Calylophus lavandulifolius

Calylophus lavandulifolius (lavender leaf sundrops, formerly Oenothera lavandulifolia) is a low-growing perennial plant in the evening primrose family found in the Colorado Plateau and Canyonlands region of the southwestern United States.

Inflorescence and fruit
From May to July it blooms with striking yellow flowers that fade to shades of orange or lavender as the flower dries up.

Habitat and range
It grows in blackbrush scrub and mixed desert shrub up into pinyon juniper woodland and ponderosa pine forest communities, as far north as South Dakota, and up to 8500 ft in elevation in the southwest.