Also called green spurge.  Some authors treat Euphorbia esula and Euphorbia virgata as varieties of the same species, others do not.   Regardless, both are part of spurge  genus Euphorbia and spurge  family Euphorbiaceae.

Native to Eurasia.  Invasive > Global Invasive > in USA+Canada Invasive > report it! Invasive > in USA Invasive > in USFS (.pdf) Invasive > in Michigan seeds prohibited in Michigan (.pdf page 2)

For kids!  This plant described in a USDA Forest Service coloring noxious weeds page.

Learn more about leafy spurge Euphorbia esula

Best Control Practices BCP (Michigan) (Euphorbia virgata) (.pdf) Biology and Biological Control (.pdf) Biological Control in Eastern USA (.pdf page 189)

Discover Life Encyclopedia of Life Google Google images Michigan Flora (Euphorbia virgata) USDA PLANTS db USFS Wikipedia