N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Co Lung Municipality, Khuyn village, around point 20o26'31''N, 105o14'55''E. Primary evergreen seasonal broad-leaved lowland forest on crystalline marble-like highly eroded limestone, steep rocky slopes of limestone ridge at elev. 500-800 m. Semishrub 1-1.5 m. Flowers violet. Very common on elev. 300-800 m.
Record creation: 2026-10-19, Аверьянов Леонид ВладимировичCitation: Specimen LE 01360696 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01360696