ligule
/ˈlɪgjuːl/noun
- Botany a narrow strap-shaped part of a plant, especially a membranous scale on the inner side of the leaf sheath at its junction with the blade in most grasses and sedges【植】舌叶, 舌状体, 叶舌, 舌片。
词源
early 19th cent.: from Latin ligula 'strap'.