Niche divergence at the intraspecific level in an endemic rare peony (<i>Paeonia rockii</i>): A phylogenetic, climatic and environmental survey.

Climatic variables Analysis of the environmental climatic variables using the Kruskal–Wallis test to compare the climatic niches of the two subspecies found two variables with highly significant differences ( p < 0.01; bio3 and bio4), two variables with significant differences ( p < 0.05; bio11 and bio18), and the other five variables were not statistically different ( p > 0.05; bio8, bio12, bio15, bio17, and bio18) ( Figures 4 , S5 ).

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