Veronica dillenii

{{Short description|Species of plant in the genus Veronica (plant)}}

{{Speciesbox

|image=Veronica dillenii2.jpg

|image_caption=Close-up of flower

|image2=Veronica dillenii kz01.jpg

|image2_caption=In bloom, Poland

|genus=Veronica

|species=dillenii

|authority=Crantz

}}

Veronica dillenii, commonly known as Dillenius' speedwell,{{ITIS|id=33416|taxon=Veronica dillenii|access-date=27 April 2022}} is a species of flowering plant in the speedwell genus Veronica, family Plantaginaceae. It is found in warmer parts of Europe, the Caucasus region, and on to Kazakhstan, and it has been introduced to the eastern United States; Wisconsin, Illinois, Indiana, Michigan, New York, and Virginia.{{cite web |url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:811928-1 |title=Veronica dillenii Crantz |author= |website=Plants of the World Online |publisher=Board of Trustees of the Royal Botanic Gardens, Kew |access-date=9 October 2021 }} Considered somewhat weedy, it does not persist in fields under intensive agriculture.{{cite journal |title=Organic but Also Low-Input Conventional Farming Systems Support High Biodiversity of Weed Species in Winter Cereals |year=2020 |last1=Berbeć |first1=Adam Kleofas |last2=Staniak |first2=Mariola |last3=Feledyn-Szewczyk |first3=Beata |last4=Kocira |first4=Anna |last5=Stalenga |first5=Jarosław |journal=Agriculture |volume=10 |issue=9 |page=413 |doi=10.3390/agriculture10090413 |doi-access=free }}