Vietnam, Thua Thien – Hue Prov., A Luoi Distr., Huong Nguyen Municipality, in vicinities of Tra Ve forest protection station, around point 16°13'47''N, 107°27'47''E at elevation about 120 m a.s.l. Secondary closed evergreen broad-leaved forest on steep hill and mountain slopes composed with shale. Aquatic herb with short thick tuber-like rhizome in shallow water of small stream in clean water. Flowers white, sweet fragrant. Fruits green. Rare.
Record creation: 2026-10-19, Аверьянов Леонид ВладимировичCitation: Specimen LE 01360729 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01360729