ligule

/L IH1 G Y AH0 L/
noun
  1. 1

    A strap-shaped structure.

  2. 2

    A portion of a leaf found at the base of the petiole, when present.

  3. 3

    In many grasses (Poaceae) and some sedges (Cyperaceae), the membranous appendage or ring of hairs projecting from the inner side of a leaf at the junction between the blade and the sheath.

Source: https://en.wiktionary.org/wiki/ligule