bromus diandrus

Bromus diandrus is a species of grass known by the common names great brome and 'ripgut brome'.

This is a brome grass which is native to the Mediterranean but has been introduced to much of the rest of the world. It does best in areas with a Mediterranean climate, such as California and parts of southern Australia, but it is quite tolerant of many climates.

Ripgut brome is a winter annual which grows throughout winter and spring and matures in the summer.

The adult plant is one to three feet in height ...