Watercress (Nasturtium officinale) , also known as NA, is scientifically classified as Kingdom: Plantae (unranked): Angiosperms (unranked): Eudicots (unranked): Rosids Order: Brassicales Family: Brassicaceae Genus: Nasturtium Species: N. officinale.

Watercress is a leafy green food source that is a close cousin tomustard greens, cabbage, and arugula. An attractive, succulent plant, watercress bears small, round, slightly scalloped leaves, which, in summer, produce tiny white flowers that become small pods with two rows of edible seeds. Watercress has been cultivated in Europe, Central Asia, and the Americas for millennia for use as both food and a medicine.