The Latin name ‘Asteraceae’ is derived from the type genus Aster, which is a Greek term that means “star”. ‘Compositae’, an older but still valid name, means composite and refers to the characteristic inflorescence, a special type of pseudanthium found in only a few other angiosperm families. The study of this family is known as synantherology.
The vernacular name daisy, widely applied to members of this family, is derived from its Old English meaning, dægesege, from dæges eage meaning “day’s eye,” and this was because the petals (of Bellis perennis) open at dawn and close at dusk.
My take on a few “daisies”