Cosmarium quadratum f.
Compare with: Cosmarium quadratum; Cosmarium cucumis var. magnum
Compare with: Cosmarium quadratum; Cosmarium cucumis var. magnum
Remarks: The specimen depicted below from Switzerland and the United States (WA) have sizes that lies between that of Cosmarium quadratum and the similar shaped Cosmarium cucumis var. magnum .
North America
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| 2016044-010 Front view USA (WA) Sample Robin Matthews |
2016045-016 Front view USA (WA) Sample Robin Matthews |
Europe
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| 2016028-002 Front view Switzerland Sample Wil Leurs |