Halin Zygnema yana nufin wani nau'in filamentous koren algae wanda yake na dangin Zygnemataceae. Waɗannan algae suna da alaƙa da dogayen filaments ɗinsu marasa rassa waɗanda ke ɗauke da chloroplasts kuma suna iya yin photosynthesis. Sunan "Zygnema" ya fito ne daga kalmomin Helenanci "zygon," wanda ke nufin "yoke," da "nema," wanda ke nufin "zaren," yana nufin tsarin kamar karkiya wanda aka kafa lokacin da filaments biyu na algae suka taru a lokacin. haifuwar jima'i.