What is "wild orange"

1. n. small fast-growing spiny deciduous Chinese orange tree bearing sweetly scented flowers and decorative but inedible fruit: used as a stock in grafting and for hedges [syn: trifoliate orange, trifoliata, Poncirus trifoliata]

2. small flowering evergreen tree of southern United States [syn: cherry laurel, laurel cherry, mock orange, Prunus caroliniana]

Wild orange is a common name for several plants bearing fruit reminiscent of oranges. They are not necessarily related to family Rutaceae (which contains true oranges). Plants called wild orange include:

• Capparis mitchellii - family Capparaceae, from Australia
• several uncultivated Citrus species (family Rutaceae), particularly Citrus macroptera, from Malesia and Melanesia
• Osage-orange - Maclura pomifera, family Moraceae, from North America