FLORA OF VIETNAM
Orchidaceae
Ceratostylis siamensis Downie

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 1300-1500 m a.s.l.

Primary broad-leaved evergreen submontane forest on very steep rocky shale southern slopes of Sa Mui Mountain.

Epiphyte on tall mossy trees. Common.

HLF 5829 29 March 2006.

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.