FLORA OF VIETNAM Orchidaceae Mischobulbum longiscapum Seidenf.
Vietnam, Quang Binh Prov., Minh Hoa Distr., Dan Hoa municipality, Chuong Lon mountain, Vietnam-Laotian border, about 6 km to N of Cha Lo borders station, around point 17°44′04″N 105°46′53″E. Primary broad-leaved forest on very steep slopes and rocky cliffs of remnant mountain composed with solid marble-like highly eroded limestone at elevation 400-700 m a.s.l. Lithophytic herb on shelves of vertical cliff. Flowers light green. Leaves and pseudobulbs dark brown-violet. Rare. HAL 11681 19 April 2008 photo Coll.: L.Averyanov, P.K.Loc, N.T.Vinh, N.S.Khang