Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Can Ty commune, Lung Vay village, around point 23º06ʹ02.6ʺN 105º03ʹ04.5ʺE, 1200-1305 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved humid forest on steep rocky slopes near mountain tops. Terrestrial herb with leaves to 1 m tall. Flowers dark dirty purple. Not common. 15 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 211.
Record creation: 2019-05-09, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01050441 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01050441