Ostiole

An ostiole is a small hole or opening through which algae[1] or fungi release their mature spores.

The earthstar fungus Myriostoma coliforme has multiple ostioles through which spores are released.

The word is a diminutive of "ostium", "opening".

Cross-section of the syconium of a female creeping fig. The green, bract-lined ostiole at the bottom admits wasp pollinators.

The term is also used in higher plants, for example to denote the opening of the involuted syconium (fig inflorescence) through which fig wasps enter to pollinate and breed.

Sometimes a stomatal aperture is called an "ostiole".[2]

See also

References
Wikimedia Commons has media related to Ostioles.
  1. Fletcher, R.L. 1987. Seaweeds of the British Isles. Volume 3 Fucophyceae (Phaeophyceae) Part 1 p.304 British Museum (Natural History) ISBN 0-565-00992-3
  2. "Synergistic Pectin Degradation and Guard Cell Pressurization Underlie Stomatal Pore Formation", doi:10.1104/pp.19.00135


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