S. Vietnam, Prov. Lam Dong, 14 km to NNW from Dalat city (N 12° 05′, E 108° 22′). Primary closed mixed forest with Pinus kesiya and P. krempfii at 1740-1760 m alt. Shrub up to 4 m hg in wet place along stream. Flowers from blue to deep blue. Common. VH 2493 11.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)
Collectors: L. Averyanov, N.Q. Binh, N.V. Duy, P.K. Loc