Diatoms of North AmericaDiatoms of North America

Glossary

Like the rest of this website, the glossary is a work in progress. If we’ve missed a term, please contact us to let us know the term and references.

Mantle

The mantle is the downturned side of the valve surrounding the valve face. The mantle is visible when a frustule is viewed in girdle view.

Citations

Mantle2
Image Credit: Marina Potapova
The mantle of Aulacoseira alpigena is ornamented, while the valve face has marginal areolae.
Mantle
Image Credit: Marina Potapova
The mantle of Stephanodiscus yellowstonensis is rounded at the junction of the mantle and the face.
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