Male Fern (Dryopteris filix-mas) wani nau'i ne na manya, fern na shekara-shekara wanda ke tsiro a cikin danshi, wurare masu inuwa a cikin yawancin Arewacin Hemisphere. Ana siffanta shi da dogayen gashin fuka-fukan sa wanda zai iya kaiwa tsayin taku 6, da kuma iya samar da kusoshi a kasan ganyen sa. A cikin magungunan jama'a, an yi amfani da fern na namiji a matsayin maganin cututtuka na hanji, kuma an yi amfani da tushensa wajen samar da vermifuge, nau'in maganin da ake amfani da shi don fitar da tsutsotsi na hanji.