exosporia
/ˌɛksoʊˈspɔriə/
noun
- Plural of exosporium; the outermost layer or covering of a spore, especially in certain plants and fungi.
- Scientists compared the exosporia of different fern species.
- The exosporia of these moss spores are covered in tiny bumps.
- The exosporia provide a waterproof barrier for the spores.