aecium (noun)

1. The discovery of aecium in rust fungi by mycologists in the 19th century marked a significant advancement in the understanding of plant diseases.

2. In certain religious traditions, aecium is regarded as a sacred symbol representing the cycle of life and death.

3. The intricate structure of aecium inspires many artists to incorporate its forms and patterns in their paintings and sculptures.

4. The appearance of aecium on crops during a severe outbreak of rust disease instilled horror and fear among farmers, anticipating devastating losses.