... is the world's largest flower.
It weighs 7 kg (15 pounds) and grows only on the Sumatra island of Indonesia. Its petals grow to meter (1,6 feet) long and 2,5 cm (1 inch) thick. The species is named after the naturalist and humanitarian Sir Stamford Raffles, who founded the British colony of Singapore in 1819. Raffles discovered the parasitic plant with his friend Dr. Joseph Arnold (an English Botanist) at Pulau Lebar in Sumatra during their travels in May 1818. The rafflesia arnoldi is named after the two.