Poaceae. Unable to ID this grass

I have tried to identify this grass without success. Hoping that a member is expert on grasses.

 

Bromus?

 

Thanks RonB, I will investigate the Bromus family. These grasses can be so difficult to ID.

 

Also check out the closely related genus Anisantha.

 

Thank you Michael F. I will check Anisantha in the keys. Thanks for your suggestion.

 

Following your suggestions, I have, correctly or incorrectly, settled on Bromus sterilis. Thank you both again.

 

Consider also possibility of Bromus rubens (syn. Bromus madritensis).
Bromus sterilis has drooping branches of the inflorescence, whereas in Bromus rubens, the branches remain ascending. You need to find an older plant with open panicle to tell the difference.
Bromus rigidus has also more ascending branches and longer spikelets than Bromus sterilis.