A ligule (from Latin: ligula "strap", variant of lingula, from lingua "tongue") is a thin outgrowth at the junction of leaf and leafstalk of many grasses (family Poaceae) and sedges (family Cyperaceae). A ligule is also a strap-shaped extension of the corolla, such as that of a ray floret in plants in the daisy family Asteraceae. [1

2022年8月24日 · Ligules are classified, predominantly, on their position and morphology, which are still without a consensus as to their nature and diversity in an evolutionary context in Poaceae.

ligule，英语单词，主要用作名词，作名词时译为“ [植] 舌叶；舌状，舌状片；小舌”。

叶舌 （英語： Ligule）是指在许多 禾本科 、少数 莎草科 及极少数 灯芯草科 植物，叶身与 叶鞘 连接处的内侧着生的薄舌状、紧包在茎部的生长物。 叶舌可能的功能是防止昆虫或其他物质侵入叶鞘。 叶舌有许多形式，最常见的是状似半透明膜或纤毛状流苏；膜状叶舌可以短至1 - 2毫米（如 草地早熟禾），也可长至10 -20毫米（如 石茅），也可能具光滑或粗糙边缘。

Ligules are tiny appendages on the upper (adaxial) side of the leaf (both vegetative and reproductive), near the leaf base (Figures 4.16, 4.18D,H, 4.19D). The function of ligules is not clear; one proposal is that they act as glands, providing hydration for …

2023年6月1日 · Ligule and contraligule are important structures in the taxonomy of several genera in Cyperaceae, notably Carex, Schoenus and Scleria. Numerically, 70.83% of the tribes and 44.21% of the genera have at least one species with ligule, which shows the comprehensiveness of this structure in the family.

2025年3月24日 · 1 A membranous scalelike outgrowth from the leaves of certain flowering plants. Many grasses have a ligule at the base of the leaf blade. 2 A small membranous structure that develops on the upper surface of a young leaf base in certain clubmosses, for example Selaginella. It withers as the plant matures.

Of the three component organs of the grass leaf – blade, sheath and ligule – the ligule is the least studied and the least understood. Traditionally, it has been assumed to act in a passive way in protecting the culm and leaves that

The term ligule means “small tongue” (Palisot de Beauvois, 1812), a structure that is present at the base of the leaf in several plant groups such as lycophytes ( Selaginella and Isoetes ) and many monocotyledons.

…a leaf; this is the ligule, a peculiar tonguelike outgrowth from the leaf surface near the leaf base. Leaves of Lycopodium and Selaginella can be differentiated on this basis. The ligule, which appears very early in the development of a leaf, is a surprisingly complex structure at maturity.