"Earth laughs in a flower. ~Ralph Waldo Emerson"
Echinacea purpurea - Echinacea comes from the Greek word Echinos meaning hedgehog. The hedgehog mushroom has teeth that are somewhat similar to the cone portion of the coneflower.
This has long been one of my favorite flowers. It is a great flower for attracting butterflies and honeybees. This flower readily self seeds if you allow the seedheads to remain.