Hoya hellwigiana is a PNG native and great plant;  I say that even though I have killed it a couple of times.  When it is in active growth, the leaves are shiny with lots of red, and it is an extremely attractive plant.  It flowers early and often.  I find that it is not a plant for general household conditions; it really prefers lots of humidity and warmth.  Let this one dry out between waterings or you will quickly need to take cuttings to start it over.  Here is a video tour of the plant from  2012:

** Update December 2022 ** Hoya hellwigiana is now considered a synonym of Hoya nicholsoniae and has been moved there along with Hoya samoensis by Michele Rodda.