FLORA OF VIETNAM
Orchidaceae
Dendrobium williamsonii Rchbf.

Vietnam, Quang Tri Prov., Huong Hoa Distr., Huong Phung Municipality, Sa Mui pass, around point 16°48′36″N 106°34′44″E at elevation about 1200-1300 m a.s.l. Primary broad-leaved evergreen submontane forest on very steep rocky shale southern slopes of Sa Mui Mountain. Epiphyte on tall trees. Tepals light yellowish, lip with brightly orange-red to red center. Common.
HLF 6298 29 March 2006. Photo.
Coll. N.T.Hiep, L.Averyanov, P.K.Loc, P.V.The, N.S.Khang, P.H.Duc, L.T.Son, S.Bounphanmy, T.K.Ratana, O.Sonliya, T.Q.Dang, N.V.Hien, H.T.N.Trang, L.T.Chau.
Grant from Henry Luce Foundation.