Vicia tetrasperma (syn. Ervum tetraspermum)Clive Stace, New Flora of the British Isles, 4th edition 2019, p 171 the smooth tare, smooth vetch, lentil vetch or sparrow vetch, is a species of flowering plant in the bean family Fabaceae.
Description Vicia tetrasperma is an annual plant growing up to tall. The leaflets are and are in four to six pairs, the leaf ending with a simple tendril. The pale blue flowers are in racemes of one or two flowers, each about long. Four seeds are produced in a pod long.Clapham, A.R., Tutin, T.G. and Warburg, E.F. 1968. Excursion Flora of the British Isles. Cambridge University Press. The pod is dehiscent.
Distribution This vetch is native to Europe, Asia, and North Africa, and it can be found on other continents as an introduced species. It can be invasive.
Habitat Grassy places, local.
References
External links
Jepson Manual Treatment USDA Plants Profile
Washington Burke Museum Missouri Plants Photo Profile AgroAtlas Economic Plants Photo gallery