Class Conjugatophyceae Engl. (1892) see Class Zygnematophyceae Round ex Guiry (2013) Order Zygnematales - filamentous conjugates and saccoderm desmids Family Zygnemataceae (Meneghini) Kützing (1843) Genus Lloydina A. Ahmad & M. Goldstein (1972) [monotypic] Lloydina kankensis (Ahmad & Goldstein) Ahmad & Goldstein