1) Fruiting body 2) Spore fruit 
Aecium (plural aecia) is a specialised reproductive structure found in some rusts and smuts which produces aeciospores. In some literature aecia are also referred to as `cluster cups`. ...
In the Uredinales the first sorus that is formed after plasmogamy and bears binucleate aeciospores (Stage I heteroecious or autoecious rusts). (Pl. 
a cluster-cup or fruiting body of certain rust fungi (phylum Basidiomycota, kingdom Fungi). Yellow to orange in colour, aecia develop after ...
A cup-shaped fruiting body of rust fungi eg. Puccinia graminis in which aeciospores are produced. Aecia may be of the aecidium, caeoma, peridermium or roestelium type.
[n] - fruiting body of some rust fungi bearing chains of aeciospores
noun fruiting body of some rust fungi bearing chains of aeciospores
the fruiting body of rust fungi, which bears chainlike or stalked spores.