When "Rafflesia" is ready to reproduce, a tiny bud forms outside the root or stem of its host and develops over a period of a year. The cabbage-like head that develops eventually opens to reveal the flower. The stigmas or stamens are attached to a spiked disk inside the flower. A foul smell of rotting meat attracts flies and beetles. To pollinate successfully, the flies and/or beetles must visit both the male and female plants, in that order. The fruit produced are round berries filled with numerous minute seeds.