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.
Radiate
Striae that lean away from the central nodule are radiate, with the sternum as the origin. Radiate striae may occur throughout the valve, only at the valve center, or only at the valve apices.
In contrast, striae are convergent if they lean toward the central nodule, with the sternum as the origin.
Alternative Terms
- divergent
Image Credit: Sarah Spaulding
Image Credit: Marina Potapova
Image Credit: Sarah Spaulding
The striae of this Cavinula species are slightly radiate.
Image Credit: Marina Potapova
The striae of Navicula angusta are radiate near the center of the valve, becoming convergent at the ends.