Phylum: Charophyta Family: Mesotaeniaceae
Netrium elongatum S. Ohtani 1990
Ohtani (1990) gives the habitat in Japan as abandoned paddy fields, ponds and marshes. According to his research, only the variety digitus is associated with Sphagnum bogs. First found in the Outer Hebrides in 2022 from an ephemeral winter lake on machair.
Ohtani, S. (1990) A Taxonomic Revision of the Genus Netrium (Zygnematales, Chlorophyceae).