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A straplike structure, such as the long flattened lobe of the corolla of a ray flower or a membranous or hairy appendage between the sheath and blade of a grass leaf.
1. (Botany) a membranous outgrowth at the junction between the leaf blade and sheath in many grasses and sedges
2. (Botany) a strap-shaped corolla, such as that of a ray floret in the daisy
[C19: via French, from Latin ligula strap, variant of lingula, from lingua tongue]
1. a thin, membranous outgrowth from the base of the blade of most grasses.
2. a strap-shaped corolla, as in the ray flowers of certain composite plants.
[1595–1605; < Latin ligula]