Jay,
Most places only sell the M. caulifora. Some places have the M. vexator. I think everywhere you've probably only had the caulifora. I think sabara is the common variety of caulifora. Now that people like Adam and Berto have the other species, maybe nurseries will start carrying them too. Excalibur said it has the coronata (well, he said he had one with giant fruit, so I assumed coronata but it may be something else). Oscar has made the hybrid seeds readily available now and maybe more people will start selling them.
Actually looking at my notes, the one that nurseries most carry, is not M cauliflora, its M. jaboticaba.
The two are almost indistinguishable to the untrained eye (and even to a trained eye!)
M. jaboticaba fruits are always sweet, never acid (where cauliflora has acid varieties like Ponhema)
Also caulifora is generally a shorter tree, with slightly larger leaf and fruit.
Good luck telling the difference! Chances are, it's M. jaboticaba, sabarah...Hate to break it to you all, but the trees you have from PIN, Hopkins, and most other nurseries in USA, are mislabeled as M. cauliflora.
I'm sure I'll catch heat for saying this, but you can suck my "assu paulista" pulp.
Statement above is not intended to be directed at mirahulin, just the general public! sorry! lol