Ficus heterophylla. Illustration from Flora Indica Roxburgh (1768). In Borneo this fig is confined to river banks in SE Borneo. The closest relative is Ficus montana.
Distinguishing between Ficus montana and Ficus heterophylla.
Ficus heterophylla leaves are usually asymmetric with one side of the base distinctly larger than the other . The leaves grow in flattened sprays.
Ficus montana leaves are usually symmetric with a heart shaped base. The leaves grow in whorls.