Description of a new desmid species, Cosmarium pankakoskiiforme, from the Outer Hebrides, Scotland, UK

Cosmarium pankakoskiiforme, is currently only known from Loch na Gearrachan, North Uist, Outer Hebrides. In size and morphology, there are some similarities with C. taxichondriforme Eichler & Gutwiński 1894, however it has two pyrenoids per semicell and a different ecology. There are a number of other taxa which may be closely related or possibly synonymous, but a new name has been chosen to avoid further taxonomic confusion.