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 (Poaceae) and sedges. A ligule is also a strap-shaped extension of the corolla, such as that of a ray floret in plants in the daisy family Asteraceae.
What is ligule and significance?
1. a strap-shaped corolla in the flowers of certain composite plants. 2. a thin membrane attached to a leaf of grass at the point where the blade meets the leaf sheath.
What is ligule and auricle?
is that ligule is (botany) 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 while auricle is (botany) any appendage in the shape of an earlobe.
What is a ligule leaf?
Ligule: The membranous appendage arising from the inner surface of the leaf at the junction with the leaf sheath in many grasses and some sedges.* In grasses, the ligule is an important identification characteristic.
Does Lycopodium have a ligule?
lycophytes. …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.
Is ligule present in Lycopodium?
Note: In Lycopodium there is a ligule, a strange tongue-like outcrop from the surface of the leaf at the base of the leaf. Leaves of Lycopodium and Selaginella can be distinguished on this basis. The ligule, which occurs very early in the growth of the leaf, is surprisingly complex at maturity.
What forms can a ligule take?
The ligule is an extra piece of tissue that forms at the growth point. I like to think of it as a “cuticle” that forms as the leaf blade grows. These ligules can be smooth or shaggy, pointed or flat. There are many, many different ways the ligule can take shape.
What is ligule selaginella?
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.
What is Glossopodium?
Definition of glossopodium : the sheathing leaf base in the quillworts.
What is ligule Selaginella?
Where we can see ligule in Selaginella?
The ligule is a leaf like structure which is present on the adaxial side of the leaf.
