ligule


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

ligule

a small, scale-like outgrowth from a leaf, found in club mosses and some grasses.
References in periodicals archive ?
12 cm, apex obtuse, clavate, slightly separated only along the neck during anthesis, outer surface densely laciniate, the laciniae to 2 mm long, membranous, patent or pointing backwards, the entire outer surface (including the laciniae) puberulous, the proximal half bright red, the distal half yellow, the inner surface finely puberulous and with a narrowly triangular ligule to 4 mm long at the base of each petal; androecium formed by two alternating series of long and short stamens halfway attached to the petals, anthers oblong, tetralocular, 2-2.
5 cm, base straight, linear, conduplicate or flat, glabrous on both surfaces or scabrous-pubescent on adaxial surface, apex acute or subobtuse; ligule 1-1.
petiolare of a white coloration on the apical side of buds (young flower); anthesis of at least one disc floret (mature flower); senescence of florets in anthesis together with beginning of abscission of ligules (young fruit); and overall abscission of ligules and dryness of fruits (mature fruit).
A ligule pit is present at the base of the adaxial surface of the leaves and can often be seen as a narrow ridge extending downwards from the top corner of the leaf cushions.
The individual genera are diagnosed by a combination of several characters (Table 2), the most notable being the presence of a gynophore and ligule in Ficinia (including Desmoschoenus), presence of two or three scales in the lower florets in Hellmuthia, and perennial growth form and spiral glume arrangement in Scirpoides, whereas Isolepis includes predominantly annual species with a spiral glume arrangement.
Other important structures used for identification purposes, such as the ligule (Figures 4 and 5), collar (Figures 6 and 7), and auricles (Figures 8 and 9), are found at the collar area where the leaf sheath and blade join (Figures 10 to 13).
Identify the blade, ligule, sheath, crown, root, rhizome, and stolon, if present.
The morphometric variables used were plant height from ground level to the uppermost visible ligule, stalk diameter at the base of the plant, and maximum apical ear diameter at [R.
He likes to use precise, sometimes scientific, terms like virga, ligule, and frazil, and to intermingle them with formal literary terms.
Morphological measurements included vegetative shoot height (distance to the ligule of the uppermost leaf), leaf blade length and maximum width and leaf blade angle from vertical on the most recent, fully expanded leaf of each tiller.