Common names: Watercress
Description: Glabrous perennial. Stem is +_ floating or prostrate on mud
Flowers: White flowers, 3-4 mm wide. Fruit is spreading and 10-15 mm long, oblong and straight. 2 rows of round, 1mm wide, seeds per chamber.
Leaves: Many pinnate leaves, with 3-7 leafelets. Oval or oblong, sometimes wavy on the margins.
Reproduction: By seed.
Flowering: March through November.
Habitat and Ecology: Native to Europe