(Note: For reference, I've included links to the species profiles on Atlas of Florida's Plants website where you can see the native ranges, other photos, and more.
When I bought my starts for this Savanna Iris (Iris savannarum), I thought it was Dixie iris (I. hexagona). It was several years ago, but I think that's how it was labeled, but it turns out that it's not because it's not evergreen and the seed pods are not hexagonal enough. Also the Dixie iris is native to just a few counties in the Big Bend area, so it's preferable to have those that are native to my county.
It's done very well on a mound I built at the northern end of our front pond. (Click the link for more information on our pond.)