Corn speedwell – Veronica arvensis
Veronica arvensis L.
Scrophulariaceae (Figwort family)
MI Status
Non-native
Life cycle
Prostrate, spreading winter annual.
Leaves
Lower and middle leaves are opposite, broadly egg-shaped, hairy, and short-stalked with rounded teeth along the margins. Small, narrow, bract-like upper leaves are alternate and without petioles.
Stems
Prostrate and mat-forming, with many branches that spread from the base.
Flowers and fruit
Light blue to violet, inconspicuous flowers are formed in the axils of the upper bract-like leaves on elongated flowering stems. Fruits are hairy, roundly heart-shaped capsules that contain many tiny, yellowish seeds.
Reproduction
Seeds.
Similar weeds
Purslane speedwell (Veronica peregrina L.)
Differs by having a more erect habit; hairless, oblong to linear leaves with smooth to slightly toothed margins; and tiny white flowers.
Slender speedwell
(Veronica filiformis Sm.)
Differs by having a perennial nature with stems that root at the nodes, round to kidney-shaped leaves, and bluish white flowers on slender flower stalks.