abstract:Veronica arvensis (Corn Speedwell, Common Speedwell, Speedwell, Rock Speedwell, Wall Speedwell Veronica arvensis at USDA PLANTS Database) is a medicinal plant Veronica arvensis at Plants For A Future and noxious weed native to Africa, Asia and Europe.Veronica arvensis at Germplasm Resources Information Network - (GRIN) A member of the plantain family, it is a hairy, erect to almost recumbent, annual herb, 9 to 40 cm high from a taproot.