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.

Fascicle

A fascicle is a group, or bundle, of rows of areolae oriented radially in some centric diatoms.

Citations

Ill2011 41 Steph Niagarae6
Image Credit: Sarah Spaulding
Stephanodiscus niagarae is characterized by fascicles of 2-3 rows of areolae.
Costae
Image Credit: Sarah Spaulding
Detail of S. niagarae, with the costae, or interfascicles, marked in red. The costae separate the fascicles of areolae.
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