Macrocoma (Hornsch. ex C. Müll.) Grout, Bryologist 47: 4. 1944.
Plants slender, in reddish brown to olive‑brown mats. Stems creeping, irregularly or subpinnately branched with erect‑ascending branches. Leaves erect‑appressed when dry, weakly keeled, lanceolate, ovate‑lanceolate or ovate; apices obtuse, acute or acuminate; costae strong, percurrent; margins crenulate or entire; cells short, rounded above, rounded to elliptic below, smooth, unipapillose, or mammillose. Setae erect. Capsules exserted, elliptic to oblong‑cylindrical, smooth or plicate; opercula conic rostrate; peristome double, single or absent, exostome teeth usually reduced. Spores large, isosporous, to 50 μm. Calyptrae mitrate to campanulate, variously hairy.