Saxifraga genus --- saxifrage family 

spotted saxifrage (Saxifraga austromontana) -- in July -- Cub Lake Trail, RMNP, CO   white & cream   

spotted saxifrage (Saxifraga austromontana) -- in August -- Pikes Peak Area, CO   

goldbloom saxifrage (Saxifraga chrysantha) -- in July -- Baker Pass, Never Summer Mountains, Routt National Forest, CO yellow & orange    

goldbloom saxifrage (Saxifraga chrysantha) -- in August -- Pikes Peak Area, CO

weak saxifrage (Saxifraga rivularis) -- in July -- Zimmerman Lake Trail, Larimer County, CO   white & cream 

early saxifrage (Saxifraga virginiensis) -- in April -- Natchez Trace Parkway, southern Tennessee        white & cream