ligule


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ligule

[′lig·yül]
(botany)
A small outgrowth in the axis of the leaves in Selaginellales.
A thin outgrowth of a foliage leaf or leaf sheath.
(invertebrate zoology)
A small lobe on the parapodium of certain polychaetes.
References in periodicals archive ?
He also concluded that despite some variability, ligule shape may be independent of other morphological features and/or environmental influences and that it may be used to distinguish species.
The basic organization of the ligules of Selaginella and Isoetes is same, however the ligule of Selaginella is much simpler than that of Isoetes and lack elaborate glassopodium.
The present study was designed to increase our knowledge of ligule structure in Selaginella.
single leaf with single ligule, single tip and single base.
Though the shape (outline) of the ligule is constant within species, minor morphological variation has been recorded among the ligules of the same specimen.
The ligule shape of different species of Selaginella is characteristic and likely to be helpful in taxonomic delineation.
Normally each ventral and dorsal leaf is provided with one tip, one base and one ligule (Fig.
No specific function of the ligule is known but a number of hypotheses have been proposed to elucidate the function of ligules in Selaginella.
On the occurrence of a double ligule in Selaginella martensii.
Association of mucilage with the ligule of several species of Selaginella.
The ultrastracture of the Secreting ligule of Selaginella krsussiana.
The first of these characters, membranous ligules without ciliate margins, is rare among Arundinoids (occurring only in Arundo L.