Anisothecium Mitt., J. Linn. Soc., Bot. 12: 39. 1869.
Plants small, terrestrial, in tufts or mats; stems erect, simple or sparsely branched, radiculose at base. Leaves distant below and smaller than upper leaves, erect-spreading to recurved from an ovate-lanceolate or strongly clasping-ovate base, narrowly lanceolate; margins entire below, serrulate above; costa single, stout, percurrent or excurrent; cells smooth; alar cells not differentiated. Dioicous. Setae elongate, erect and weakly flexuous to straight; capsules ovoid to oblong; annuli of several rows of small, thick-walled, non-revoluble cells; stomata present; opercula short rostrate; peristome teeth 16, well-developed, papillose to papillose-striate, divided, inserted above the mouth on a short, smooth basal membrane. Calyptrae cucullate, smooth.