caption: The image shows a field of tall grass with a single purple knapweed flower in the middle. The flower has a unique shape with a long, thin stem and multiple petals that are arranged in a star-like pattern. The petals are a deep purple color and the center of the flower is a lighter shade of purple. The field is lush and green, with the sun shining down on the flower, creating a beautiful contrast between the vibrant purple and the green of the grass.