Rorippa aquatica (Eaton) E.J. Palmer & Steyerm.  

Family: Brassicaceae

lakecress, more... (fr: armoracie des étangs)

[Armoracia aquatica (Eaton) Wiegand, moreArmoracia lacustris (A. Gray) Al-Shehbaz & V.M. Bates, Nasturtium lacustre A. Gray, Neobeckia aquatica (Eaton) Greene, Rorippa americana (A. Gray) Britton]