It is these ray florets that give the plant its devilish name. In a sunflower, a ray floret is what most people would call the petal, while the disc florets are what emerge from the middle portion.

A new species of sunflower, Ovicula biradiata, has been identified in Big Bend National Park, Texas. This discovery, made by a park volunteer, marks the first new genus of plant documented in a U.S.