Quang Binh Prov., Minh Hoa Distr., Dan Hoa Municipality, Bai Dinh village around point 17°45′28”N 105°46′14”E.
Very steep rocky slopes of highly eroded marble-like solid remnant limestone mountains at elevation 600-700 m a.s.l.
Terrestrial rosulate herb on shady very steep rocky slope. Leaves dark glossy green with whitish longitudinal wide stripe. Flowers greenish, often with dirty violet tint. Fruits blue. Not rare.
HAL 12209 4 February 2009 Coll.: L.Averyanov, P.K.Loc, N.T.Vinh, L.T.Son.