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,
Rafflesiaceae not closely related to the parasites (as shown by molecular phylogeny results for other parts of the genome), this is believed to be the result of horizontal gene transfer. Especially high rates of HGT have been found to take place in Rafflesiaceae mitochondrial genes when compared to nuclear genes and to HGT in autotrophic plants. Rafflesiaceae The Rafflesiaceae are a family of rare parasitic plants found in the tropical forests of east and southeast Asia, including "Rafflesia arnoldii", which has the largest flowers of all plants. The plants are endoparasites of vines in the genus "Tetrastigma" (Vitaceae) and lack stems,