Genus
Barbarea (Wintercresses)
Barbarea orthoceras. Photo: (c) Bobby Valentine, some rights reserved (CC BY-NC)
Barbarea (winter cress or yellow rocket) is a genus of about 22 species of flowering plants in the family Brassicaceae, native to temperate regions of the Northern Hemisphere, with the highest species diversity in southern Europe and southwest Asia. They are small herbaceous biennial or perennial plants with dark green, deeply lobed leaves and yellow flowers with four petals.
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