Pinguicula planifolia, commonly known as Chapman's butterwort, is a species of carnivorous plant belonging to the genus Pinguicula. The typical variety forms a purple (and sometimes pinkish or white) flower in blooming. Like other butterworts, it has sticky adhesive leaves that attract, capture and digest arthropod prey to supply the plant with nutrients. An identifying features of the Chapman's butterwort are the thin, flat leaves which often display a deep red to purple color when in full sun.