Tiny Organisms in Aquatic Habitats

Green-colored Algae without Flagella –
Archaeplastida (Part), SAR-Stramenopiles (Part)

Observations on Pediastrum duplex

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

Pediastrum duplex Meyen 1829

Most likely ID: n.a.

Basionym: n.a.

Add’l Synonyms: Pediastrum napoleonis Ralfs ????
                               Oplaria numismaticum Losana 1829
                               Oplaria speciosum Losana 1829
                               Micrasterias duplex (Meyen) Kützing 1834
                               Micrasterias selenaea Kützing 1834
                               Pediastrum tricyclium (Ehrenberg) Hassal 1845
                               Pediastrum pertusum Kützing 1845
                               Pediastrum elegans Hassall 1845
                               Pediastrum selenaea Kützing 1845
                               Pediastrum brachylobum Braun 1855
                               Pediastrum pertusum var. genuinum A.Braun 1855
                               Pediastrum duplex var. reticulatum Lagerheim 1882
                               Pediastrum duplex var. clathratum (A.Braun) Lagerheim 1882
                               Pediastrum duplex var. genuinum (A.Braun) Lagerheim 1882
                               Pediastrum duplex f. genuinum Arnold & Aleksenko 1915

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Two images.

First:

Image showing pyrenoids.
Sampling date 01/2018. Scale bar indicates 25 µm.

Second:Image showing the fine floating processes on the tips of the peripheral cells. In Pediastrum they are made of cellulose.
Sampling date 05/2011. Scale bar indicates 50 µm.

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(1):
Place name: Pond in the forest of Altenholz-Stift (Schleswig-Holstein, Germany) 
Latitude: 54.384913     Longitude: 10.125691

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

(2):
Place name: Creek in Oder valley 100 km north east of Berlin (Germany) 
Latitude: 53.135032     Longitude: 14.348738

Microscope Zeiss Universal, camera Olympus C7070WZ. DOF image.

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Scale bars indicate 10 µm.

Four images.

First:Image showing pyrenoids, nuclei and the floating processes.
Second to fourth:Images showing pyrenoids, nuclei and the floating processes.
The cells of this strain are multinucleate!

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: Protist culture CCAC University Duisburg-Essen (Germany)
Latitude: 51.463807     Longitude: 7.005321

Microscope Zeiss Axioplan, camera Canon EOS 600D. DOF images.

Sample material courtesy of AG Boenigk, University Duisburg-Essen.

© 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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