Herbs perennial, creeping. Rhizomes long. Leaves alternate. Cincinni terminal or axillary, with several flowers, rarely flowers solitary; peduncle short; involucral bracts leaflike, not spathelike. Flowers actinomorphic. Sepals ± free, slightly connate only at base. Petals free, blue or purplish, linear. Stamens 6, all fertile, equal; filaments lanate; anther locules longitudinally dehiscent. Ovary 3-loculed; ovules 2 per locule. Capsule 3-valved, ellipsoid, 3-grooved. Seeds 2 per valve, cylindric-subangular, reticulate; hilum orbicular.

Belosynapsis is distinguished from Cyanotis in having involucral bracts neither spathelike nor imbricate, and petals wholly free.

Three species: S Asia; one species in China.