Pyukusaur's flower is made of its innards, extruded out to release a noxious scent that draws in Bug-type Pokémon. Once in range, these Pokémon are soaked with an acid that slowly melts through living tissue.
Pyukusaur's flower is said to take on vivid colors if it gets plenty of nutrition and sunlight. It can eject its internal organs, which it uses to engulf its prey or battle enemies.