What's the difference between i.e. and e.g.?
(Maclura pomifera), thorny tree with large, yellow-green, wrinkled fruit and a milky sap that can produce dermatitis in humans. It is the only species of its genus in the mulberry family (Moraceae). It is native to the south-central United States but has been planted extensively farther north in the Mississippi River valley and at points east of there.