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Amorphophallus Titanum inflorecense has reportedly reached 103 inches, and the leaf and petiole can reach upwards of 20 ft!
Corpse flower
it grows in the amazon
The Corpse flower is Amorphophallus Titanum. The common name comes from the smell of rotting flesh it exudes.
The scientific name of suran is Amorphophallus paeoniifolius.