About Odontonema callistachyum (Cham. & Schltdl.) Kuntze
Odontonema callistachyum, commonly called purple firespike, is a flowering plant species that belongs to the Acanthaceae family. This plant is native to Mexico and northern Central America, and has been introduced to Cuba and the Dominican Republic. It is a perennial shrub that usually grows in seasonally dry tropical habitats. It is cultivated as an outdoor ornamental plant and can tolerate shade conditions.