Rubus allegheniensis (highbush blackberry)

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Notes

Key Characteristics

  • Ascending, high-arching shrub up to 1-2 meters tall
  • Usually with stright prickles, brownish purple, the lower stem rounded in cross section, the upper stem angled
  • Leaves alternate, palmately compound, leaflets 3-7, usually 5 (5-7 if palmate), irregularly coarsely serrate to doubly serrate, with prickles on the midrib
  • Petioles and petiolules densely pubescent, glandular hispid, with stout prickles, and stipules at the base
  • Twigs green to tan, glabrous, becoming angled or ridged in cross section
  • No cast on the stem
  • Fruit an aggregate of drupes on a receptacle which remains attached
  • Does not appear in wet sites

Sourced from "Michigan Shrubs"

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Pictures

Many come from Steve Baskauf at Vanderbilt University

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