DEWBERRY, Rubus caesius, a trailing plant, allied to the bramble, of the family Rosaceae. It is common in woods, hedges and the borders of fields in England and other countries of Europe. The leaves have three leaflets, are hairy beneath, and of a dusky green; the flowers which appear in June and July are white, or pale rose-coloured. The fruit is large, and closely em braced by the calyx, and consists of a few drupules, which are black, with a glaucous bloom ; it has an agreeable acid taste. In the eastern and southern United States several trailing native species of Rubus, especially R. flagellaris, R. velox. and R. trivi alis, produce excellent fruits, called dewberries, some varieties of which, as the Lucretia (R. flagellaris, var. roribaccus), are exten sively cultivated. In the Pacific States various forms of the native R. ursinus, R. viti f olius and R. macropetalus are cultivated as dewberries, as the Auginbaugh, Humbolt and Skagit Chief.