Rafflesia arnoldii is a member of the genus Rafflesia. It is noted for producing the largest individual flower on earth. (There are some plants with larger flowering organs, the Titan Arum and Talipot palm, but these are technically clusters of many flowers.)
It occurs only in the rainforests of Sumatra and Borneo in the Indonesia Archipelago, the largest flower is found in many areas in Bengkulu forests, on the slopes of Bukit Barisan Mountains. The flower has a diameter of about one meter in full bloom. It has no visible root or stem, and no leaves. The weigth up to 7 kg, it takes the buds up to 8 months to mature. The flower stays in bloom from 1-15 days and can be seen during the months of September-December.
It lives as a parasite on the Tetrastigma vine, as its host, which grows only in primary (undisturbed) rainforests. While many parasites appear like normal plants, Rafflesia lacks any observable leaves, stems or even roots. Likened to fungi, Rafflesia individuals grow as thread-like strands of tissue completely embedded within and in intimate contact with surrounding host cells from which nutrients and water are obtained. Perhaps the only part of Rafflesia that is identifiable as distinctly plant-like are the flowers; although, even these are bizarre because they attain massive proportions and are usually reddish-brown and stink of rotting flesh, which is why it is nicknamed the "corpse flower". This scent attracts insects such as flies which then pollinate the rare plant. It is not to be confused with the Titan Arum, Amorphophallus titanum, which is also commonly referred to as the "corpse flower".
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. The flowers are unisexual and thus proximity of male and female flowers is vital for successful pollination. These factors make successful pollination a rare event.
Some information said that if one visit Rejang Lebong, the Flower was stand at the City Center of CURUP as a monument, that is why, the people call Bengkulu is A LAND OF RAFFLESIA, or in Indonesian means BUMI RAFFLESIA, because in a certain seasons, if we are lucky, we can see a beautiful flower of Rafflesia, in the forest, which appear in periodic of 5 years or more.
