Cao Bang Prov., Bao Lac Distr., Hong An municipality, Lung Pan village.
Open secondary scrub and grasslands on steep alluvial slope of limestone hill along road at elevation about 1050 m a.s.l. around point 22°48′50.5″N 105°46′28.0″E.
Shrub 1-2 m tall on open slopes. Flowers yellow. Very common. Co-dominant of secondary scrub.