Hoa Binh Prov., Lac Son Distr., Ngoc Son Municipality, Khu village, around point 20°26’31”N 105°19’32”E. Primary broadleaved forest on steep rocky slopes of remnant mountain composed with solid crystalline highly eroded limestone at elevation about 550-650 m a.s.l. Terrestrial herb on shady rocky slope. Flowers white, fruits dark green. Locally abundant.
Record creation: 2021-11-12, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01122756 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01122756