17. Hyophila Brid. 湿地藓属 shi-di xian shu
Bryol. Univ. 1: 760. 1827.
Plants small, to 10 mm high, green above, red to reddish brown or dark green below, in dense tufts. Stems erect, simple, rarely branched; central strand present or absent. Leaves usually rosulate, incurved or contorted when dry, oblong-elliptic to oblong-spatulate or oblong-lanceolate to lanceo-ligulate, blunt to rounded-obtuse or weakly apiculate at the apex; margins entire or serrulate; costa stout, percurrent to shortly excurrent; upper leaf cells small, quadrate to rounded-hexagonal, smooth or papillose; basal cells rectangular, smooth, hyaline. Dioicous or autoicous. Perichaetial leaves smaller than or similar to stem leaves. Setae elongate, straight; capsules erect, oblong-cylindrical; annuli differentiated, deciduous; peristome absent; opercula conic-rostrate, usually with long oblique beak. Calyptrae cucullate, smooth. Spores spherical, small, smooth.