Ovate goatgrass (Aegilops ovata)
Images courtesy California Dept. of Food and Agriculture
Ovate goatgrass (Aegilops ovata)
EDRR Species?: 

Winter annual, flowers May to July. Grows 10 inches tall. Similar to Barbed and Jointed goatgrass, except spikes are ovate-cylindric, and they disperse as units at maturity and do not break apart into joints.

Goatgrasses are rangeland and dryland crop invaders. This species, aside from invading dryland pastures in California, readily crosses with wheat-producing sterile seed and unmarketable wheat.