On biodiversity and conservation of the Iris hexagona complex ( Phaeiris , Iridaceae)

Taxonomic revisions using newly available molecular data can have profound consequences for identifying areas of high endemism and, therefore, conservation priority. A good example the connection between taxonomy, biodiversity ecology, and issues is genus Phaeiris (Iris subsect. Hexagonae), an endemic taxon southeastern United States in particular P. hexagona (I. hexagona) (Blue Flag), perhaps best-known species this genus. Some authors recently provided evidence need to revise taxonomy Blue Flag, which has usually been considered consist a single species, hexagona. Using bioclimatic analyses Flags from Florida Louisiana, collected at their loci classici, we challenge notion that referring almost forgotten taxonomic context as established by John K. Small Edward J. Alexander nearly 90 yr ago. Our vision complex reinforces current treatment Southern Coastal Plain hotspot. results also argue nature on Peninsula, elsewhere Plain, including new interpretation well-studied Louisiana irises. We propose valleys rivers lakes are likely harbor additional hidden biodiversity. Accurate proved be heuristic tool characterize better actual level within well describe different endemism. The re-documented diversity broadly defined should future efforts.