FLORA OF VIETNAM
Orchidaceae
Phaius tonkinensis (Aver.) Aver.

Hoa Binh Prov., Lac Son Distr., Tu Do Municipality, Coi Gao village, around point 20°26′07”N 105°17′19”E.

Secondary rich forest on steep rocky slopes of limestone mountain at elevation about 600 m a.s.l.

Terrestrial herb on shady mossy slope. Not common.

CPC 1487 24 March 2011
Coll.: N.Q.Hieu, L.Averyanov, N.T.Hiep, P.K.Loc, P.V.The, N.T.Vinh, T.B.Ngan, N.Tap, D.D.Dao, V.T.Ha.

Fl. under cultivation at October – November 2012. Flowers odorless, sepals and petals white, lip light purple-violet, with unclear fuzzy white spots. Column white.