Bromus briziformis

Bromus briziformis is a species of brome grass known by the common name rattlesnake brome.

It is native to Eurasia and it can be found in North America as an introduced species. It is an annual grass growing up to 70 centimeters tall. The inflorescence is an open arrangement of nodding, flat spikelets. Each spikelet is composed of rounded fruits which are layered and resemble the rattle of a rattlesnake. The Latin name of the grass comes from its resemblance to grasses of the genus Briza, particularly Briza maxima.