Rubus constrictus

Rubus constrictus is one of the many apomictic microspecies belonging to the European bramble or blackberry aggregate (Rubus fruticosus L. agg., Rosaceae). Like other members of the aggregate it is a scrambling, woody perennial forming dense thickets of arching, biennial canes armed with stout, often curved prickles. The palmately or pedately compound leaves bear three to five toothed, often paler-undersided leaflets. Five-petalled white to pale-pink flowers are carried in terminal panicles in summer, followed by aggregate fruits that ripen from green through red to glossy black, each composed of many juicy drupelets. A plant of hedgerows, woodland margins, scrub, and disturbed waste ground, the microspecies is part of the native European bramble flora, reproducing largely by apomixis, which fixes its distinctive characters.