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 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 flower among the "Rafflesia" species found in the Philippines with a diameter ranging from 52-80 centimeters. It has also the second largest flower in the genus after "R. arnoldii". This species was first collected in the vicinity of Mount Apo, Mindanao during an expedition led by Schadenberg and Koch in 1882. It was not seen for more than a century and was assumed to be extinct until