Juncus articulatus wani nau'in tsire-tsire ne wanda aka fi sani da rush haɗin gwiwa ko haɗin gwiwa. Yana cikin dangin Juncaceae kuma ana siffanta shi da siriri mai tushe, waɗanda aka haɗe kuma suna da ganyen cylindrical. Kalmar "articulatus" a cikin sunan kimiyya tana nufin gaskiyar cewa tushen ya rabu ko kuma a hade.
