Ugli Fruit Facts. Just because the name “ugli fruit” reflexively makes you think of the word “ugly” does not mean you should completely ignore this healthy fruit. Ugli™ fruit, is wrapped in a rough, puffy, slightly loose-fitting greenish-yellow to orange fragrant skin. Ranging in size from an overgrown navel orange to a hefty. Scientific Name of Olive vs Ugli fruit. Every living being is classified and known by its scientific name. Olive vs Ugli fruit scientific names are unique and are.