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.
Coordinates (geographic position):28° 8′ 11″ N, 105° 0′ 48″ E ±1000 mRecord creation: 2020-06-20, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01067772 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01067772