Agrostis setacea Sibth.

Agrostis curtisii, the bristle bent, is a species of grass in the family Poaceae native to Eurasia.

It is densely tufted, with hair like leaves and stems that grow up to 60 cm.

Its spikelets are yellow-green in colour, and its lemmas are awned.

Bristle bent flowers in the UK from June until July and is found typically on dry heaths and moors.