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Relationships among environmental, epigenetic and phenotypic variation of Hydrocotyle vulgaris. The epigenetic variables are the first three axes from principal coordinate analyses (PCoA) of different types of subepiloci, i.e., (A) u-subepiloci, (B) m-subepiloci, and (C) h-subepiloci. The lines with arrows indicate significant correlations between variables, with coefficients and P-values showing near the lines.
