Son La Prov., Van Ho Distr., Van Ho comm., Hua Tat village, around point 20°46’21.7N 104°47’47.5E.
Remnants of primary evergreen broad-leaved and mixed forest (with Pinus wangii) on very steep rocky slopes and on mountain tops composed with highly eroded karstic light gray marble-like limestone at elevation 1300-1350 m a.s.l.
Lithophytic herb on very steep rocky shady slope. Not rare.
Record creation: 2021-11-10, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01089596 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01089596