noun
or ray floret
1. : one of the flowers with strap-shaped corolla occupying the margin of the head in composite plants that also have disk flowers (as aster, goldenrod, daisy, and sunflower) or making up the entire head when disk flowers are lacking (as in chicory) — see composite illustration
2. : one of the usually larger flowers at the margin of the umbel in some plants of the family Umbelliferae