Mag. 400x
Also seen in a water sample taken from this same pond on 7/15/2021 (identification made by phycologist Geraldo Ramos), https://www.inaturalist.org/observations/87490656.
For a reference image, see Fig. 2 in the following, https://www.researchgate.net/publication/320283005_Novos_registros_de_taxons_dos_generos_Euastrum_Ehrenb_ex_Ralfs_e_Micrasterias_C_Agardh_ex_Ralfs_Zygnematophyceae_Desmidiaceaepara_a_Bahia_e_o_Brasil https://www.inaturalist.org/observations/87490656.

• A water sample was taken on 08/10/2022 from pond-edge using a 10µ dip net to enrich for microbes. Air temp. 82°F.