Spirotaenia condensata, a species with a ribbon-shaped parietal chloroplast which is twisted into a helix. This is in contrast to genus Tortitaenia which has a central chloroplast with radiating spiral ridges. Focus plane on the periphery of the cell which gives the impression that there are two chloroplasts. Some pyrenoids are visible. The bacteria-free space around the cell gives evidence for a mucous sheath around the cell. |
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| Spirotaenia condensata, same specimen, optical transect of the center of the cell. |
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| Spirotaenia condensata, crop of the above image showing the elliptic pyrenoids protruding the chloroplast. |
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| Spirotaenia condensata, another specimen from (2), which is approached by a Vampyrella rhizopod. (2) |
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| Spirotaenia condensata, another specimen from (3). |
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| See also >>> Spirotaenia endospira |
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| Location: Paradieswiese, Tirol, Austria (1); Ahrntal, South Tyrol, pond (2); Wahner Heide near Cologne, trench with Sphagnum (3) |
| Habitat: Periphyton (1); (2); (3); |
| Date: 09.10.2014 (1); 09.10.2014 (2); 30.11.2017 (3) |
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