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.

Attenuate

Attenuate refers to the shape of a valve apex that is gradually tapered to a slender point.

Alternative Terms

drawn-out
Ulacus 1093 60 4
This valve of Ulnaria acus has attenuate apices. Scale bar = 10 µm.
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