Xanthisma gracilis is an annual and found all over the southwest and into Mexico as well. Duh. A common name is slender goldenweed or...
I am not that great at identifying native grasses, but I keep on trying . Thank goodness some are really quite easy to ID...
I pursued the Mexican stoneroller ( Campostoma ornatum) for a few minutes trying to get a photo or two before deciding to quit harassing...