Desmids –
Archaeplastida (Part)

Observations on Euastrum oblongum

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

Euastrum oblongum Greville ex Ralfs 1848

Most likely ID: n.a.

Basionym: n.a.

Add’l Synonyms: Euastrum pecten Ehrenberg 1832
                               Echinella oblonga Greville 1833
                               Micrasterias sinuata L.A.Brébisson 1835
                               Eutomia oblonga (Greville) Harvey 1841
                               Euastrum oblongiforme C.Cramer 1863
                               Euastrum oblongum f. oblongiforme (C.Cramer) G.Rabenhorst 1868
                               Helierella pecten (Ehrenberg) Kuntze 1891
                               Euastrum oblongum var. depauperatum West & G.S.West 1905

Sampling date 06/2023. Scale bars indicate 50 µm (1), 25 µm (2), 10 µm (3).

Three images.

First:	The optical cross section through the cell shows pyrenoids. In the pyrenoids, the cell produces the storage substance starch, which is deposited as a shell around them.
Second:	Synoptic representation of the cell surface.
Third:	Detail: Depiction of the pores (arrow) in the cell wall through which the protective mucilage is deposited. The arrowhead indicates a pit of unknown function.

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 04/2007. Scale bar indicates 25 µm.

Synoptic representation of the cell surface.

Place name: Wetland in the forest Kobernausserwald (Upper Austria)
Latitude: 48.049321 Longitude: 13.409805

Microscope Zeiss Universal, camera Olympus C7070WZ. DOF image.

Sampling date 10/2019. Scale bars indicate 50 µm.

Two images.

First:	Synoptic representation of the cell surface.
Second:	Optical cross-section through the chloroplasts.

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 Waasenmoos Pass Thurn near Mittersil (Tyrol, Austria)
Latitude: 47.30234117 Longitude: 12.41751194

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 Euastrum oblongum

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