The ligule is part of the leaf that is found at the junction of the blade and sheath of the leaf. It may take several forms, but it is commonly some form of translucent membrane or a fringe of hairs.

Where we can see ligule in Selaginella?

A small, membranous, tongue-like structure, ligule (latin ligula = a small tongue), is located at the base of each vegetative, leaf and sporophyll (Fig. 7.51). The ligule is found on the ventral (upper) surface of the leaf.

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.