ssp. villosa

Stems moderately to densely pubescent with spreading hairs mostly 1–2 mm long. Leaves with mostly 12–16 leaflets, these mostly 15–30 mm long, 3–6 mm wide, the surfaces moderately to densely pubescent with loosely appressed to spreading hairs. Inflorescences mostly with 20–40(–60) flowers. Calyces with the lobes 0.5–4.0 mm long, the lowermost lobe 2–4 mm long, often nearly hairlike above a short, triangular base, moderately to densely hairy. Corollas usually 14–18 mm long, blue to purple or rarely pink or white. 2n=14, 28. May–July.

Introduced, scattered south of the Missouri River, extending farther north mostly in counties along the Missouri and Mississippi Rivers (native of Europe, Asia; introduced widely in the U.S. [including Alaska], Canada, Mexico, Central America, South America, Africa). Banks of streams and rivers, edges of mesic upland forests, and rarely margins of upland prairies; also levees, fencerows, old fields, margins of crop fields, fallow fields, ditches, railroads, roadsides, and open disturbed areas.