Menisperine was newly isolated, besides the bases found and reported to date, from the trunk bark of Phellodendron amurense RUPR. (Japanese name “Kihada”). Examination of bases in the root bark resulted in isolation of berberine, jatrorrhizine, phellodendrine. and candicine. Berberine was also isolated from the wood and berberine and jatrorrhizine from the fruit, including the seeds.
