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Sampling locations and distributions of the LFY alleles detected in the studied Ephedra species. Pie charts show the proportions of alleles, and thick and thin outlines indicate tetraploids and diploids, respectively. The number 2 following a population name indicates that two individuals were studied. Different colours of the pie charts indicate the positions of the alleles in the gene phylogenies shown in Fig. 5. Population names correspond to those in Table 1.
