Scientific name:
Rubus discolor General: Erect to sprawling; stout stems erect, then arching, then trailing along the ground (to 10 m long) and rooting at the ends, often distinctly four-angled, armed with stout, recurved prickles; often forming dense, impenetrable thickets.
Leaves: Alternate, more or less evergreen (some deciduous), trifoliate (on floral shoots) to 5-foliate (on vegetative shoots), 12-25 cm wide; leaflets toothed, oval, smooth-green above, covered with white hairs below.
Flowers: White to pinkish, 2-3 cm across, 5 petals; many stamens; in clusters of 5-20.
Fruits: Blackberries 1-1.5 cm thick; edible.
Ecology: An Asian species introduced from India via England and widely naturalized, in disturbed sites and streamside areas, at low elevations.