Phylum: Charophyta Family: Mesotaeniaceae
Netrium elongatum S. Ohtani 1990
Ohtani (1990) gives the habitat in Japan as abandoned paddy fields, ponds and marshes. First found in the Outer Hebrides in 2023 from a granite depression subject to desiccation.
References:
Ohtani, S. (1990) A Taxonomic Revision of the Genus Netrium (Zygnematales, Chlorophyceae).