Gelatinous Sheath - LIAS Glossary

This is a test version of the LIAS Glossary. Many definitions presented here are still in need of revision! Criticism as well as collaboration is welcome!

gelatinous sheath (noun, ascospore term, spore morphology term, pl. gelatinous sheaths; synonyms: mucilaginous sheath, ectosporium) – the outermost layer of the ascospore; sometimes interpreted as an outer, gelatinous part of the perispore, sometimes interpreted as a separate layer, i. e., an epispore; most often thin and barely distinguished in the light microscope, but in some taxa considerably swollen and thus forming a halo.

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Referenced by: Ectosporium, Epispore, Gelatinous, Halo, Mucilaginous Sheath, Perispore

Resources: Flora Australia Fungi