Note: Information is dated. Do not rely on it.Mulberry. A fruit tree of the genus Morus akin to nettles. The black or common mulberry (Morus nigra) is the species most commonly cultivated as a fruit tree. The fruit is used as a dessert, and is also preserved in the form of a syrup. The juice of the berries mixed with that of apples forms a beverage of a deep port wine color.