Aim Understanding the genetic structure of plants in their native range is crucial when reconstructing the invasion history of weeds. This information allows researchers to pinpoint the provenance of invasive plants and to test the importance of genetic admixture in facilitating invasion success. We assessed genetic structuring across the native range of A. auriculiformis , to determine whether genetic admixture contributes to...

The presence of hybrids in plant invasions can indicate a potential for rapid adaptation and an added level of complexity in management of the invasion. Three Casuarina tree species, Casuarina glauca , Casuarina cunninghamiana and Casuarina equisetifolia , native to Australia, are naturalized in Florida, USA. Many Florida Casuarina trees are considered unidentifiable, presumably due to interspecific hybridization. We collected...