Dien Bien Prov., Tua Chua Distr., Sin Chai Municipality, around point 22°03’38”N 103°19’56”E. Primary humid evergreen broad-leaved forest on very steep rocky slopes and on tops of remnant mountain composed with highly eroded marble-like solid crystalline limestone at elevation 1350-1500 m a.s.l. Terrestrial and lithophytic undershrub to 1.5 m tall on shady rocky slope. Flowers blue. Very common.
Record creation: 2026-10-19, Аверьянов Леонид ВладимировичCitation: Specimen LE 01360657 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01360657