awn

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awn

any of the bristles growing from the spikelets of certain grasses, including cereals

awn

[ȯn]
(botany)
Any of the bristles at the ends of glumes or bracts on the spikelets of oats, barley, and some wheat and grasses. Also known as beard.
References in periodicals archive ?
When developed, slightly longer than the sessile one, (4-)4,5(-6) mm long, male, lanceolate, awnless, deep brown and in 45 degrees angle with respect to racemes.
42 AC Cadillac Awnless 0 AC Cora Awnless 0 AC Domain Awnless 1.
At anthesis, the apiculus is red whereas at maturity, the spikelet and apiculus are straw-colored and awnless.
At maturity, the spikelet and apiculus are tawny-colored and awnless.
1 awnless plant:2 plants with one awn per spikelet:1 plant with two or more awns per spikelet) (O'Mara, 1961).
The line has tan plant color (ppqq), light brown glume color, and is awnless (AA).
The lemma is midwide, short, glabrous, pointed and awnless, and may overlap slightly on the palea.
Whitmar is an awnless cultivar developed from a population collected near Colton, Whitman County, WA, and Goldar is an awned cultivar developed from a population collected near Anatone, Asotin County, WA.