Mum (Chrysanthemum) is a commonly cultivated ornamental plant which consists of over 200 different species of annuals or perennials. The flower heads occur in multiple forms and can be daisy-like or decorative ( like pompons or buttons) as solitary or in clusters. It's often aromatic leaves are arranged in an alternate pattern and sometimes form a basal rosette. Chrysanthemum blooms are divided into 13 different forms by the US National Chrysanthemum Society, which is in accordance with the international classification system.
Toxic components Chrysanthemum flower heads contain arteglasin A and other sesquiterpene lactones. Extended exposure causes contact dermatitis in horses and immediate hypersensitivity reactions can occur.