Desmidiales and
Zygnematales –
Archaeplastida

Observations on Netrium digitus

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

Netrium digitus (Brébisson ex Ralfs) Itzigsohn & Rothe 1856

Most likely ID: n.a.

Basionym: Penium digitus Brébisson ex Ralfs 1848

Add’l Synonyms: Closterium digitus Ehrenberg 1832
Penium elegans C.Bernard 1908

Sampling date 06/2024. Scale bars indicate 50 µm.

Two images.

First:	Image showing the two chloroplasts with radiating, notched ridges.
Second:	Optical cross-section through the cell showing the axial cores of the chloroplasts with their notched ridges and the cell nucleus with its prominent nucleolus.

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: Wetland Lauchseemoor, Fieberbrunn (Tyrol, Austria)
Latitude: 47.46954439 Longitude: 12.53826499

Microscope Zeiss Universal, camera Olympus OM-D M5 MKII. DOF images.

Sampling date 06/2023. Scale bars indicate 50 µm.

Three images. The cell is in the pre-division stage.

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: Wetland Lauchseemoor, Fieberbrunn (Tyrol, Austria)
Latitude: 47.46954439 Longitude: 12.53826499

Microscope Zeiss Axioplan, camera Olympus OM-D M5 MKII. DOF images.

Sampling date 06/2023. Scale bars indicate 50 µm.

Two images.
The specimen was fixed under cover glass pressure. The line pattern that shows the cell wall under cover glass pressure is interesting!

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: Wetland Lauchseemoor, Fieberbrunn (Tyrol, Austria)
Latitude: 47.46954439 Longitude: 12.53826499

Microscope Zeiss Axioplan, camera Olympus OM-D M5 MKII. DOF images.

Sampling date 09/2010. Scale bar indicates 50 µm.

Cell with lots of fungal sporangia (parasitism)

Place name: Pond situated in the vicinity of Lake Constance (Germany)
Latitude: 47.734945 Longitude: 9.091097

Microscope Zeiss Universal, camera Olympus C7070WZ. DOF image.

Sampling date 04/2007. Scale bars indicate 25 µm.

Two images.

First:	The chloroplasts of Netrium digitus have an axial core with radiating, notched ridges. The pyrenoids are located on the central axes of the two chloroplasts. This DOF image provides a synoptic view of the chloroplast ridges, the nucleus in the center of the cell and cytoplasmic vesicles (see also enlarged detail top left) on the inner cell wall surface (bright circular dots).
Second:	Optical cross-section through the cell showing the axial cores of the chloroplasts with their ridges and the cell nucleus with its prominent nucleolus.

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: Bog near Salzburg (Austria)
Latitude: 48.068516 Longitude: 12.954134

Microscope Zeiss Universal, camera Olympus C7070WZ. 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 Netrium digitus

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