Spatial phylogenetics of the North American flora
Brent D. Mishler, Robert Guralnick, Pamela S. Soltis, Stephen A. Smith, Douglas E. Soltis, Narayani Barve, Julie M. Allen, and Shawn W. Laffan
Journal of Systematics and Evolution . 2020, (4): 393 -405 .  DOI: 10.1111/jse.12590