Fam. Orchidaceae

Rhomboda petelotii (Gagnep.) Ormerod

N.Vietnam, Cao Bang Prov., Trung Khanh Distr., Ngoc Khe Municipality, Pac Nga village, around point 22º54'59''N, 106º31'44''E, at elevation 800-850 m a.s.l. Remnants of primary evergreen broad-leaved forest along tops of rocky ridges and mesae composed with light gray solid marble-like highly eroded crystalline limestone. Terrestrial and lithophytic creeping herb on rocky mossy slope. Leaves deep brown-violet with central white stripe. Rare.

No HAL 5561 10 June 2004

Collectors: L.Averyanov, P.K.Loc, P.V.The, N.T.Vinh.