Open main menu
The earthstar fungus Myriostoma coliforma has multiple ostioles through which spores are released.

An ostiole is a small hole or opening through which algae[1] or fungi release their mature spores. The term is also used in higher plants, for example to denote the opening of the involuted fig inflorescence through which fig wasps enter to pollinate and breed.


  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