perityle genus --- aster subfamily 2.2  

Emory's rockdaisy (Perityle emoryi) -- in March -- Corn Springs Road, Chuckwalla Mountains, BLM, southern California    white & cream   

Emory's rockdaisy (Perityle emoryi) -- in March -- Organ Pipe Cactus National Monument, AZ        ​white & cream