Also called Horse-Apple or Bois d'Arc, this species has been widely planted and naturalized throughout the United States as part of Franklin Delano Roosevelt’s “Great Plains Shelterbelt” project. It has naturalized in parts of Canada. This 8-15 m tall tree produces distinctive bumpy, spherical fruits, 7-15 cm in diameter. These fruits smell faintly of oranges, but cause nausea if ingested.