Ficus ampelas illustration from Roxburgh Flora Indica (1768). Note the distinctive pale under-surface of the leaf.
FICUS AMPELAS SECTION SYCIDIUM
According to Berg and Corner (2005) “The presence of this species in Borneo is not very certain, as it is represented by a single collection (by De Vriese) without precise indication of provenance.
Most likely to be found on one of Borneo’s north or east coast islands.