ssp. varia (Host) Corb.

V. villosa var. glabrescens W.D.J. Koch

V. dasycarpa Ten.

Stems glabrous or sparsely pubescent with incurved to loosely appressed hairs 0.5–1.0 mm long. Leaves with mostly 12–18(20) leaflets, these mostly 10–25 mm long, 2–4 mm wide, the surfaces glabrous or sparsely appressed-hairy. Inflorescences mostly with 10–25 flowers. Calyces with the lobes 0.5–3.0 mm long, the lowermost lobe 2–3 mm long, narrowly triangular to lanceolate-triangular, glabrous or sparsely hairy. Corollas usually (10–)12–16 mm long, mostly violet or purple. 2n=14, 28. May–July.

Introduced, scattered, mostly south of the Missouri River (native of Europe, Asia; introduced widely in the U.S., also occasionally in south America). 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.