Mulberry, the small fruit of the mulberry tree. There are three kinds of mulberry: black, red, and white. However, the white mulberry tree, which has diversely-shaped leaves, also bears fruit of various colours, namely black, purplish, and above all white. Since all of these fruits have a sickly-sweet flavour, they are all called white mulberries, because they are borne by the white mulberry tree. Black mulberries are well known and known to be edible. Red mulberries are the largest: they are much longer and far more flavourful but virtually unknown, because the red mulberry tree which bears them is extremely rare. For the qualities and properties of these different mulberries, see Mulberry tree.