I agree with Raulglruiz , the seedlings do look like the Arrayan we have here in Mexico , on the other side they do look very similar to a jaboticaba seedling . I have several Jaboticabas that do not have a full scientific and common name and were sent to me as Myrciaria / Plinia sp from this or that area or with the name of the guy in whose orchard they were collected . Probably the " Arryan " was a typo missing one A .