Edible fruit. 7 Fresh seeds. The Purple Olive, scientifically known as Olea Africana, is a type of olive tree native to parts of Africa. It typically features small, oval-shaped leaves that are dark green above and silver-hued underneath, providing an attractive contrast. The tree can grow to a height of about 10-30 feet, depending on the environment and care it receives. The fruits of the Purple Olive are small, usually turning from green to a deep purple or black when ripe. These olives are not only visually striking but also rich in oil, making them valuable for culinary uses and traditional medicines in various cultures. The seeds of the Purple Olive can be planted to grow new trees, and they require a well-drained, sunny location to thrive. Overall, Olea Africana is appreciated both for its aesthetic appeal and practical uses.