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Xanthidium tenuissimum Desmid Species Outer Hebrides

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Phylum: Charophyta   Family: Desmidiaceae

Xanthidium tenuissimum 

A rarely recorded desmid, probably overlooked because of it's very small size. Archer's (1864) original find (as Arthrodesmus tenuissimus) was with Sphagnum and this would seem to be the required habitat. The Wests (1912) comment: 'It is very rare, but when it does occur it is often in quantity and generally amongst submerged Sphagnum.'

Archer, W. (1864) Description of two new species of Cosmarium (Corda) of Penium (Bréb.) and of Arthrodesmus (Ehr.).
West, W. & West, G.S. (1912) A Monograph of the British Desmidiaceae, Volume 4.