FLORA OF VIETNAM
Boraginaceae
Cynoglossum zeylanicum Thunb. ex Lehm.

Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349°N 104.86446°E, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Terrestrial herb in open rocky place along trail. Flowers light blue to almost white. Locally common. Root locally edible being cooked with meat. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1456 (HN, LE01061072, LE01066963).