Ha Giang prov., Quan Ba distr., Tung Vai commune, Thang village, around point 23º03ʹ00.4ʺN 104º52ʹ02.2ʺE, steep rocky slopes of river valley composed with eroded limestone at elevation 1000–1060 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest. Lithophytic herb with leaves to 2 m long in shady wet rocks. Flowers pale yellow. Not rare. 19 October 2018, L. Averyanov, Nguyen Sinh Khang, T. Maisak, Truong Quang Ngan, VR 1015.
Record creation: 2021-11-12, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01122864 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01122864