European dewberry - Rubus caesius

"Rubus caesius" is a Eurasian species of dewberr. Like other dewberries, it is a species of flowering plant in the rose family, related to the blackberry. It is widely distributed across much of Europe and Asia from Ireland and Portugal as far east as Xinjiang Province in western China. It has also become sparingly naturalized in scattered locations in Argentina, Canada, and the United States.