Results from Vergara and colleagues (2008) refute taxonomic arrangements placing Brazilian satintail (Imperata brasiliensis) as a synonym of cogongrass. Overlap of populations of Brazilian satintail with cogongrass in Florida and Louisiana as well as with different variants of cogongrass in Alabama, Mississippi, and Florida may set the stage for hybridization to occur (Vergara et al. 2008). Interbreeding of different species and variants may potentially produce hardier, more aggressive plants that reproduce well from seed. Such hybrids could be very problematic to control (Vergara et al. 2008).