the unit of a grass inflorescence, typically consisting of two bracts (glumes) surrounding one or more florets, each of which is itself surrounded by two bracts
lemma1, palea
2.
the small inflorescence of plants of other families, esp the sedges
spikelet in American English
(ˈspaɪklɪt)
noun
a small spike; esp., an individual unit of a flower cluster of a grass