What is of, pertaining to, or derived from, the celandine. Cheidonic acid, a weak acid extracted fron the celandine (Chelidonium majus), as a white crystalline substance called?

chelidonic — Of, pertaining to, or derived from, the celandine. Cheidonic acid, a weak acid extracted fron the celandine (Chelidonium majus), as a white crystalline substance. (Webster's 1913.)

Sources