Cyclotella

Cyclotella are typically small disc centrics without much central ornamentation. Like other centric genera, there can be a noteworthy amount of variation within and between species. However, only C. meneghiniana has been found in Lake Mendota.

C. meneghiniana

Cells are 6.24 - 18.12 µm in diameter.
Rows of striae are 7-8 per 10 µm along the circumference.
Distinct inner and outer areas. Outer ring has pronounced striae, central area is typically smooth or with minimal ornamentation.
Central area may include 1-4 small indents, known as fultoportulae.

For more information, visit diatoms.org here.

A3m1 Cyclotella cf. meneghiniana_edited_edited

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A5m1 Cyclotella meneghiniana_edited

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A3m3 Cyclotella meneghiniana_edited

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Mendota Diatoms

A local field guide to Wisconsin algae

Cyclotella

C. meneghiniana

Cells are 6.24 - 18.12 µm in diameter.

Rows of striae are 7-8 per 10 µm along the circumference.

Distinct inner and outer areas. Outer ring has pronounced striae, central area is typically smooth or with minimal ornamentation.

Central area may include 1-4 small indents, known as fultoportulae.

For more information, visit diatoms.org here.