Flavonoid systematics of ten sections of Ludwigia (Onagraceae)

摘要: Abstract Data for the flavonoids of 19 species in 10 sections Ludwigia are presented. Eight flavonoids, comprising four glycoflavones, which vitexin and isovitexin reported first time Ludwigia, flavonol glycosides, based on quercetin, present these species. Each section treated here has either glycoflavones or flavonols; presence only onte class is considered to be advanced genus as a whole, compared with both flavonols more generalized sects Myrtocarpus Cinerascentes, Pterocaulon, were examined earlier. Only Macrocarpon (four species), Seminuda (five ditypic African sect. Africana, monotypic Brenania, Cryptosperma, Prieurea, east Asian Nipponia, pantropical Fissendocarpa. Old Wodd Caryophylloidea Oligospermum, comprises nine widespread OId New Worlds.