FLORA OF VIETNAM Orchidaceae Thecostele alata (Roxb.) Par. & Rchb.f.
Quang Tri Prov., Da Krong Distr., Ta Rut municipality, A Pul village, around point 16°24′29”N 107°01′07”E.
Highly destroyed primary and secondary broadleaved evergreen open forest along rocky river canyon composed with shale and sandstone at elev. about 300 m a.s.l.
Epiphyte on rather open river slope. Tepals yellow with purple-brown marks, lip and column white. Rare.