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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
Genera
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What are diatoms?
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axialcostae2.jpg
Glossary Term
Axial costa
Caption
Light micrographs of
Mastogloia smithii
, at two different focal depths. Each arrow indicates an axial costa.
Credit
B. Van de Vijver
