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 philippensis Manuel S. Enverga University (MSEUF), who formed a team composed of students and faculty to document the newly discovered "Rafflesia" species. The mature flower bud of "R. philippensis" has a diameter of around 13-16 centimeters. Its fully opened flower has a diameter of 29.3-32 centimeters, placing it in a group composed of other small-sized "Rafflesia" species such as "R. manillana", "R. lobata", and "R. baletei", whose open flowers measure an average of 20 centimeters in diameter. The open flower has 9-10 reddish perigone lobes measuring 9.0-10.5 centimeters with 8-12 white oval or elongated warts fused together along the median part