Iridoid and flavonoid patterns of the genus Veronica sect. Alsinebe subsect. Agrestis (Benth.) Stroh (Lamiales) and their systematic significance

Distribution of two iridoid and 6 flavonoid compounds in four Veronica sect. Alsinebe subsect. Agrestis species (23 samples) from Iranian natural populations was investigated. Veronica francispetae and V. siaretensis were studied for these compounds for the first time. The iridoid and flavonoid patterns showed a good correlation with other chemical and morphological features of these taxa. The studied species are closest together according to the flavonoid patterns: species containing quercetin derivatives are V. persica, V. polita and species containing quercetin are V. francispetae, V. siaretensis.