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,
Rafflesia schadenbergiana Pascal Lays found a specimen of this species in South Cotabato in 1994 while studying the Tasaday. A population of this rare "Rafflesia" species was recently discovered in Baungon, Bukidnon, just outside the buffer zone of the Mount Kitanglad Natural Park in 2007. For more information about the remarkable species, see the review in the following citation. "R. schadenbergiana" is endemic to the island of Mindanao, Philippines. Rafflesia schadenbergiana Rafflesia schadenbergiana is a parasitic plant species of the genus "Rafflesia". Known as ""bó-o"" to the Bagobo tribe and ""kolon busaw"" to the Higaonon tribe of Bukidnon, it has the largest