I watched this specimen for a whole week at the Cairns Botanical Gardens in the hopes that it would flower. It flowered partway and then aborted. What a bummer.
This species is probably even more restricted in distribution than Eupomatia laurina and I have so far only seen it in Cape Tribulation. E. laurina and E. barbata can be readily told apart. Firstly, E. barbata is generally a smaller shrub. Nextly, the venation of E. barbata is much rougher on the underside. Also, the stems of this species has a little extension of the leaf stalk going down the stem. More on this when I get a better shot of the flowers.