ostiole

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Definition of ostiole

2 senses · 1 part of speech · etymology included

noun

A small hole or opening through which certain fungi release their mature spores.

“The Erysiphacae may possibly have given rise to the Laboulbeniales, the only other group in which a single daughter cell of the oogonium is responsible for the asci, and perhaps to the lower Pyrenomycetes also; these, like the Erysiphaceae, have regularly arranged asci, and in Chaetomium fimete the perithecium is without an ostiole.”

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noun

A small hole or opening through which certain fungi release their mature spores.

“The Erysiphacae may possibly have given rise to the Laboulbeniales, the only other group in which a single daughter cell of the oogonium is responsible for the asci, and perhaps to the lower Pyrenomycetes also; these, like the Erysiphaceae, have regularly arranged asci, and in Chaetomium fimete the perithecium is without an ostiole.”
A similar hole or opening in plants, such as the opening of the involuted fig inflorescence through which fig wasps enter to pollinate and breed.

Definitions from Wiktionary, CC BY-SA.

Borrowed from Latin ostiolum.

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