Ficus grossularioides photographed at Gunung Palung in West Kalimantan. Note the characteristic very pale under surface of the leaf. The brightness/whiteness is very variable and appears to diminish further north in Borneo.
Photo by George Weiblen of herbarium collection GW858
Laman & Weiblen (1998) Figs of Gng Palung NP Kalimantan