Something akin to this? http://www.google.com/search?hl=en&...urce=og&sa=N&tab=wi&ei=hC7gTsP-C67-iQLI0sCFDw
I am not aware of any Mussaenda that originate in South America so I believe that family would be out.
Colombia, are you sure that this is truly wild in Colombia? Is there any chance it could be cultivated or naturalized? It certainly looks like a Mussaenda. Those red things are not inflorescence bracts but enlarged sepals. In fact this is a feature that seems to have evolved independently in a number of genera of Rubiaceae, but I don't know which American genus or genera might have them. The family is extraordinarily diverse in Central and South America, so it could prove difficult to find the answer.
I would suspect it is fairly easy for plants to naturalize here. Yet at the time Colombia is not a location where one would bring a large diversity of exotic plants too. There are not many garden enthusiast here. This plant was along a dirt road in the foothills and I have never seen it elsewhere. It does not look like one would use it for their garden. It was raining and getting dark when I photographed this plant and it was the last plant I photographed before my camera got damaged from the humidity or rain so I did not get a good look at it. I will try to get a closer look next time I am in that area.
Congratulations Colombia. Great to put a name to your pics. It is a beautiful flowering shrub. Looks like you will have to go back to get some pic of the flowers to see which one it is. 8 good pics of Pogonopus speciosus 1st link. http://toptropicals.com/catalog/uid/pogonopus_speciosus.htm 2nd link shows Pogonopus exsertus. http://biogeodb.stri.si.edu/bioinformatics/dfmfiles/files/c/21911/21911.JPG
