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Euastrum cuneatum Desmid Species Outer Hebrides

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Phylum: Charophyta   Family: Desmidiaceae

Euastrum cuneatum E. Jenner 1848

Semicells narrowly pyramidal with straight or minutely sinuous sides, apex produced and truncate with a deep, closed, median incision. Sinus deep and closed for the most part. Cell wall without protuberances and punctate.
Cell dimensions: L: 87-157 µm; B: 40-69 µm; Is: 13-23 µm; Th: 40-42 µm; L/B: 1.89-2.26.
Found in acidic habitats, especially with Sphagnum. West & West (1905: 26) record it as abundant but today is would seem to be a rare species.

Jenner, E. in 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.