Absinth Wormwood

NDSU Extension Service
www.ag.ndsu.nodak.edu/invasiveweeds/absinth.htm#f

Natural Resources Conservation Service, USDA
http://plants.usda.gov/java/profile?symbol=ARAB3

North Dakota Department of Agriculture
www.agdepartment.com/programs/plant/noxiousweeds.html

Southwest Colorado Wildflowers
www.swcoloradowildflowers.com/noxious%20weeds.htm