Western Prickly Pear Cactus (Opuntia macrorhiza), Cactus Family (Cactaceae), native and found in open, dry places from plains to foothills on the eastern and western slopes. Blooms from May through...
Snow on the Mountains (Euphorbia marginata), Spurge Family (Euphorbiaceae), native and common in shortgrass prairie, disturbed areas, fields, floodplains and along roadsides from plains to foothills on the eastern and western slopes. Blooms June through...