A Miasmo Flower is a type of Flower in Chibi-Robo!: Park Patrol. It was originally a different type of flower before being transformed by the gas attack of a Smogglob or Miasmo. They can be turned back to normal by touching them in any way or by using a Chibi-Gear on it. They don't count in the Flower Count.
Tip: to turn a lot of Miasmo Flowers back to normal quickly, drive through them on Chassy or the cart!