Psychotria racemosa looks like a match!
I have spend hours on searching, it wouldn't let me lose..
One of your links Janet brought the solution!
The flora do Brasil has two pics of Psychotria racemosa, one shows pointy growths in the leaf axles.
, the other shows the berries which are a match in colour and arrangement.
http://floradobrasil.jbrj.gov....
And then I came across these very excellent photos:
http://sura.ots.ac.cr/local/fl...
I'll make a crop that shows those pointy 'growths' in the axles (what would the botanical term be for that?)
