Biorepository Data Portal

Similar species: Page is under construction. Please see link below for general information on the genus Rubus.

Flowering: mid May to early July

Habitat and ecology: Very common in old fields and edges of woodlands.

Occurence in the Chicago region: native

Etymology: Rubus is the Latin name for bramble and also means red. Allegheniensis means "from the Allegheny Mountains in the Eastern United States."

Author: The Morton Arboretum

Stems 0.5-2(-3) m, mostly erect or nearly so, the young primocanes often sparsely glandular; primocane lvs softly pubescent beneath; terminal lfl typically ovate-oblong, varying to ovate, 1-2 dm, widest near or below the middle, long-acuminate, finely and sharply serrate, rounded to truncate or subcordate at base; lateral lfls usually 4, smaller; armature of the stem of nearly straight prickles spreading at right angles or barely reflexed, much flattened at the long base; prickles of the petioles, pedicels, and midveins similar but prominently hooked; infl racemiform, commonly elongate and many-fld, the lower 1 or 2(3) fls subtended by lvs, the others by stipules only; pedicels tomentose and glandular; fls 2 cm wide; sep acute to more commonly short-caudate; pet cuneate and separate at base. Our commonest tall blackberry, occurring in a wide variety of mostly disturbed habitats, from N.S. and Que. to Minn., s. almost throughout our range and along the mts. to N.C. and Tenn. May-July. (R. abbrevians; R. alumnus; R. attractus; R. concameratus; R. flavinanus; R. frondisentis; R. inclinis; R. nuperus; R. ortivus; R. paulus; R. perinvisus; R. pugnax; R. reravus; R. saltuensis)

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

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