Thanh Hoa Prov., Thuong Xuan Distr., Bat Mot Municipality, Vin village, Xuan Lien Natural Reserve.
Primary broad-leaved evergreen forest on rocky, highly eroded, crystalline limestone at elevation 900-1000 m a.s.l. around point 20°00′00.4″N 104°59′00.7″E.
Lithophytic prostrate herb on open mossy rocks. Flowers light blue. Common.
2 November 2013 CPC 6522 L.Averyanov, N.T.Hiep, N.S.Khang