Fig 2.

Habitat suitability predicted for G. tomentosa (A), G. struthium subsp. struthium (B) and G. bermejoi (C) during the Last Glacial Maximum. These are the potential areas according to the bioclimatic variables for the three taxa. All these plants are strict gypsophytes and the real values of suitability are 0 in the locations without suitable soils. (D) shows the differences in bioclimatic suitability for the three species. To produce these box plots, only those values from locations with favorable soils (see map Fig 1D) have been taken into account. Notice that both, maps and box plots, show a suitability of almost 0 for G. bermejoi during this period.