Gayophytum genus --- Evening-Primrose family

Picture
spreading groundsmoke (Gayophytum diffusum) -- in July -- Cub Lake Trail, Rocky Mountain National Park, CO white & cream  
spreading groundsmoke (Gayophytum diffusum) -- in June -- Steens Mountain Wilderness Area, OR     
Picture
                                                                                   20x magnification
spreading groundsmoke (Gayophytum diffusum ssp. parviflorum) -- in September -- Bellaire Lake, Red Feather Lakes, Larimer Cty, CO
pinyon groundsmoke (Gayophytum ramosissimum) -- in July -- Wild Basin, Rocky Mountain National Park, CO     ​white & cream