Rubus warrenii

Rubus warrenii, Warren's bramble, is a microspecies of the Rubus fruticosus aggregate in the family Rosaceae, recognised among the brambles of the British Isles. It is a scrambling perennial shrub with long, arching, prickly biennial canes that arch over and root at their tips, forming dense thickets. The leaves are palmately compound, usually with three to five coarsely toothed leaflets, green above and paler beneath. White to pale pink five-petalled flowers are produced in branched panicles through the summer, followed by aggregate fruits of many small drupelets that ripen from green and red to glossy black. Like other members of the aggregate it is apomictic, reproducing without sexual fertilisation and so maintaining a stable, geographically restricted form. It grows in hedgerows, woodland edges, heaths, and rough ground in Britain and temperate Europe.