Vicia tetrasperma or Ervum tetraspermum (smooth tare, smooth vetch, lentil vetch, sparrow vetch) is a species from the large genus Vicia. It can be invasive.
Vicia tetrasperma is an annual plant growing up to 60 cm (24 in) tall. The leaflets are 10 to 20 mm (0.39 to 0.79 in) 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 4 mm (0.16 in) long. Four seeds are produced in a pod 12 to 15 mm (0.47 to 0.59 in) long. ...
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*All information is based on published scientific research