FLORA OF VIETNAM Orchidaceae Epipactis atromarginata Seidenf.
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.
Lithophytic herb on open wet river rocks and waterfall bluffs. Flowers yellow, tepals with purple-brownish margins. Not common.