Needles of Pseudolarix amabilis contain one principal flavonoid, which was identified as myricetin-3-rhamnoside. Myricetin-3-glucoside, quercetin-3-rhamnoside, kaempferol-3-glucoside, kaempferol-3-(ferulylglucoside) and kaempferol-3-(p-coumarylglucoside) were present in much lower concentration.