- Tao, C., Taylor, C.M., Lantz, H., Flora of China, vol. 19 (Rubiaceae): 83-85 (2011)
- Tao, C., Taylor, C.M., Lantz, H., Flora of China, vol. 19 (Rubiaceae): 301-302 (2011)
Synonymous genera:
- Cyclophyllum Hook.f. (1873)
- Dondisia DC. (1830)
- Keetia E. Phillips (1926)
- Mesoptera Hook.f. (1873)
- Mitrastigma Harv. (1842)
- Plectronia L. (1767)
- Polyozus Lour. (1790)
- Psydrax Gaertner (1788)
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