Bárcenas R. T., Hernández H. M., Supporting a young age for the North American deserts: Historical biogeography of Grusonia (Cylindropuntieae) in a Plio-Pleistocene temporal framework, Taxon, 2022, 71(5):981-992, doi: 10.1002/tax.12741
A reconstruction of Grusonia phylogeny and historical biogeography based on five plastid markers. The authors compare models of range change and date the main divergences, relating them to geographical barriers in North American deserts. The results depend on the molecular clock calibration adopted.