Glume
In botany, a glume is a bract below a spikelet in the inflorescence of grasses or the flowers of sedges. There are two other types of bracts in the spikelets of grasses: the lemma and palea.
In grasses, two bracts known as "glumes" form the lowermost organs of a spikelet. Glumes may be similar in form to the lemmas, the bracts at the base of each floret.
In sedges, by contrast, a glume is a scale at the base of each flower in a spikelet.
