Hornemann's willowherb

Perennial herbaceous plant. Grows in marshes.

There are 30 observations of Hornemann's willowherb in Québec, mostly in Côte-Nord, Gaspésie–Îles-de-la-Madeleine and Nord-du-Québec, and it has been reported in 6 of the 17 regions. They peak in July and become rare from October to May.