3. Calyptrochaeta Desv. 毛蒴藓属 mao-shuo xian shu
Mém. Soc. Linn. Paris 3: 226. 1825.
Plants brownish green, in lax tufts. Stems simple or branched, with complanate, flexuous leaves when dry, flat, laxly foliate, usually with conspicuous clusters of brown, filiform propagula in upper leaf axils. Leaves dimorphic, lateral leaves spreading, leaves of dorsal and ventral rows smaller and erect, ovate, shortly acuminate, bordered, serrate above; costa short, forked; laminal cells lax, smooth, rhomboidal or fusiform in the upper half of the leaf, becoming narrowly rectangular at base. Perichaetial leaves smaller. Setae lateral, spinose; capsules ovoid or oblong-ovoid, horizontal; exostome teeth striolate below, becoming papillose above; opercula conic, beaked. Calyptrae campanulate, lobed at base.