BotanyCentral strand present. Leaves in 8 rows, base sheathing. Leaves cells in sheath linear, in limb quadrate to hexagonal, mamillose. Costa present. Di- or autoicous. Seta present. Capsule inclined to pendulous, stomata phaneropore Annulus present. Operculum present. Peristome present, exostome of 16 large teeth; endostome of 64 laments from basal membrane. Calyptra cucullate, often persisten.