1. Actinodontium Schwaegr. 假黄藓属 jia-huang xian shu
Sp. Musc. Frond., Suppl. 1, 2(2): 75. 1826.
Plants small, flaccid, tuft-forming, yellow to yellowish green, often glossy. Stems flattened, up to 1.5 cm long, simple or sparsely branched; central strand not differentiated. Leaves crowded, shrunken when dry, not complanate, erect-spreading when wet, oblong-lanceolate, gradually acuminate; leaf margins entire, without differentiated border, involute at lower half; costae double, extending beyond midleaf; laminal cells elongate or rhomboidal, becoming oblong-hexagonal apically and rectangular basally. Autoicous. Setae erect, smooth, short; capsules erect, ovoid-cylindrical; opercula conic-rostrate; exothecial cells non-collenchymatous; exostome teeth narrowly lanceolate, keeled, papillose. Calyptrae mitrate, laciniate at base, covering only the apex of capsule.