Daisy flower daisy , any of several species of flowering plants belonging to the aster family ( Asteraceae ). The name daisy commonly denotes the oxeye daisy ( Leucanthemum vulgare ), the Shasta daisy ( L. × superbum ), and the English, or true, daisy ( Bellis perennis ). These and other plants called daisies are distinguished by a composite flower head composed of 15 to 30 white ray flowers surrounding a centre consisting of bright yellow disk flowers, though other colour combinations are common.