Dien Bien Prov., Tua Chua Distr., Ta Phin Municipality, around point 22°00′21”N 103°21′39”E.
Open secondary scrub on very steep rocky humid mossy slopes of remnant hills composed with highly eroded marble-like solid crystalline limestone at elevation about 1150 m a.s.l.
Terrestrial herb to 1 m tall among limestone rocks in open place. Flowers light pink-violet. Uncommon weed.
CPC 1020 16 December 2010 Coll.: L.Averyanov, P.K.Loc, P.V.The, N.T.Vinh.