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R. M.  Harley and Paucar, A. G., ?List of species of tropical American Clinopodium (Labiatae), with new combinations?, Kew Bulletin, vol. 55, pp. 917?927, 2000.

M.  Hirotani, Kuroda, R., Suzuki, H., and Yoshikawa, T., ?Cloning and expression of UDP-glucose: flavonoid 7-O-glucosyltransferase from hairy root cultures of Scutellaria baicalensis?, Planta, vol. 210, pp. 1006?13, 2000.