any of several species of small trees or shrubs of the genus Citrus of the family Rutaceae ... The species of orange most important commercially are the China orange, also called the sweet, or common, orange ... The tree of the sweet orange often grows to a height of 6 metres (20 feet) and sometimes attains 10 m. The broad, glossy, evergreen leaves are medium sized and ovate; the petioles (leafstalks) have narrow wings. Its flowers are very fragrant., igihaljas viljapuu tsitruse prk-st; pärit arvat. Kagu-Aasiast, tuntuim ja levinuim tsitruseliik