Veronica americana

Veronica americana, variously called American brooklime or American speedwell, is a plant native to temperate and arctic Asia and North America where it grows in streams and bottomlands.

It is a herbaceous perennial with glabrous stems 10–100 cm long that bear terminal or axillary racemes or spikes of soft violet flowers. The leaves are 1.5–8 cm long and 3 to 20 times as long as wide, short-petiolate, glabrous, serrate to almost entire.