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 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