Polyphenol production in Crataegus Tissue cultures (Hawthorn)
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29 August 2022
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The genus Crataegus originates from northern temperate regions and comprises about 280 species depending upon botanical sources (Grisvard et al. 1964; Mabberley 1987). It is widespread in western Asia, North America and in Europe, where 21 species have been indexed (Tutin et al. 1968). Hybridization is frequent in this genus (Mabberley 1987), causing many identification difficulties. Among the best-known species are Crataegus monogyna Jacq. and Crataegus laevigata (Poiret) DC (= C. oxyacantha auct.= C. oxyacanthoides Thuill.) belonging to the Eurasian subgenus Crataegus which are most common and are of growing pharmaceutical use. They have lobed or divided leaves, while the northern American subgenus americanae is characterized by entire or weakly lobed leaves (Mabberley 1987).