papillose on the outer surface; annuli absent. Calyptrae long, cucullate, entire at base. Spores spherical, weakly papillose.