The Shasta aisy (Leucanthemum x superbum) is a commonly grown herbaceous perennial plant with the classic daisy appearance of white petals (ray florets) around a yellow disc, similar to the Oxeye daisy Leucanthemum vulgare Lam. but larger. Formerly classified in the genus Chrysanthemum, these daisies were transferred to their own genus of Leucanthemum because they lack some traits of true Chrysanthemums. Shasta daisies are characterized by a distinct and unpleasant odor, which makes them unusual amongst flowers.