Quang Nam Prov., Dai Loc Distr., Dai Hong municipality, environs of Dai Hong town around point 15°49′19”N 107°56′58”E.
Rich secondary broadleaved evergreen forest on very steep rocky slopes and cliffs composed with eroded sandstone at elev. 400-500 m a.s.l.
Shrub or treelet to 4-5 m tall on very steep rocky slope. Flower white, disk light yellow-green. Common. Co-dominant of vegetation on open rocky outcrops.