FLORA OF VIETNAM
Orchidaceae
Ceratostylis siamensis Downie

Vietnam, Nghe An Prov., Tuong Duong Distr., Tam Hop Municipality, Pa Lom village, around point 19°04′41″N 104°20′51″E at elevation 1400-1500 m a.s.l.

Submontane primary evergreen closed forest on very steep mountain slopes composed with stratified solid shale.

Epiphyte on tall mossy trees on rocky shady steep rocky slope. Flower buds yellowish-white, sepals with purple nerves. Very common.

HLF 6978 24 March 2007.

Coll. Averyanov L., P.K.Loc, N.V.Trai, N.T.Vinh, N.D.Phuong, Averyanova A.
Grant from Henry Luce Foundation.