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Actinotaenium diplosporum Desmid Species Outer Hebrides

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Phylum: Charophyta   Family: Desmidiaceae

Actinotaenium diplosporum (P.M. Lundell) E. Teiling 1954

First described by Lundell (1871: 83, pl. 5: 7) as Cylindrocystis diplospora, later moved to Actinotaenium diplosporum by Teiling (1954: 411). Cells cylindric with slightly diverging lateral sides and broadly rounded apex. Sinus shallow but obvious in most cells. Chloroplast asteroid with one pyrenoid.
Cell dimensions: L: 50-85 µm; B: 21-40 µm; L/B: 1.80-2.40.
Very scarce acidophile of moorland pools and bogs.

References: 
Coesel, P.F.M. & Meesters, K.J. (2023 second edition) Desmids of the Lowlands.
Lundell, P.M. (1871) De Desmidiaceis, quae in Suecia inventae sunt, observationes criticae.
Ruzicka, J. (1981) Die Desmidiaceen Mitteleuropas, Volume 1, Part 2.
Teiling, E. (1954) Actinotaenium, genus Desmidiacearum resuscitatum.

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