bittercress

noun

1. any plant belonging to the genus Cardamine, of the mustard family, having usually pinnate leaves and clusters of white, pink, or purple flowers.

noun

1. one of several perennial or annual plants of the genus Cardamine, that are related to lady’s-smock, including hairy bittercress (C. hirsuta), a common weed resembling shepherd’s purse, with which it is often confused: family: Brassicaceae (crucifers)