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Staurastrum sibiricum Desmid Species Outer Hebrides

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Phylum: Charophyta   Family: Desmidiaceae

Staurastrum sibiricum O. Borge 1891

First described and illustrated by Borge (1891: 9, fig. 4). Similar in shape to Staurastrum pachyrhynchum but smaller.
Cell dimensions: L: 13-25 µm; B: 15-24 µm; Is: 8-10-5 µm.
Described as an acidophile, but possibly more tolerant of circumneutral waters. A rare Arctic species of little-known distribution in Scotland.

References: 
Borge, O. (1891). Ett litet bidrag till Sibirens Chlorophycé-Flora.
Coesel, P.F.M. & Meesters, K.J. (2013).. European Flora of the Desmid Genera Staurastrum and Staurodesmus.
West, W. & West, G.S. (1912).. A Monograph of the British Desmidiaceae, Volume 4.

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