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Staurastrum cristatum var. oligacanthum Desmid Species Outer Hebrides

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Phylum: Charophyta   Family: Desmidiaceae

Staurastrum cristatum var. oligacanthum  (Br√©bisson ex W. Archer) Coesel & Meesters

Differs from the nominate in having short slightly open sinuses before becoming wide open. The lateral angles are markedly produced. The varietal name means little or few spines. Distribution in the Outer Hebrides is unknown but likely to be rare

References: 
Coesel, P.F.M. & Meesters, K.J. (2013) European Flora of the Desmid Genera Staurastrum and Staurodesmus

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