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).

The meaning of LIGULE is a scalelike projection especially on a plant.

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.

…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.

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 …

2024年9月5日 · A ligule is a thin outgrowth at the junction of the leaf and leafstalk in many grasses (family Poaceae) and sedges (family Cyperaceae). It is also a strap-shaped extension of the corolla, similar to that of a ray floret in plants in the daisy family.

2018年5月29日 · ligule 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. 3.

Ligule - Thin, collarlike appendage on the inside of the blade at the junction with the sheath in grasses; the strap-shaped part of a ray corolla in Asteraceae. Limb - The expanded flat part of an organ. Linear - Long and narrow, of uniform width, as the leaf blades of grasses.

Natural shedding of an organ that is mature or aged, as of a ripe fruit or an old leaf. [4] Specialized layer of tissue that allows an organ to be shed by abscission when it is ripe or senescent. Such tissue is commonly formed, for example, at the base of a petiole or pedicel.

2024年8月9日 · ligule (plural ligules) A strap-shaped structure. A portion of a leaf found at the base of the petiole, when present. 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.