👉 Allancastria is a genus of flowering plants in the family Asteraceae, commonly known as alliums or onions. These plants are native to Europe and Asia, and they are closely related to other species of onion, including the common onion (Allium cepa) and the purple onion (Allium sativum). Allancastria is characterized by its long, slender leaves that are often arranged in a clump or a cluster. The flowers are typically yellowish-white with
