FLORA OF VIETNAM Orchidaceae Thrixspermum stelidioides Aver. et Averyanova
Vietnam, Quang Binh Prov., Minh Hoa Distr., Dan Hoa municipality, Vietnam-Laotian border, around Cha Lo military station, point 17°42′50″N 105°45′54″E.
Broad-leaved primary forest on very steep slopes and along ridge of remnant mountain composed with highly eroded solid marble-like gray limestone at elevation 500-750 m a.s.l.
Epiphyte in shady place. Flowers yellowish, lip side-lobes with reddish-brown stripes, lip at the center inside with brown hairy callus. Not common.
HAL 11782 20 April 2008 photo Coll.: L.Averyanov, P.K.Loc, N.T.Vinh, N.S.Khang