Cosmarium
Desmidiaceae –
Archaeplastida
Observations on Cosmarium meneghinianum
Position in the EOL taxonomic tree. Please click on the tree view below to access EOL (Encyclopedia of Life).
Cosmarium meneghinianum (Nägeli) Kouwets 2025
Most likely ID: n.a.
Basionym: Dysphinctium meneghinianum Nägeli 1849
Add’l Synonyms: n.a.
Sampling date 06/2025. Scale bars indicate 25 µm.
Six brightfield images.
Note:
The shape of this species is very similar to Cosmarium connatum and is best distinguished by its size.
C. meneghinianum: L. 63–75 µm, Br. 45–53 µm, I. 38–41 µm,
C. connatum: L. 85–100 µm, Br. 60–75 µm, I. 45–60 µm.
Furthermore, the sinus of C. meneghinianumis less deeply incised than that of C. connatum.
| First: | Synoptic representation of the cell surface showing cell wall pores (upper cell halve) and the minute punctation. |
| Second: | First optical cross section showing cell wall pores and chloroplast wings. |
| Third to fifth: | Optical cross sections showing chloroplast wings. |
| Sixth: | Optical cross-section showing pyrenoids. |
Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!
Place name: Moor called Schwemm near Walchsee (Tyrol, Austria)
Latitude: 47.657707 Longitude: 12.299540 Elevation: 669 m
Microscope Zeiss Axioplan, camera Olympus OM-D M5 MKII. DOF images.
Sampling date 06/2025. Scale bars indicate 25 µm.
Six DIC images.
| First: | Synoptic representation of the cell surface showing cell wall pores and the minute punctation. |
| Second: | First optical cross section showing cell wall pores. |
| Third to fifth: | Optical cross sections showing chloroplast wings. |
| Sixth: | Optical cross-section showing the pyrenoids and the nucleus, which is unusually positioned slightly above the cell center. |
Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!
Place name: Moor called Schwemm near Walchsee (Tyrol, Austria)
Latitude: 47.657707 Longitude: 12.299540 Elevation: 669 m
Microscope Zeiss Axioplan, camera Olympus OM-D M5 MKII. DOF images.
© Wolfgang Bettighofer,
images under Creative Commons License V 3.0 (CC BY-NC-SA).
For permission to use of (high resolution) images please contact postmaster@protisten.de.
