Phylum: Chlorophyta   Family: Oocystaceae

Trochiscia reticularis (P.F. Reinsch) A. Hansgirg 1888

First described and illustrated by Reinsch (1886: 241, pl. 11: figs 12, 14) as Acanthococcus reticularis. It was soon after move to its current position by Hansgirg (1888: 129). Cells spherical covered in polygonal ridges.
Cell dimensions: D: 13-32 µm.
Scarcely recorded but probably more common. Found in pools and lochans with a fairly neutral pH.

References: 
Hansgirg, A. (1888). Ueber die Süsswasseralgen-Gattungen Trochiscia Ktz. (Acanthococcus Lagrh., Glochiococcus De-Toni) und Tetraëdron Ktz. (Astericium Corda, Polyedrium Näg., Cerasterias Reinsch).
John, D.M., Whitton, B.A. & Brook, A.J. (2011 second edition). The Freshwater Algal Flora of the British Isles.
Reinsch, P.F. (1886). Ueber das Palmellaceeen genus Acanthococcus.