aecidium

[ee-sid-ee-uhm]

noun

Mycology.

plural

aecidia 

1. an aecium in which the spores are always formed in chains and enclosed in a cup-shaped peridium.

Word History and Origins

Origin of aecidium¹

From New Latin, dating back to 1865–70; aecium, -idium

Example Sentences

Aecidium Grossulariae—the latter sometimes indicating the presence of Chytridiaceae.

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Peridermium Pini and Aecidium elatinum also cause cankers under certain conditions, as also does Gymnosporangium, but in these cases the fungi are more truly parasitic.

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Puccinia suaveolens causes partial atrophy of the leaves of Thistles, Aecidium Euphorbiae of those of Euphorbia.

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The carpels of Anemone are atrophied in plants attacked by Aecidium, and the whole flower is suppressed in Cherries infested with Exoascus Cerasi, while other fungi—e.g.

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Caeoma on Pines, Aecidium on Nettles, also Puccinia on petioles of Mallow, Cystopus on inflorescences of Capsella, etc.

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