Ruellia simplex (Britton's wild petunia, Mexican petunia, Mexican bluebell) is a species of flowering plant in the acanthus family, Acanthaceae. It is a native of Mexico, the Caribbean, and South America. It has become a widespread invasive plant in Florida, where it was likely introduced as an ornamental before 1933.
Clade: Core Eudicots/Asterids
Species: Ruellia brittoniana