FLORA OF VIETNAM
Orchidaceae
Bulbophyllum violaceolabellum Seidenf.

Son La Prov., Mai Son Distr., Hat Lot town, around point 21°13′05”N 104°06′44”E.

Secondary evergreen dry open broad-leaved forest on very steep rocky slopes and on tops of remnant mountain composed with highly eroded marble-like solid crystalline limestone at elevation 550-650 m a.s.l.

Creeping epiphyte on gnarled trees on top of mountain. Occasional

CPC 1156a/4 21 December 2010
Coll.: L.Averyanov, P.K.Loc, P.V.The, N.T.Vinh.

Fl. under cultivation at 25 April 2011
Flowers odorless; sepals and petals yellowish with purple brown marks, lip white with numerous small violet marks, column and operculum yellow. L.Averyanov 26 April 2011. Photos.