melampodium genus --- aster subfamily 2.2 

plains blackfoot (Melampodium leucanthum) -- in April & September -- Villanueva State Park, NM         white & cream    

plains blackfoot (Melampodium leucanthum) -- in April -- Big Bend National Park, TX   white & cream     

plains blackfoot (Melampodium leucanthum) -- in May -- Picketwire Canyon, Comanche National Grassland, CO   ​ white & cream

plains blackfoot (Melampodium leucanthum) -- in April -- Dripping Springs Natural Area, NM       ​ white & cream