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Glume

One of two bracts enclosing a flower spikelet in grasses

One of two bracts enclosing a flower spikelet in grasses

In botany, a glume is a bract (leaf-like structure) below a spikelet in the inflorescence (flower cluster) of grasses (Poaceae) or the flowers of sedges (Cyperaceae). 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 (there are usually two but one is sometimes reduced; or rarely, both are absent). 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.

References

References

  1. Stace, C. A.. (2010). "New Flora of the British Isles". Cambridge University Press.
  2. (2007). "Sedges of the British Isles". Botanical Society of Britain and Ireland.
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