broadleaf wild leek plant Allium ampeloprasum is a member of the onion genus Allium. The wild plant is commonly known as wild leek or broadleaf wild leek. Its native range is southern Europe to western Asia, but it is cultivated in many other places and has become naturalized in many countries. Allium ampeloprasum var. atroviolaceum Allium ampeloprasum var. atroviolaceum (Boiss.) Regel broadleaf wild leek Allium ampeloprasum