Bilateral and Radial Symmetry

This mountain dryad (Dryas octopetala spp. hookeriana) is radially symmetrical -- any line drawn across the center of the flower shows mirror images.

Photo courtesy of
Rocky Mountain National Park.


  

 

This calypso orchid (Calypso bulbosa) is bilaterally symmetrical-- only
one line drawn across the center of the flower shows mirror images.

Photo courtesy of
Rocky Mountain National Park.