Phylum: Charophyta   Family: Desmidiaceae

Cosmarium fictogermanicum F.A.C. Kouwets 2025

Recently renamed from the poorly described C. abbreviatum var. germanicum. A small cell with rounded basal angles and lateral angles with the upper part of the sides slightly concave. The apex is either truncate or slightly retuse.
Cell dimensions: L: 11-15 µm, B: 12.6-17 µm, Is: 4.4-6.5 µm; Th: 7-7.5 µm, L/B: 0.88-0.97.
Found in slightly alkaline to quite acidic habitats. Distribution unknown for the Outer Hebrides because of possible confusion with similar taxa.

References: 
Kouwets, F.A.C. (2025). European Flora of the Desmid Genus Cosmarium.