missouri evening primrose (oenothera missouriensis) with large, 4-petaled, bright yellow flowers flowering

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