Rafflesia arnoldii (Rafflesia arnoldii). By local population it is called 'the corpse flower' because of its bad odour that reminds some sort of carrion, rotting meat. It is the largest flower in the world and includes 28 discovered subspecies only in S.E. Asia. Out of this 28 species, 6 coexist in Sumatra. The flower has 5 thick petals that resemble a hide. In the diameter it usually measures 90-100 cm. The largest on record had 120 cm. The weight is about 7-10 kg. and the heaviest had 16 kg.(source Wikipedia). The plant lacks leaves, stems or roots, it is a parasite that entirely lives inside a vine (Cissus).