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Diatoms of the United States is now known as Diatoms of North America.
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Glossary terms starting with "b"


A structure that is divided into two branches.



Pennate diatoms having a raphe on each valve. Examples of biraphid genera include Amphora, Epithemia, Gomphonema, Navicula, and Mastogloia. See also araphid and monoraphid.

Biseriate - doubly punctate

A stria having two rows of areolae.