Hoa Binh prov., Lac Son distr., Tu Do municipality, Mon village, around point 20°25’29”N 105°19’36”E, primary broadleaved forest on steep rocky slopes of remnant mountain composed with solid crystalline highly eroded limestone at elevation about 500-700 m a.s.l. Terrestrial herb in shady place. Not rare.
Record creation: 2021-11-12, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01122775 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01122775