| Closterium lunula, focal plane on the center of the spindle-shaped cell; chloroplasts with scattered pyrenoids. (1) |
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| Closterium lunula, same specimen, focal plane on the ridges of the chloroplasts. (1) |
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| Closterium lunula, starch grains in the ridges of the chloroplasts. (1) |
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| Closterium lunula, same specimen, center of the cell where the two chloroplasts meet. focal plane on the ridges of the chloroplasts. Some fibre-like structures might be the membranes of the thylakoids. (1) |
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| Closterium lunula, same specimen, center of the cell, with vacuolated central body; nucleus not visible (2) |
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| Closterium lunula, finely striated cell wall(≈ 17 striae in 10 µm) without girdle bands or pseudo-girdle bands (2) |
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| Closterium lunula, part of a compressed chloroplast where the chloroplast membrane is destroyed and therefore the content escapes. Starch grains around pyrenoids. (2) |
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| Closterium lunula, terminal vacuole with several crystals of Barium sulfate (1) |
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Location (1); (2): Henrichsteich, Hattingen, NRW, Germany, pond |
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| Habitat (1); (2): plankton-sample with algae and detritus (click image to enlarge >>>) |
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| Date (1); (2): 11.03.2023 (1); 14.03.2023 (2) |
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