Tropicdude, have you tasted G. aristata (Cuban mangosteen)? How are the fruits? I have one plant flowering, but so far putting out only male flowers.
I have not tasted them, the ones I have were planted from seed, they were very easy to start and had almost 100% germination.
I could not find any cultivation information on them, so i scattered them in little pots all over the place, I did lose a few, but still have around 6. I learned the hard way not to let them get dry.
they also have an extremely long tap root, I think one I transplanted had a root 10 times longer than the plant itself.
They are slow growers, but not as slow as G.mangostana, they look different, the leaves are smaller, with a single spine on the tip of the leaf.
Oscar , you posted way back in the forum that you have a tree that's like 14 years old, looks like in for a long wait.
In Cuba, natural remedies are the first to be prescribed by doctors, imported pharmaceuticals are only used as last resort and only sold for use in the very young, and very old. oddly enough, life expectancy in Cuba, is almost identical to that in the US.
G. aristata is used to treat bronchial problems, the problem is, the roots are what have this medicinal property and because the trees grow so slow, you can see this will spell the end of this tree there eventually, unless they start growing them for this purpose.
Some conservation steps being taken:
http://www.telepinar.icrt.cu/ving/index.php?option=com_content&view=article&id=6191:the-manaju-in-the-conservation-process&catid=74:science&Itemid=127http://www.ecured.cu/index.php/Manaj%C3%BA