Veronica filiformis is a species of flowering plant in the family Plantaginaceae. It is known by many common names, including slender speedwell, creeping speedwell, threadstalk speedwell and Whetzel weed. It is native to eastern Europe and western Asia, and it is known in many other regions as an introduced species.
V. filiformis is a rhizomatous perennial herb producing mats of hairy stems that readily root at nodes that touch substrate. It is self-sterile and rarely seeds, being spread by stolons. ...