One of the three national flowers of Indonesia, the Rafflesia arnoldii can be up to a meter in diameter and weighs up to 12 kilograms.
Dubbed the "corpse flower," the large bloom reeks of rotting meat—an adaptation it has developed to attract the flies that help pollinate the plant. The flower is endemic to the rainforests of Borneo and Sumatra.
Rafflesia arnoldii is rare and fairly hard to locate. It is especially difficult to locate the flower in forests, as the buds take many months to develop and the flower lasts for just a few days.
Another enormous flower found in Indonesia is the Amorphophallus titanum, or Titan arum. Like the Rafflesia, the Titan emits the smell of rotting flesh to attract pollinators.
Technically, the Titan arum is not a single flower. It is a cluster of many tiny flowers, called an inflorescence. The plant can reach heights of 2 to 4 meters and weighs as much as 80 kilograms!