How plants level up their stink

This exercise is a part of Educator Guide: A Squirrely Robot and Stinky Plants / View Guide
Three stinky plant flowers that have independently evolved the ability to make the scent of death and dung are shown. On the left, a fly crawls over the small green bell shaped flowers with brown edges of an evergreen shrub Eurya japonica. In the center a large barrel shaped maw of Asarum simile has three large petal-like arm with a red and white ring resembling rows of teeth surrounding a central hole. On the right is Symplocarpus renifolius with a green shoot and a huge red leaf that flops over at the tip and curves to create a cavern from which peeks a spiky, egg-shaped structure.
Some flowers smell like death, and for the same reason.