In order to investigate the compositional characteristics of leaves and fruits from <i>Ardisia crenata</i>, source of the potent Gq inhibitor FR900359, as well as leaves of other related <i>Ardisia</i> and rarely investigated <i>Damnacanthus</i> species, we report the structural identification and quantification of flavonoid glycosides from these plants. Seven different samples, including leaves of three <i>Ardisia</i> species (<i>A. crenata</i>, <i>A. japonica</i> and <i>A. pusilla</i>), leaves of two <i>Damnacathus</i> species (<i>D. major</i> and <i>D. indicus</i>), and two fruits of <i>Ardisia crenata</i> (red and white), were investigated. A total of forty-six flavonoid glycosides were identified and their quantitative results based on the internal standard, 2,4,5-trimethoxycinnamic acid, are reported for the first time. Also, among these samples, the leaves of the red fruit <i>Ardisia crenata</i> showed the highest content of 20 types of flavonoids including kaempferol 3-<i>O</i>-glucoside (astragalin), at 503.8 ± 11.9 mg/100 g.