Distribution of diploid and tetraploid individuals in populations (black dots) of Pachycereus pringlei. Dark gray areas in ICA and ICE indicate distribution of diploid (2n = 22) cytotypes. Diagonal shaded area indicates the predicted coverage of tetraploid (2n = 44) cytotypes. See Table 1 for full names of the abbreviated localities indicated in the map.

 
 
  Part of: Gutiérrez-Flores C, León-de la Luz JL, García-De León FJ, Cota-Sánchez JH (2018) Variation in chromosome number and breeding systems: implications for diversification in Pachycereus pringlei (Cactaceae). Comparative Cytogenetics 12(1): 61-82. https://doi.org/10.3897/compcytogen.v12i1.21554