Sapindaceae, unknown species

Just when I think I’ve found and collected all significant species from the semi-abandoned collection at the Panama City municipal botanical garden, I discover something else. On my last visit I found this tree (see below) fruiting. Lamentably, I neglected to get a photo of the ripe fruit, which is a purple version of the green fruit featured below. I ate a few of the ripe fruits. I won’t say they’re excellent, but they do appear to be edible. The closet thing I could relate the tree to is Caimito, althoug much smaller, but exudes a similar white latex. The edible portion is semi-translucent, also like Caimito. The bark was of a different texture.