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To the approved fanlisting for Blackberries, the blackberry is an edible fruit produced by many species in the genus Rubus in the family Rosaceae, hybrids among these species within the subgenus Rubus, and hybrids between the subgenera Rubus and Idaeobatus. The taxonomy of blackberries has historically been confused because of hybridization and apomixis so that species have often been grouped together and called species aggregates.

Bramble bushes typically grow as shrubs (though a few are herbaceous), with their stems being typically covered in sharp prickles. They grow long, arching shoots that readily root upon contact with soil, and form a soil rootstock from which new shoots grow in the spring. The leaves are either evergreen or deciduous, and simple, lobed, or compound. The shoots typically do not flower or set fruit until the second year of growth (i.e. they are biennial). The rootstock is perennial. Most species are hermaphrodites with male and female parts being present on the same flower. Bramble fruits are aggregate fruits formed from smaller units called drupelets.