Alleghany blackberry Rosaceae Rubus allegheniensis Porter Listen to the Latin symbol: RUAL Other Fact Sheets
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.

Looks like: prickly Florida blackberry - dewberry - black raspberry - multiflora rose
leaf flower fruit twig bark form1 map
Additional Range Information:
Rubus allegheniensis is native to North America.
Range may be expanded by planting.
See states reporting Alleghany blackberry.
More: Fall Color
External Links:
USDA Plants Database
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Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
and John Peterson
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