macro of missouri evening primrose oenothera missouriensis with very large, solitary, 4-petaled, bright yellow flowers flowering

4petaled backlight beautiful bloom blooming blossom botanic botany bright closeup colour contrast evening flora floral flower flowering foliage garden gardening intense large macro missouri missouriensis nature oenothera outdoors park petals plant pretty primrose rich rock rocky solitary stamen sun sunlight very yellow