Rosa genus --- Rose subfamilY 2
prickly rose (Rosa acicularis ssp. sayi) -- in July -- Rollins Pass Road, Gilpin County, CO red & pink
prickly rose (Rosa acicularis ssp. sayi) -- in August -- Molly Lake, Red Feather Lakes Area, Larimer County, CO
wild rose (Rosa woodsii) -- in May -- Orchard Cove Trail, Lory State Park, CO red & pink