The marvelous plant from which coffee derives is the coffee tree (Coffea arabica, canephora, liberica), an exquisite beauty of nature. Coffee makes up the genus Coffea of the family Rubiaceae. Arabian coffee is classified as Coffea arabica, robusta coffee as Coffea canephora, and Liberian coffee as Coffea liberica. According to botanical evidence, Coffea arabica originated in central Ethiopia.