Definition of Arrhenatherum
: a genus of Eurasian grasses that have 2-flowered spikelets, the first floret staminate and awned from the back and are naturalized in cooler parts of North America — see tall oat grass
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Origin and Etymology of arrhenatherum
New Latin, from Greek arrhen-, arrhēn male + ather-, athēr awn; from the awned staminate lemma; akin to Sanskrit arṣati it flows, ṛṣabha bull, Latin ros dew
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