Phylum: Charophyta Family: Desmidiaceae
Xanthidium bifidum (L.A. de Brébisson) G. Deflandre 1929
First described and illustrated by Brébisson (1856: 135, pl. 1: 19) as Arthrodesmus bifidus. It was later moved to its current genus by Deflandre (1929: 137).
Cell dimensions: L: 10-15 µm; B: 10-15 µm; Is: 5-6.2 µm.
Infrequently recorded in shallow lochs and pools in Scotland but possibly overlooked because of its small size.
References:
de Brébisson, L.A. (1856).. Liste des Desmidiées, observées en Basse-Normandie.
Deflandre, G. (1929). Notes sure l'Arthrodesmus impar (Jacobsen) Grönbl. et ses veriations, suivies de remarques sur la delimitation des genres Arthrodesmus et Xanthidium.