FLORA OF VIETNAM Orchidaceae Hygrochilus parishii (Reichenb.f.) Pfitz.
N. Vietnam, Prov. Cao Bang, distr. Tra Linh, municipalite Quoc Toan, vicinity of Thang Heng and Lung Tao villages near Thang Heng lake. Open dry primary mixed forest with domination of Keteleeria fortunei on tops of limestone mesas and ridges at 700-950 m alt. Epiphytic and epilitic shrublet on open dry forest and on open rocks near and on tops of mesas. Flowers yellow, tepals with purple-brown marks, lip yellow with purple-violet center. Not rare. VH 4913 25-27.05.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)