Bouteloua aristidoides

A low-growing annual grama, common in towns & mountain foothills.

Dried mature spikelets at Aguirre Springs on the east side of the Organ Mts., 10/1/05. The spikelets remain closed until they dry, at which time they spread open like this.

Inflorescences in Las Cruces, 9/30/05. Note spikelets still closed on this plant...