Palawan, the most forested and least botanically known island in the Philippines was explored by an international expedition from March 1 to May 31, 1984. The sponsors were the Swedish Match Hilleshog Philippines Inc. and the Ministry of Natural Resources of the Philippines. Palawan separates the South China and Sulu Seas and forms a land bridge between Sabah and Mindoro in the Philippines. It is ca. 440 by 4.5—42 km, laying approximately between 8° and 12° North. There is a mountainous backbone, broken in two places, throughout its length with the three highest peaks at 2085 m (Mt. Mantalingajan), 1798 m (Mt. Victoria) and 1593 m (Cleopatra’s Needle).