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
Joseph Arnold in Batavia. In 1818, he worked with Sir Stamford Raffles in Sumatra, where he died. The largest flowering plant, "Rafflesia arnoldii", was discovered by an Indonesian guide working for him and later named in Arnold's honour. Joseph Arnold Joseph Arnold (28 December 1782 – 26 July 1818 in Padang, Sumatra, Netherlands East Indies) was a naval surgeon and naturalist. His specimen collection is in the museum of the Linnean Society. Born in Beccles, Suffolk, Arnold learned surgery in Edinburgh and received a diploma in 1807. From 1808 to 1815, he worked as a naval surgeon for the Royal Navy, including