Celandine

A perennial herbaceous plant (Chelidonium majus) of the poppy family, with yellow flowers. It is used as a medicine in jaundice, etc., and its acrid saffron-colored juice is used to cure warts and the itch; -- called also greater celandine and swallowwort.

perennial herb with branched woody stock and bright yellow flowers

North American annual plant with usually yellow or orange flowers; grows chiefly on wet rather acid soil