Rorippa aquatica

Rorippa aquatica (syns. Neobeckia aquatica and Armoracia lacustris), the lakecress or lake cress, is a species of freshwater aquatic flowering plant in the family Brassicaceae.^[2] It is found in eastern and central North America, generally in the Great Lakes and Mississippi watersheds.^[1] A submerged perennial, it has emergent flowering branches.^[3] It is typically found in slow-moving water, such as oxbow lakes. It is used as a foreground aquarium plant, as it is undemanding and very slow-growing.^[4]

Rorippa aquatica
Botanical illustration
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Brassicales
Family:	Brassicaceae
Genus:	Rorippa
Species:	R. aquatica
Binomial name
Rorippa aquatica (Eaton) E.J.Palmer & Steyerm.
Synonyms[1]
List Armoracia americana (A.Gray) Hook. & Arn. Armoracia aquatica (Eaton) Wiegand Armoracia aquatica f. capillifolia Vict. & J.Rousseau Armoracia lacustris (A.Gray) Al-Shehbaz & V.Bates Cochlearia aquatica (Eaton) Eaton Cochlearia armoracia var. aquatica Eaton Nasturtium lacustre A.Gray Nasturtium natans Hook. Nasturtium natans var. americanum A.Gray Nasturtium natans var. brevistylum Torr. & A.Gray Neobeckia aquatica (Eaton) Greene Radicula aquatica (Eaton) B.L.Rob. Rorippa americana (A.Gray) Britton