Capsella bursa-pastoris

Capsella bursa-pastoris, known by its common name shepherd's purse because of its triangular flat fruits, which are purse-like, is a small (up to 0.5 m) annual and ruderal flowering plant in the mustard family Brassicaceae. It is native to eastern Europe and Asia minor, but is naturalized and considered a common weed in many parts of the world, especially in colder climates, including British Isles, where it is regarded as an archaeophyte, North America and China, but...