aecia

< /ˈi si ə, ˈi ʃi ə/. Mycology.

1. the fruiting body of rust fungi, which bears chainlike or stalked spores.

noun plural -cia (-sɪə) or -cidia (-ˈsɪdɪə)

1. a globular or cup-shaped structure in some rust fungi in which aeciospores are produced

Plural aecia (ē′sē-ə, ē′shē-ə)

1. A cuplike structure of some rust fungi that contains chains of aeciospores. Aecia usually form on the bottom surface of leaves.