perithecium
/ˌpɛrɪˈθiːʃiəm/
noun
- A small, flask-shaped structure in certain fungi that contains spores and has an opening at the top.
- Each perithecium releases spores through a small pore.
- Under the microscope, the perithecium looked like a tiny flask.
- The scientist counted the number of perithecia on the leaf surface.