FLORA OF VIETNAM Orchidaceae Juss. Rhomboda petelotii (Gagnep.) Ormerod
N. Vietnam, Hoa Binh prov., Mai Chau distr., Hang Kia municipality, near Thung Ang village, mountain Tao Xinh (20°43′43′'N, 104°51′21′'E). Primary broad-leaved evergreen dry forest with Calocedrus rupestris (?) on remnant limestone highly eroded ridge at elev 1000-1100 m a.s.l. Terrestrial creeping herb on shady rocky steep slope. Leaves deep velvety green-brown with silver median stripe above, light dull violet below. Occasional.