The insides of some kind of flower. (I would not be the one to ask.) :)
You're on the right trail, Lynn :-)
It's the stamen of some beautiful flower - looks like it might be an anemone? Whatever it is, it's so delicate and beautiful - like the petals are gently cupping the center.
magnolia? Its also a beautiful photograph!
Did you ever see the trail of a (jet) plane left in the sky? Or ripples of water flowing out from one concentric 'plunk' of someth...