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δ13C (‰) values for well-watered leaves for species from (A) Crassulaceae (n=16) and (B) Aizoaceae (n=12). Linear regression lines with coefficients of determination and significance of correlations are shown. (C) Response of δ13C values for select species from the Aizoaceae that were well watered or subject to water stress for 7 d or 14 d.
