I’m growing seedlings from @JeremiahT’s local population of incarnata, but they are still small so I can’t comment on the flavor yet. Here’s where he posted about them:
I’ve had wild maypop fruit a few times in Georgia and Virginia, and they were ok but a lot less juice and flavor than a fresh edulis, so I’m hoping these will be better than the ones I’ve had. The pictures in that thread definitely look better!
Here is a photo from a couple days ago of my new seedlings: