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Abstract
In this study, phytochemical data taken from the literature on eleven natural populations, corresponding to eleven taxa of Cistus L., as well as those from twelve cultivated populations, corresponding to twelve taxa, were elaborated by means of numerical methods to estimate possible biochemical similarities in the genus. Cistus L. can be divided, on the basis of diterpenes and flavonoids, in natural populations, and, based on flavonoids, in cultivated ones. Different results were obtained using diterpenes and flavonoids as a diagnostic criterion as well as using plants grown under cultivation or in the wild. The chemotaxonomic significance of the selected chemical compounds and the relationships between the taxa studied are discussed.