Vietnam, Thua Thien – Hue Prov., Nam Dong Distr., Huong Son Municipality, around point 16°09'58''N, 107°36'07''E. Fractionally logged primary closed broad-leaved evergreen lowland forest along La Ma River on very steep hill slopes composed with clayey shale and sandstone at elevation 300-400 m a.s.l. Shrub or treelet 3-4 m tall on very steep rocky stream slope. Flowers dull dirty purple. Not common.
Record creation: 2026-10-19, Аверьянов Леонид ВладимировичCitation: Specimen LE 01360725 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01360725