Windmill grass

Windmill Grass is an erect, short, tufted, hairless, annual to perennial grass with stems that turn upward with a windmill like seed head with 6-9 spokes with many tiny spikelets. The spikelets each have 2 or 3 florets and the outer segment of each floret (lemma) has a straight bristle (awn). It grows to 50 cm high and flowers at various times in various areas.
Callus short, obtuse or rarely acute, not exceeding 2 mm and usually much less.
Spikelets with 1 or rarely 2 upper florets sterile or female.
Fertile lemma broad at the apex, very obtuse or truncate, divaricate at maturity, awned.
Awn conspicuous and much longer than the lemma