Elymus californicus is a species of wild rye known by the common name California bottlebrush grass.

[1] This grass is endemic to California where it is an uncommon species known from a few counties in the San Francisco Bay Area.

The tall, erect stem is nearly naked, bearing the occasional sheathing leaf with a blade 10 to 20 centimeters long.

It bears an erect inflorescence which curves as it becomes heavier in grain.

This Pooideae article is a stub.