FLORA OF VIETNAM Orchidaceae Vanda gracilis Aver. Type
Quang Binh Prov., Tuyen Hoa Distr., Lam Hoa municipality, Chuoi village, around point 17°56′51”N 105°49′18”E.
Primary broadleaved evergreen dry forest on very steep slopes and on tops of rocky ridge composed with highly eroded crystalline limestone at elev. 200-250 m a.s.l.
Lithophytic semi woody vine to 2 m long on open rocks along rocky ridge. Locally abundant.
Flowered under cultivation at Jan. 2014. Tepals brown with unclear yellowish-brown tessellation, outside nearly almost white, lip white, apex brown, center with 4 brown grooves, side lobes inside with fine purple marks, column white, operculum white, pollinia yellow. Photos.