common buckthorn, European buckthorn
Etymology: Rhamnus: ancient Greek name for the buckthorn
Plants: erect, perennial, to 20' tall tree, dark bark marked with lenticels
Leaves: dull green, toothed edges
Fruits: blue-black berry
Hazardous: Careful, this plant is hazardous!
Invasiveness: Restricted Invasive - Eradicate!
Conservation Status: Introduced - naturalized; ecologically invasive
Floristic Rating: Wetland Indicator = FACU WIS DNR-Bureau of Endangered Resources: Detailed information on Wisconsin invasive species including decription, habitats, control methods Invasive And Exotic Species of North America: Descriptions, management issues, warnings, photos, etc. USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Invasive Plants: Photos, descriptions, information University of Wisconsin - Green Bay: Shrubs: Photos, descriptions, information University of Wisconsin - Green Bay: Trees: Photos, descriptions, information USGS - Northern Prairie Wildlife Research Center: Wetland Plants and Plant Communities of Minnesota and Wisconsin USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Virginia Tech Dept. of Forestry, College of Natural Resources: detailed description and photographs Weeds Gone Wild: Alien Plant Invaders of Natural Areas: Descriptions, photos, management help, etc. Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"