Rafflesia arnoldii, corpse flower: It is also known as the 'corpse flower' due to its offending smell. This plant is a genus of flower with 28 known species, the second largest of which is Rafflesia kerrii, found in the Tenasserim-South Thailand Semi-Evergreen Rainforests ecoregion, with blooms measuring 70 to 110 cm across, or over three feet. Only Rafflesia arnoldii of Sumatra, found in the Sumatran Montane Rainforests ecoregion, exceeds its dimensions slightly, becoming the largest single flower on Earth. Rafflesia is endemic in Malaysia, Thailand, Indonesia and the Philippines.