Envoy
Poison Sumac Drawing (Toxicodendron vernix) {{PD}} Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 2: 483. From NRCS Plants Database: http://plants.usda.gov/cgi_bin/topics.cgi?earl=plant_profile.cgi&symbol=TO
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