Trailing Blackberry

''Rubus ursinus'' is a species of blackberry or dewberry known by the common names California blackberry/dewberry, Douglas berry, Pacific blackberry/dewberry and trailing blackberry. It is native to western North America. This is a wide, spreading shrub or vine-bearing bush with prickly branches that can tip layer to spread vegetatively. Its white flowers may be distinguished from those of other blackberries by their narrow petals. The species is dioeocious, with male and female plants. As with.. more