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Micrasterias rotata Desmid Species Outer Hebrides

Alage Outer Hebrides logo  Algae Outer Hebrides


Phylum: Charophyta   Family: Desmidiaceae

Micrasterias rotata  J. Ralfs 1848

First described and illustrated by Ralfs (1848: 71, pl. 8: 1). West & West (1905: 102) note: “… is not a common species, although very widely distributed.”
Cell dimensions: L: 220-300 µm; B: 190-270 µm; Is: 29-43 µm; L/B: 1.05-1.17.
The status in the Outer Hebrides still reflects the Wests observation. Found in acidic mesotrophic waters such as moorland pools and abandoned peat-cuttings.

References: 
Coesel, P.F.M. & Meesters, K.J. (2023 second edition) Desmids of the Lowlands.
Ralfs, J. (1848) The British Desmidieae.
Ruzicka, J. (1981) Die Desmidiaceen Mitteleuropas, Volume 1, Part 2.
West, W. & West, G.S. (1905) A Monograph of the British Desmidiaceae, Volume 2.

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