The term ARUM is a genus of flowering plants in the family Araceae. It includes four species: LILY (LILY), TARO (TARO), AROID (AROID), and CALLA (CALLA). All four species are characterized by their large, showy flowers and are popularly used in gardens and landscaping. The LILY is a bulbous perennial with white or pink flowers, while the TARO is a tuberous perennial with large, heart-shaped leaves and white or purple flowers. The AROID is a herbaceous perennial with large, arrow-shaped leaves and white or yellow flowers, and the CALLA is a rhizomatous perennial with white or yellow flowers. All four species are native to tropical and subtropical regions and are widely cultivated for their ornamental value.