Phytocrene bracteata 041004-2147
Sabah: Poring Hot Springs, at east base of Mt Kinabalu, in slightly disturbed submontane rainforest a short distance above base of mountain slope.
See adjacent shot for growth habit.
Uploaded as "Liana unknown family", but I now know it is Phytocrene in family Icacinaceae, thanks to Scott Zona and his palm colleague, eminent Kew botanist John Dransfield (see comments below).
Not much can be found from a search on this genus, over and above what I find in its entry in my most useful of all references Mabberley's Plant-book (3rd edn, 2008) -- "11 SE As., Mal. Lianes with large vessel-elements -- sources of potable water when cut."
[That means it has 11 species, occurring in Southeast Asia and Malesia. Botanists use the term Malesia to mean all of the Malay Archipelago plus peninsular Malaysia].