Veronica serpyllifolia (thyme-leaved speedwell<ref name=BSBI07>Template:Cite web</ref> or thymeleaf speedwell) is a perennial flowering plant in the plantain family. It can be found on most continents.
The leaves are oval, borne on creeping stems. Roots grow from leaf axils. The prostrate stems bear erect flowering branches up to 20 cm high. The leaves are opposite on short stalks. The flowers are in racemes with a corolla 6 mm across and pale blue in colour.<ref>Parnell, J. and Curtis, T. 2012. Webb's An Irish Flora. Cork University Press. Template:ISBN</ref>