Summary[
edit] Description: English: Rubus allegheniensis Porter - Allegheny blackberry - United States, MA, Middlesex Co., Woburn, Horn Pond Mountain. June 8, 2008. Date: 8 June 2011. Source: Doug Goldman @ USDA-NRCS PLANTS Database / USDA-NRCS-NPDT
http://plants.usda.gov/core/profile?symbol=RUAL. Author: Doug Goldman. USDA-NRCS-NPDT United States, NY, Tompkins Co., Dryden.