S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, vicinities Klong Lanh village, 32 km to NNE from Dalat city (N 12° 08′, E 108° 39′). Old open secondary dry coniferous forest with domination of Pinus kesiya at 1500-1550 m alt. in 7-8 km from Bi Dup main peak to the W. Prostrate herb with blue-violet flowers in open place along stream. Common. VH 3726 06.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)