- Gayralia oxysperma (Kütz.) K.L.Vinog.

- Gayralia oxysperma f. wittrockii (Bornet) P.C.Silva, 1996

- Gayralia oxysperma subsp. wittrockii (Bornet) P.C.Silva, 1996

- Monostroma crepidinium Farlow

- Monostroma orbiculatum Thur., 1854

- Monostroma oxycoccum (Kütz.) Thuret

- Monostroma oxyspermum (Kütz.) Doty

- Monostroma oxyspermum f. orbiculatum (Thur.)

- Monostroma oxyspermum f. wittrockii (Bornet) Feldmann & Hamel, 1964

- Monostroma tubiforme Iwamoto, 1960

- Monostroma wittrockii Bornet

- Ulva oxycocca Kutzing

- Ulva oxysperma Kütz.

- Ulva oxysperma f. wittrockii (Bornet) Bliding

- Ulva oxysperma subsp. wittrockii (Bornet) Bliding

- Ulvaria oxysperma (Kütz.) Bliding

- Ulvaria oxysperma f. wittrockii (Bornet) Bliding

- Ulvaria oxysperma subsp. wittrockii (Bornet) Bliding