FLORA OF VIETNAM Rubiaceae Argostemma sp. (or Ophyorrhiza sp.)
S.Vietnam, Thua Thien Hue Prov., Phu Loc Distr., Bach Ma National Park, S slope of Bach Ma mt below Hai Vong Dai peak, to SW of point 16°11′41′'N 107°51′26′'E at elev. 1100-1300 m a.s.l.
Mixed and broad-leaved evergreen secondary closed wet mt forest on very steep shale/granite slopes. Lithophytic herb in wet crevices of open waterfall cliff. Flowers white, anthers yellow. Very common.
HLF 1363 27 April 2003. (Photo).
Coll. N.T.Hiep, L.Averyanov, N.T.Vinh et al. Grant from Henry Luce Foundation.