Colutea arborescens
 Colutea arborescens is a species of leguminous shrub known by the common name bladder senna. It is native to Europe and North Africa but it is known on other continents where it is grown as an ornamental and used in landscaping for erosion control. It is also known in the wild as an occasionally weedy escapee from cultivation. The shrub takes a rounded form and has many branches covered in deciduous leaves.