The Raspberry or Red Raspberry, (Rubus idaeus) is a plant that produces a sweet, red composite fruit in late summer or early autumn. In proper botanical language, it is not a berry at all, but instead an aggregate fruit of numerous drupelets around a central core. In raspberry and other species of the subgenus Idaeobatus, the druplets separate from the core when picked, leaving a hollow fruit, whereas in blackberry the druplets stay attached to the core.