Ha Giang Prov., Quan Ba Distr., Thai An Commune, Seo Lung Two Village, around point 22.96988ºN 105.08646ºE. Very steep mountain slopes composed of stratified shale and clayey subsoil at elevation 800–1000 m a.s.l. Primary and secondary evergreen broad-leaved humid forest. Terrestrial herb to 1 m tall on steep shady rocky river slope. Flowers white. Common. 10 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1512 (HN, LE01067105, LE01070179).
Coordinates (geographic position):22° 58′ 11.57″ N, 105° 5′ 11.26″ E ±1000 mRecord creation: 2020-02-07, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01067105 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01067105