Divergent evolution
Divergent evolution can be seen in the forms of the reproductive organs of flowering plants which share the same basic anatomies; however, they can look very different as a result of selection in different physical environments and adaptation to different kinds of pollinators.
Figure 1. Flowering plant examples
Flowering plants evolved from a common ancestor. Notice that the dense blazing star (left) and the purple coneflower (right) vary in appearance, yet both share a similar basic morphology. (credit: modification of work by Drew Avery and Cory Zanker respectively)