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Phylum: Charophyta   Family: Desmidiaceae

Cosmarium variolatum var. skujae  Croasdale

An acidophile, recorded largely from the north-west. Much larger than the species

Determiner: 
Chris Johnson (first image)
Koos Meesters (other images)

References: 
Coesel & Meesters (2007) Mesotaeniaceae and Desmidiaceae of the European Lowlands
John, Whitton & Brook (2011) The Freshwater Algal Flora of the British Isles

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