Alleghany blackberry Rosaceae Rubus allegheniensis

Leaf:Alternate, palmately compound, 3 to 5 inches long and wide, 3 to 7 leaflets (mostly 5), ovate to oval leaflets, serrated margins, prickles on petiole, dark green above and much paler below.
Flower:Species is monoecious; showy white flowers (one inch across) with 5 petals, larger and persisting longer than black raspberry.
Fruit:Juicy, black multiple of drupes, up to 1 inch long, ripens in late summer. When picked, the fruit does not separate from its core.
Twig:Stout, strongly angled canes with large hooked prickles, dull reddish brown, lacking glaucous bloom. Cane tips do not root.
Bark:Similar to twig but darkens with age.
Form:Sprawling, arching canes that form dense thickets, often well over head-high, particularly when supported.

leaf flower fruit twig bark form map