perigynous stamen

例句：

1. 1. The plant's perigynosum is a crucial part of its reproductive system.
   植物的雌蕊柱头是其生殖系统的关键部分。
2. 2.In flowering plants, the perigynosum is responsible for pollen reception.
   在开花植物中，雌蕊柱头负责花粉的接收。
3. 3. The perigynosum is visible through a microscope, revealing the intricate structure of the plant's reproductive organs.
   通过显微镜可以观察到雌蕊柱头，揭示出植物生殖器官的复杂结构。