Is this a Pepper or a Blueberry?
I originally thought this was a wild pepper, like a pequin. The blooms and leaves look like a pepper to me. But the tiny round (1/4 in.) berries ripen directly from green (with light vertical veins in the skins) to dark purple. I have tasted one of the purple ones, carefully, and it was sweet! Lots of tiny edible(?) seeds inside, with purple flesh. This is a low mounding plant, about one ft. tall.
We have this plant growing on our sandy property in NE Texas. It is growing near an overhang, so that it gets sun for a few hours in the morning only. It is growing near where we keep water for washing hands.
Here is a link that might be useful: unknown berry