Colutea arborescens is a species of flowering shrub commonly known as the bladder senna, bladder-pod, or bladder nut. This plant belongs to the Fabaceae family and is mainly native to southeast Europe and western Asia. Apart from its scientific name, numerous synonyms are used to refer to this plant, including Colutea rotundifolia, Colutea xmedia, Colutea arborea, and Colutea elata. The bladder senna is widely cultivated for ornamental purposes due to its attractive yellow flowers and unusual bladder-like fruits. The plant also has medicinal properties with its younger parts being used in traditional medicine to treat skin irritations, wounds, and digestive issues.