Raspberry, a spiny shrub that is widely grown for its flavorful fruits. The many cultivated varieties yield red, black, purple, and yellow fruits. All derive from the European red, the American red, and the black raspberry of eastern North America. Purple varieties are crosses between red and black varieties.
A raspberry is not a berry but an aggregate fruit, consisting of a cap (cluster) of tiny stone fruits. (A stone fruit contains a single seed, or stone; a berry contains a number of seeds.) The ripe cap of the raspberry, unlike that of its relative the blackberry, separates from the receptacle on which it grows.
Red raspberries are grown from suckers, shoots that rise from the roots. Black raspberries are propagated by bending the tips of the canes (stems) to earth and covering them with soil. The tips take root and are transplanted the following year. Raspberry canes bear fruit only in their second year, and are then pruned.
Raspberries belong to the genus Rubus of the rose family, Rosaceae. The European red is R. idaeus; American red, R. strigosus; black, R. occidentalis.The raspberry is not a berry but an aggregate fruit, consisting of a cluster of tiny stone fruits.