👉 Scymena is a genus of flowering plants in the family Apiaceae, native to Asia, Europe, and North America. They are known for their large, round leaves that can grow up to 70 cm long, with each leaf forming a small, petal-like structure called a scythe or petiole. Scymena flowers are typically solitary and contain one or more petals, which are arranged in a symmetrical pattern around the central scythe.