Vicia cracca

Vicia cracca (tufted vetch, cow vetch, bird vetch, blue vetch, boreal vetch), is a species of flowering plant in the pea and bean family Fabaceae. It is native to Europe and Asia. It occurs on other continents as an introduced species, including North America, where it is a common weed. It often occurs in disturbed habitats, including old fields and roadside ditches....read more on Wikipedia.