Dewberrries are a group of species closely related to the blackberry, in genus Rubus and family Rosaceae. They can be found growing throughout most of the Northern Hemisphere. Dewberries are brambles with berries that look like raspberries, but are usually purple to black instead of red.
Dewberry plant bears white flowers in early March to April, which develop into small green berries. The berry is initially green, growing to red then ripen to a deep purple-blue. When dewberries are ripe, they are tender and difficult to pick without squashing them. The plants do not have upright canes but trailing stems along the ground. The stems are covered with fine spines and stickers, which make picking process even more difficult, but for many, the sweet berries are worth the scratches and stains that come from picking them. Dewberry is sweet and edible, and can be eaten raw, or use to make jam.
Dewberries http://commons.wikimedia.org/wiki/File:Dewberry_fruits_2009_G1.jpg George Chernilevsky