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aecium
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aecium

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Also known as: aecidium
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Also called:
aecidium

aecium, a cluster-cup or fruiting body of certain rust fungi (phylum Basidiomycota, kingdom Fungi). Yellow to orange in colour, aecia develop after fertilization and bear one-celled spores (aeciospores, or aecidiospores). Aecia are usually found on lower leaf surfaces of plants.

This article was most recently revised and updated by Kara Rogers.