Cosmarium cucumis var. magnum Raciborski
Reference: Coesel & Meesters 2007
Synonym: Cosmarium cucumis f. majus Nordstedt
Compare with: Cosmarium f. quadratum; Cosmarium quadratum
Remarks: Ralfs description of the nominate variety is questionable and therefore this taxon should be raised to species level. The depicted specimen from the USA is larger and have a slightly different outline. More specimens must be examined to determine the taxonomic status.

Europe


C0500
2006017006
2006017-006
Front view
Netherlands
C0500
2015056001
C0500
2015056001
C0500
2015056001
2015056-001
Front view
Netherlands
2015056-001
Side view
Netherlands
2015056-001
Side view
Netherlands

North America


C0500
2016044016
C0500
2016044016
2016044-016
Front view
USA (WA)
Sample Robin Matthews
2016044-016
Side view
USA (WA)
Sample Robin Matthews
All photos copyright: © 2009-2022 Alfred van Geest - Send comments to asvg@xs4all.nl