Vázquez-Lobo A., Aguilar-Morales G., Arias S., Golubov J., Hernández-Hernández T., Mandujano M. C., Phylogeny and biogeographic history of Astrophytum (Cactaceae), Systematic Botany, 2015, 40(4):1022-1030, doi: 10.1600/036364415X690094
The molecular analysis reconstructs relationships among Astrophytum species. It connects the phylogenetic tree with their geographical distribution history.