aecium

复数：aecia

n.fruiting body of some rust fungi bearing chains of aeciospores

1. The aecium is an essential part of the rust fungus's life cycle.
   孢子囊是锈菌生命周期中的重要组成部分。
2. Researchers observed the development of aecia on infected leaves.
   研究人员观察到了受感染叶子上孢子囊的发育。