In botanical terminology, a phyllary, also known an involucral bract or tegule, is a single bract of the involucre of a composite flower. The involucre is the grouping of bracts together. Phyllaries a
Balsamorhiza hookeri phyllaries are widely separated, hairy, stiff, and point away from the stem.
The aster phyllaries (left) are short, curl away from the plant, and are in several layers. The daisy phyllaries (right) are long, hairy, and clasp the base of the flower head.