Acca sellowiana, a species of flowering plant in the myrtle family, Myrtaceae, is native to the highlands of southern Brazil, eastern Paraguay, Uruguay, northern Argentina, and Colombia. It is widely cultivated as a garden plant and fruiting tree. Common names include feijoa, pineapple guava and guavasteen, although it is not a true guava. It is an evergreen, perennial shrub or small tree, 1–7 metres (3.3–23.0 ft) in height, widely cultivated as an ornamental tree and for its fruit. (source)