Rafflesia Park where the flowers are numbered and monitored by the park rangers. "Rafflesia" are also remarkable for showing a large horizontal transfer of genes from their host plants. This is well known among bacteria, but not higher organisms. The name "corpse flower" applied to "Rafflesia" can be confusing because this common name also refers to the titan arum ("Amorphophallus titanum") of the family Araceae. Moreover, because "Amorphophallus" has the world's largest unbranched inflorescence, it is sometimes mistakenly credited as having the world's largest flower. Both "Rafflesia" and "Amorphophallus" are flowering plants, but they are only distantly related. "Rafflesia arnoldii" has
Rafflesia verrucosa are also both small. One unique morphological feature of "R. verrucosa" is its monoecious or bisexual nature. The only other reported bisexual species in this genus is "Rafflesia baletei". "R. baletei" has male and female flowers that contain vestigial structures of the opposite sex. Further studies will be needed to conclude if the species is a functional bisexual. "Rafflesia verrucosa" has been found only growing on the southeastern slope of Mt. Kampalili in the Davao Oriental Province of Mindanao. The plant can be found between 1350 and 1550 m. in elevation even though the Tetrastigma vines that the plant grow