What does ligule mean?
A ligule is a small, thin appendage found especially at the base of grass leaves, where the blade meets the sheath. It may appear as a smooth membrane, a fringe of hairs, or another tongue-like structure, and its form is useful for describing and identifying grasses. Although the word is uncommon outside botanical and plant-science contexts, it is precise and useful in keys, illustrations, and descriptions of plant anatomy. The term also conveys the appendage’s resemblance to a little tongue. Ligules should not be confused with ligatures, which are ties, bands, or threads used to bind things or close a wound. In everyday speech, a person might simply call the structure a fringe or flap, but ligule is the more accurate botanical word.
nounA ligule is a small, thin, membranous or tongue-like appendage, especially one at the base of a grass leaf where the leaf blade meets the sheath.
- A small membranous or tongue-like appendage at the base of a plant leaf, especially in grasses.
- A thin, strap-like or tongue-shaped projection in botany generally.
"The botanist examined the ligule of the grass to help identify the species."
"The ligule is a short membranous fringe on the grass leaf."
"In botanical illustrations, the ligule can look like a tiny tongue between the leaf blade and sheath."
The standard plural is “ligules”; in botanical descriptions, the plural often follows the possessive construction “the ligules of the leaf.”
"The leaf ligules of the two grasses differ in shape."
A grass ligule is nature’s tiny tongue: the little flap or fringe at the leaf base can help specialists identify grasses.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Words that share this root
Related word forms
How ligule is actually used
This is a specialized botanical term, used mainly in descriptions of leaves and grasses. It is uncommon in general conversation and is often part of detailed plant identification or morphology.
Easily confused with ligule
A ligature is a tie, band, or surgical thread, whereas a ligule is a small appendage at the base of a plant leaf.