S.Vietnam, Thua Thien Hue Prov., Phu Loc Distr., Bach Ma National Park, N slope of Bach Ma mt system, to the N of point 16°12′11′'N 107°50′23′'E at elev. 400-500 m a.s.l.
Broad-leaved evergreen primary closed wet mt forest along narrow ridge and on very steep sandstone, shale and granite slopes. Treelet or shrub 2.5-4 m tall in open cliff. Flowers white, strong pleasant fragrant. Not common.
HLF 1426 29 April 2003.
Coll. N.T.Hiep, L.Averyanov, N.T.Vinh et al. Grant from Henry Luce Foundation.