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Flavonoid Systematics of Ludwigia (Onagraceae) in Taiwan Author: Shong Huang

Abstract：

Two groups of species can be recognized in Ludwigia: one includes L. octovalvis, L, hyssopifolia, L. epilobioides and L. ovalis presenting glycoflavones; and the other includes L. adscendens, L. peploides and L. perennis containing flavonols based on kaempferol, quercetin and myricetin. Most of the flavonols are 3-0-monoglycosides, whereas a suggested compound quercetin 3'-O-diglucoside is found mainly in the leaf of L. perennis. The phylogeny and systematic relationships within this genus are discussed.

Keywords：Ludwigia, Onagraceae, Chemotaxonomy, Glycoflavone, Flavonoid

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