Which one is the largest...

Did you know about the largest flower in the world? If you answered Rafflesia arnoldii, then your answer is not wrong. These plants are able to grow with up to three feet wide and can reach 11 kg weight. These plants only appear in the forests of Sumatra and Kalimantan. But, did you know that Amorphophallus titanum or known by the name of The Titan Arum can reach three feet tall with up to 3 meters tall, and able to weigh 80 kg or about 170 pounds! If you want to know the form of the flower, look at 500 rupiah banknotes in the past, yup that's dead flowers ever found in the interior of Sumatra.  
                                          (Rafflesia arnoldi)

                                                     (Amorphophallus titanum)