Pulsatilla genus --- buttercup family

white pasqueflower (Pulsatilla occidentalis) -- in June -- Glacier National Park, MT      white & cream  

pasqueflower (Pulsatilla nuttalliana) -- in April -- Lory State Park, CO            blue & purple      

pasqueflower (Pulsatilla nuttalliana) -- in June -- Pingree Park, Roosevelt National Forest, CO

pasqueflower (Pulsatilla nuttalliana) -- in March -- Well Gulch Nature Trail, Lory State Park, CO     ​     blue & purple