5. Cyclodictyon Mitt. 圆网藓属 yuan-wang xian shu
J. Proc. Linn. Soc., Bot. 7: 163. 1863.
Plants slender, medium-sized, soft, delicate, yellowish green, not glossy, in flat mats. Stems prostrate, irregularly branched, flat, rhizoids sparse. Leaves laxly areolate, in 5–8 rows, complanately arranged, dimorphic and asymmetric, ventral and dorsal leaves appressed on stems, lateral leaves larger, ovate to oblong-lanceolate, concave, acute, acuminate to mucronate; costae double, extending beyond the midleaf; margins plane, entire, toothed apically, with a strongly differentiated border; leaf cells large, rounded, oval-hexagonal to shortly rhomboidal, smooth. Autoicous or dioicous. Perichaetial leaves small. Setae elongate, smooth; capsules ovoid to oblong-ovoid with a short neck; opercula conic, long-rostrate; exostome teeth slenderly lanceolate, transversely striolate; endostome segments papillose; cilia present. Calyptrae mitrate, laciniate at base.