This leaf was from a woody liana growing  on limestone rock near the village of Payung Payung near the new airport on Pulau Maratua, one of the Derawan Islands in East Kalimantan. On its own the leaf is remarkably similar to a leaf of Ficus bracteata a rare  hemi-epiphytic liana of Borneo and Sumatra but is more likely to be F. annulata a common liana fig throughout Borneo.

Ficus maratua  Payung Payung leaves  IMG_3018 - Copy.jpg