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Floral scent profiles. Floral scent differentiation among taxa in the Ophrys hybrid zone investigated. Canonical discriminant function (CDF) plot of all odour compounds (relative proportions, in %) found in epicuticular extracts of the Ophyrs flowers. Functions 1 and 2 account for 100% (86.0% and 14.0%, respectively) of the total variability in floral odour among orchid taxa.
