Myrtaceae Eugenia uniflora L.
Source: Magness et al. 1971
The tree is small, up to 20 feet, sufficiently hardy to grow in central Florida and southern California. It is often grown as a bush or hedge. Leaves are entire, oblong, up to 3 inches, pointed at the terminal and glabrous. The fruits are an inch or more in diameter, near globose to oblate in shape, glabrous, but generally ridged. Each fruit contains 1 or 2 seeds. Flavor is quite tart, but not quite as tart as sour cherries. Fruits are seen on the markets in tropical countries, where two crops per year may be produced. In areas of continental U.S., where grown, only one crop is produced, and production is not commercial.