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/ˈiːs.i.əm/ · noun
(mycology) A cuplike fruiting structure of some parasitic rust fungi that contains chains of aeciospores..
1932 August, Ralph Ulysses Cotter, Factors Affecting the Development of the Aecial Stage of Puccinia Graminis, US Dept of Agriculture, Technical Bulletin No. 314, page 29, The writer therefore made observations to determine the conditions under which the aecia open and discharge spores most readily.
The receptive hyphae with binucleate cells eventually form the basal cells of the aecium.[…]Many cup-like structures, called aecia, appear on the lower surface of leaf.
It is a heteroecious rust and its aecia are produced on species of Oxalis, namely O. stricta, according to Arthur (1929).
Use aecium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Aecium means (mycology) A cuplike fruiting structure of some parasitic rust fungi that contains chains of aeciospores..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
1932 August, Ralph Ulysses Cotter, Factors Affecting the Development of the Aecial Stage of Puccinia Graminis, US Dept of Agriculture, Technical Bulletin No. 314, page 29, The writer therefore made observations to determine the conditions under which the aecia open and discharge spores most readily.
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