Nice find! I'm curious to see how many of the little guys will survive.
If the fruit is not very special, this could be a nice rootstock for sweet varieties
Yes, all of them had roots (mixed), so it's a miracle for me... I hope all my fruit trees would do that! They should all be fine in the shade now.
About my supposed acid uvaias -none of them fruited yet-, I was planning to use them just for juices, brasilians wrote in many blogs that they drink them that way