Phylum: Charophyta Family: Desmidiaceae
Xanthidium fasciculatum Ehrenberg ex Ralfs 1848
A rare species in the Outer Hebrides. Found in acidic moorland pools and bogs.
References:
Ralfs, J. (1848) The British Desmidieae.
Lenzenweger, R. (1997) Desmidiaceenflora von Österreich, Teil 2.
Coesel, P.F.M. & Meesters, K.J. (2013) European Flora of the Desmid Genera Staurastrum and Staurodesmus.