purshia genus --- rose subfamily 2
antelope bush (Purshia plicata) -- in April -- Chihuahuan Desert Nature Center, TX red & pink
Stansbury cliffrose (Purshia stansburiana) -- in April -- Arches National Park, UT white & cream
Stansbury cliffrose (Purshia stansburiana) -- in May -- Canyons of the Ancients National Monument, CO
antelope bitterbrush (Purshia tridentata) -- in May -- Stove Prairie, Roosevelt National Forest, CO white & cream
antelope bitterbrush (Purshia tridentata) -- in May -- Sand Creek National Landmark, southern Wyoming white & cream
antelope bitterbrush (Purshia tridentata) -- in May -- Kreutzer Nature Trail, Poudre Canyon, Larimer County, CO
antelope bitterbrush (Purshia tridentata) -- in July -- North Fork Trail, Big Thompson Canyon, Larimer County, CO