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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
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Neidium_sp2_L-9-59_1.jpg
Glossary Term
Secondary side
Caption
Light micrograph of a species of
Neidium
from Iowa. The two arrows indicate the Voigt discontinuities, formed by the incomplete joining of the secondary side during valve formation.
Credit
Steve Main
