FLORA OF VIETNAM
Orchidaceae
Dendrobium williamsonii Rchb.f.

N. Viet Nam. Ha Giang Province, Quang Ba District, Bat Dai Son
village. Primary forest on limestone with Quercus, Pseudotsuga and
Podocarpus along Chung Ti Tei ridge at elev. 1100-1260 m, 28°08′11″N,
105°00′48″E. Freqent epiphyte. Tepals light yellow-green, edge of lip
and lateral petals bright orange.

DKH 5225 4 April 2000

Collectors: D.K.Harder, N.T.Hiep, L.V.Averyanov, N.Q.Hieu, K.Daria.