ENDOSPERMIFOLIA Ficus endospermifolia Corner (1960)  SECTION: ERIOSYCEA

 Latin: Refers to the leaf shape as being similar to the leaves of Endospermum a small tree in the Euphorbiaceae, common in secondary forests.

Plant: Medium tree to 25 m  found in open areas on mountain slopes often in secondary forest. The leaf is a very distinctive heart shape.

Fig: The large fig 1.5-2.5 cm is covered in very short hairs and looks similar to the fig of Ficus brunneoaurata but is slightly larger. The fig ripens from green to yellow brown.

Leaf: A very distinctive large heart shaped leaf which as with many other Moraceae may be lobed (palmate) when the plant is young.

Sex: Dioecious

Similar species. Ficus eumorpha lives in the same montane habitat and also sometimes has heart shaped leaves but they are always densely covered in short hairs whereas Ficus endospermifolia leaves are smooth above (glaborous). F. endospermifolia has a striking large orange/red stipule whereas F. eumorpha has a short stubby brown stipule.

Ficus  brunneoaurata  also has a striking  orange red stipule  but the leaf is shaped like a broad spear blade not a heart as with Ficus endospermifolia. Note that both Ficus aurata and Ficus fulva have pale green stipules not orange red  or brown stipules.

Distribution: Confined to the hills and mountains of Sabah from c. 1,000 -1,800 m., where it replaces F. brunneoaurata at levels above c.1,000 m. For example F. endospermifolia is common along the access road to the summit of Gunung Alab (1,964 m) the highest point in the Crocker Range.

F. endospermifolia is one of the most common figs in the forest surrounding Kinabalu Park HQ and along the road to the Timpohon gate (2,000) at the start of the Kinabalu summit trail. The area around the Kiau Gap view point (Lumu Lumu) parking lot  is particularly rich  in figs including F. endospermifolia, F. eumorpha and F. malayana. Kiau Gap is where G.H. Wood the Conservator of Forests in 1954 collected the specimen from which J.H. Corner later described the type.

There are only two collections south of the Sabah border. There is a record from the summit of Gng Pagon on the border of Brunei and Sarawak (S.47783) and another from Ulu Anap Tatau District in the hills of Sarawak (S.17688).