Micrasterias
Desmidiaceae –
Archaeplastida

Observations on Micrasterias jenneri

Protisten / Protisten.de – created by Wolfgang Bettighofer / Algae green-colored (2: Desmidiaceae): Micrasterias / Micrasterias jenneri

Position in the EOL taxonomic tree. Please click on the tree view below to access EOL (Encyclopedia of Life).

Micrasterias jenneri Ralfs 1848

Most likely ID: n.a.

Basionym: n.a.

Add’l Synonyms: Micrasterias jenneri var. simplex West 1890
Micrasterias jenneri f. brasiliensis Børgesen 1891
Micrasterias auclairii Rochou d’Aubert 1910

Sampling date 06/2025. Scale bars indicate 25 µm (1, 3–7), 5 µm (2).

Seven images. Optical journey into the cell.

First:	Synoptic representation of the cell wall structure. The granules visible on the surface do not represent cell wall structuring, but are patches of the mucilaginous sheath.
Second:	Zoom-in showing the tiny cell wall pores. The gelatinous mass enveloping the cell is transported outwards through these pores.
Third to seventh:	Optical cross-section showing parts of the chloroplasts and several circular, luminous structures, spherical assimilate bodies with storage lipids (oleosomes).

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 50 µm.

Four images.

First:	Synoptic representation of parts of the cell wall structure. The granules visible on the surface do not represent cell wall structuring, but are patches of the mucilaginous sheath.
Second to fourth:	Optical cross-section showing chloroplasts, the central nucleus with nucleoli and several circular, luminous structures, spherical assimilate bodies with storage lipids (oleosomes).

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 50 µm.

Three brightfield images.

First:	Synoptic representation of parts of the cell wall structure. The granules visible on the surface do not represent cell wall structuring, but are patches of the mucilaginous sheath.
Second and third:	Optical cross-section showing chloroplasts, the central nucleus with nucleoli and several circular, luminous structures, spherical assimilate bodies with storage lipids (oleosomes).

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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Observations on Micrasterias jenneri

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