| Cosmarium speciosum var rostafinskii; a small species with one pyrenoid per semicell; focus plane on the center of the cell. (2) |
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| Cosmarium speciosum var rostafinskii; focus plane on the cell surface. (2) |
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| Cosmarium speciosum var rostafinskii; another specimen from (2) |
| see also >>> Cosmarium speciosum |
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| Location: Hattingen Wodantal, puddle (1); Hatt. Oberstüter; staircase |
| Habitat: periphyton/ detritus(!) moss on concrete (2) |
| Date: 06.02.2016; 08.02. 2016 (2) |
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