Lithophragma genus --- Saxifrage family

bulbous woodland-star (Lithophragma glabrum) -- in June -- Cherokee Park Road, CO             white & cream     

smallflower woodland-star (Lithophragma parviflorum var. parviflorum) -- in June -- Steens Mountain WA, OR     white & cream ​

slender woodland-star (Lithophragma tenellum) -- in May -- Black Canyon of the Gunnison National Park, CO     ​ white & cream