6. Chenia R. H. Zand. 陈氏藓属 chen-shi xian shu
Phytologia 65: 424. 1989.
Plants small, 0.3–1.0(–2.0) cm high, yellowish green above, brownish below, in loose tufts. Stems short, slender, simple, rarely branched; central strand weak or sometimes well differentiated. Leaves appressed, slightly contorted when dry, spreading when moist, narrowly ovate-lanceolate or ligulate to spathulate; margins plane nearly throughout, sometimes very weakly recurved below, crenulate to irregularly dentate above, broadly acute or apiculate at the apex; costa slender, ending several cells below the apex, in cross section stereid band very weak or absent; upper leaf cells bulging-hexagonal, thin-walled, without papillae; basal cells rectangular, thin-walled. Dioicous. Perichaetia terminal, inner perichaetial leaves slightly differentiated from stem leaves. Setae elongate, reddish brown; capsules erect, ovoid or shortly cylindric; annuli not differentiated; opercula short-conic, sometimes persistent with columella; peristome teeth absent or filiform when present. Calyptrae cucullate or mitrate. Spores small, spherical, smooth or finely papillose.