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 easily in Sumatra and Borneo. Species native to Borneo include "Rafflesia arnoldii", "Rafflesia cantleyi", "Rafflesia hasseltii", "Rafflesia keithii", "Rafflesia kerrii", "Rafflesia pricei", and "Rafflesia tengku-adlinii". "R. arnoldii" boasts the world's largest single bloom. Some endemic Borneon species, such as "R. keithii", begin blooming at night and start to decompose only two to three days later. The time from bud emergence to flowering is six to nine months. Male and female flowers must be open simultaneously for pollination to occur, hence successful pollination and fruit production are quite rare. In addition to habitat loss, these reproductive limitations are contributing factors to