Phellodendron amurense Rupr. is a dioecious tree with abortive carpels in the staminate flower and abortive stamens in the pistillate flower.

• 黄檗(Phellodendron amurense Rupr.；) 为雌雄异株植物，雌花中有退化的雄蕊原基，雄花中有退化的心皮。