Cosmarium
Desmidiaceae –
Archaeplastida
Observations on Cosmarium meneghinianum
Protisten / Protisten.de – created by Wolfgang Bettighofer / Algae green-colored (2: Desmidiaceae): Cosmarium / 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.
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New items
cinctum
pulchrum
melicerta
lunatus
brebissonii
montanum
directum
truncatum
vestitum
var. vestitum
meneghinianum
didelta
furcata
jenneri
radiosa
ventricosum
insigne
cucurbita
fimbriata
cucurbita
wailesii
filifera
brightwellii






















