FLORA OF VIETNAM Orchidaceae Phaius flavus (Blume) Lindl.
Dien Bien Prov., Muong Cha Distr., Hua Ngai Municipality, Ha La Chu Village, around point 21°53′46”N 103°10′17”E.
Highly degraded primary evergreen broadleaved humid forest on very steep slopes of remnant mountains composed with solid limestone at elevation 1100-1400 m a.s.l.
Lithophytic herb to 1.5 m tall on shady steep rocky slope. Flowers yellow, lip apex yellow-brown. Leaves often with yellow marks. Common.
CPC 1943 07 April 2011 Coll.: L.Averyanov, P.K.Loc, N.Q.Hieu, N.T.Vinh.