Unidentified grass #21 as seen on gravel slopes at the base of cliffs at Domingo Pass, Pueblo Mountains of southeastern Oregon.........May 31, 2012. This species is tufted rather than rhizomatous.

Close-up of a spikelet of unidentified grass #21 as seen on gravel slopes at the base of cliffs at Domingo Pass, Pueblo Mountains of southeastern Oregon........May 31, 2012. Note the lack of a tuft of crinkly hairs at the base of the lemma.