Citrus
plants are native to subtropical and tropical regions of Asia and the Malay Archipelago. Some citrus species have been present in the Mediterranean basin [...] irrigation. Today, in the United States, the most important commercial varieties include oranges, grapefruit, lemons, and tangerines and to a lesser extent, [...] of flowering trees and shrubs in the rue family, Rutaceae. This includes any small tree or spiny shrub, including the lemon, lime, orange, tangerine,