Parnassia genus ---- Grass-of-Parnassus family
fringed grass-of-Parnassus (Parnassia fimbriata) -- in August -- Colorado State Forest State Park, CO white & cream
fringed grass-of-Parnassus (Parnassia fimbriata) -- in August -- Zimmerman Lake Trail, Larimer County, CO
Kotzebue's grass-of-Parnassus (Parnassia kotzebuei) -- in July -- High Creek Fen Preserve, Park County, CO white & cream
Alaska grass of Parnassus (Parnassia palustris var. palustris) -- in July -- Yosemite National Park, UT white & cream