FLORA OF LAOS Orchidaceae Bulbophyllum depressum King et Pantl.
Houphan Prov., Viengxay Distr., Xieng Luong village, around point 20°22′06.1′'N 104°17′18.6′'E.
Primary and secondary broad-leaved evergreen dry forest on very steep rocky slopes of highly eroded mountains composed by solid marble-like limestone at elev. 600-700 m a.s.l.
Creeping epiphyte on small mossy tree in shady place on mountain top. Flowers white, apices of tepals and petals purple-violet, lip dark purple-violet, column and anther white. Not common.