Figure 1 . Ploidy state of 1572 aquatic macrophyte species at a global-scale: A. Venn diagram of number of species per ploidy category; B. Schematic summary diagram of latitudinal patterns of ploidy, and climatic and biotic variables. (D = haploid/diploid, P = polyploid, D&P = mixed ploidy, Send = species richness of ecozone-endemic macrophytes; Stot = all-species richness; see Methods text for full explanation other abbreviations)