Rubus dumnoniensis

Rubus dumnoniensis is a European bramble (blackberry) microspecies of the Rubus fruticosus aggregate, named for Dumnonia (Devon) in south-west Britain. Like other brambles it is a scrambling, woody, biennial-caned shrub, the arching stems (canes) armed with stout, hooked prickles and rooting where the tips touch the ground. The leaves are palmately compound, usually with three to five toothed leaflets that are green above and paler, often felted, beneath. The five-petalled flowers are white to pink, borne in branched clusters, and are followed by aggregate fruits ripening from green through red to glossy black. It grows in hedgerows, woodland margins, scrub and rough ground in Britain and western Europe, spreading vigorously by tip-rooting and forming dense thickets.