Blackberries are a bramble fruit within the Rosaceae family. A member of the Rubus genus, there are hundreds of specific varieties of Blackberries. The name Blackberry is often used as a generic term that refers to a wide range of bush berries that are considered Blackberries. These include loganberries, boysenberries, marionberries and ollalieberries. Blackberries are characterized by their coloring, their unique composition and their flavor. Like raspberries, Blackberries are not technically a berry but rather an aggregate fruit of individual drupes held together by very fine, nearly invisible hairs. Blackberries do not have a hollow center, instead they have a solid, edible core. When ripe, Blackberries have a deep inky sheen with purple highlights. They are succulent, soft, and juicy. Their flavor is sweet and slightly with tart earthy undertones.