Vietnam, Thua Thien – Hue Prov., Nam Dong Distr., Huong Son Municipality, around point 16°10'22''N, 107°36'24''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 about 300 m a.s.l.
Terrestrial herb up to 1.5 m tall on wet slope along rocky stream valley. Flowers red. Occasional.
Record creation: 2021-11-09, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01088958 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01088958