Rafflesia arnoldii 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" because of its repulsive odor. "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. When "Rafflesia" is ready to reproduce,
Mount Kinabalu The orchids are the best-known example with over 800 species including some of the highly valued "Paphiopedilum" slipper orchids, but there are also over 600 species of ferns (more than the whole of Africa's 500 species) of which 50 are found nowhere else, and the richest collection in the world for the "Nepenthes" pitcher plants (five of the thirteen are found nowhere else on earth) which reach spectacular proportions (the largest-pitchered in the world being the endemic "Nepenthes rajah"). The parasitic "Rafflesia" plant, which has the largest single flower in the world, is also found in Kinabalu (particularly "Rafflesia keithii"