1663 Veronica longifolia L.

Syn.: Pseudolysimachium longijolium (L.) Opiz

This variable, mainly boreal-montane species is now widely distributed in Eurasia and partly N. America. N of the broken line var. borealis Trautv. (syn.: var. septentrionalis Boriss.) dominates. The species has sometimes escaped from cultivation within and outside the range. It has been introduced into N. and S. America.