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.
Dwarf treelet 1.5 2.5 m tall among secondary shrubs. Flowers white to light yellowish. Rare.