Cornus canadensis
Each flower has highly elastic petals that flip backward, releasing springy filaments that are cocked underneath the petals. The filaments snap upward flinging pollen out  in less than half a millisecond. The pollen experiences a force two to three thousand times the force of gravity.  The Bunchberry has one of the fastest plant actions found so far. It needs a camera capable of shooting 10,000 frames per second to catch the action.