Here is a shrub I'd like to identify.
height: 4 feet
location: north Florida, upland, sandy soil
Sorry for the blurry pictures. Here are the leaves.
It seems that older stems develop bark, and younger ones are green.
Here is the whole plant with a chair for scale.
The soil here is probably somewhat acidic. Thanks for looking. Let me know if better pictures are needed.
That is a type of Vaccinium - blueberry. Perhaps Vaccinium corymbosum. A great family of shrubs. Leaves turn bright red here in fall.
Thanks. I did some research and found a list of Vaccinium species native to Florida (from online Atlas of Fl Vascular Plants).
*It's definitely not V. darrowii or myrsinites, and probably not V. arboreum. The dwarf blueberry and sparkleberry are pretty common in my yard. My neighbor had quite a few native blueberries in his yard so they must do well here too. I used to go over and pick them sometimes. But, he is a lawn person and ended up clear cutting most of the native vegetation.
Here is a link that might be useful: ISB: Atlas of Florida Vascular Plants
It's not arboreum, that has much more rounded leaves. And it's not stamineum, that has more horizontal, almost layered shape. I agree it's not the other two you already ruled out either.
That just leaves V. corymbosum, I guess. Too bad about your neighbor. ;)