Also found in: Thesaurus, Medical, Financial, Encyclopedia, Wikipedia.


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.

[Latin ligula, diminutive of lingua, tongue; see dn̥ghū- in Indo-European roots.]


(ˈlɪɡjuːl) or


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]


(ˈlɪg yul)

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]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ligule - (botany) any appendage to a plant that is shaped like a strapligule - (botany) any appendage to a plant that is shaped like a strap
phytology, botany - the branch of biology that studies plants
plant part, plant structure - any part of a plant or fungus
References in periodicals archive ?
Size of ligule has a direct effect on number of floral visitors arriving to floral capitula of this species (Figueroa-Castro, 2001).
Ligule pit apertures are clearly visible on Bothrodendron stems, thereby distinguishing them from the superficially similar stems Cyclostigma and Pinakodendron, in which they are never seen.
Leaves generally have well-developed blades, but are reduced to lobes in some species; there also may be a ligule.
Ligule of distal-most cauline leaf, length (mm): [less than or equal to]2.
The ligule morphology in three Indian species of the genus Selaginella, e.
c) Ligulate (5+0 ligule lobes): zygomorphic, with a short and narrow tube expanding into a ligule five-lobed at the apex, the lobes deeply (Fig.
As diagnostic morphological characters we examined the number of corm lobes, the number of leaves, leaf length and width, the number of peripheral fiber strands, presence or absence of stomata and velum, shape of labium and ligule, and sporangium length and width (Table 1).
Another relevant characteristic for the cited classification was the presence of a coleoptile (also called ligule or ocrea), which was used to divide palms with remote germination into ligulate and nonligulate seedlings.
Ligule large, massive, distinctly auriculate; cushion dark, persistent, triangular, ca 2 mm long, 1.
Ligule lanceolate with pronounced basal lobes, to 2.
This renewed interest in the genus has stimulated investigation into other morphological features, including leaf anatomy (presence or absence of fibers; intrastelar canals), variation in ligule and labium characters (R.