Vietnam, Quang Binh Prov., Bo Trach Distr., Tan Trach Municipality, about 1.5 km to SE of A Rem village (17º23'32''N, 106º12'46''E). Primary closed coniferous forest (with Calocedrus rupestris) on steep slopes and on tops of rocky ridge composed with solid marble-like highly eroded stratified crystalline limestone at elevation about 750-900 m a.s.l. Lithophytic herb on vertical mossy cliffs. Flowers light blue. Common.
Coordinates (geographic position):17° 23′ 32″ N, 106° 12′ 46″ E ±1000 mComment:
New species?
Record creation: 2020-02-07, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01067541 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01067541