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Size of the involucre and the nectaries of male and hermaphrodite cyathia of E. nicaeensis in successive levels of inflorescence. Values are means ±95 % confidence intervals. Different letters indicate significant differences in size between inflorescence levels with Bonferroni-corrected P level (0·05/4 = 0·013). Note that both types of cyathia of level 2 were combined for the analysis.
