Ficus dubia  (leaf above) and Ficus drupacea are two relatively common large stranglers which are easy to distinguish when they are fruiting  but much more difficult  when no fruit are available. The photos below highlight the distinguishing features of the two species. In all the photos  Ficus dubia is on the left and Ficus drupacea is on the right. All photos  of leaves and stipules taken by Shuai LIAO of two trees growing on Gaya Island along the trail from Base Camp to Police Bay.

Shuai LIAO’s original collection refs: F. dubia: 20190328  and F. drupacea: 20190321. 

LHS: Ficus dubia. RHS: Ficus drupacea The leaves overlap both in size and number of side veins. With F. dubia the looped side veins  at the edge are very clearly formed. With F. drupacea the  side veins are looped but  less clearly and branch (are furcate)  at the edge of the leaf.

LHS: Ficus dubia. RHS: Ficus drupacea. The general appearance  of both upper and under sides of the leaf are that Ficus drupacea  leaves are darker green and more glossy and the side veins on both sides are more prominent on Ficus drupacea compared with Ficus dubia.

LHS: Ficus dubia. Has  an awl shaped sharply pointed smooth stipule which is hairless and usually green or reddish green.

RHS: Ficus drupacea has a cone shaped stipule often furry or hairy.

LHS: Ficus dubia with fig fruits. Photo by Arlene Walshe

RHS: Ficus drupacea with fig fruits . Photo by Quentin Phillipps