Image by BlueRidgeKitties
Cyathia (pseudo-flowers) of a Flowering Spurge. They are actually inflorescences with one female flower in the center and five male flowers around it, surrounded by white bracts with green nectar glands. On the middle one, the weird structure hanging down from the middle of the "flower" is the fruit. On this cyathium, the female flower has already been fertilized and is setting seeds. If you look closely at large size, you can see the pollen grains on the anthers of the middle flower.