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Gayralia oxysperma (Kütz.) K.L.Vinog.
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Gayralia oxysperma f. wittrockii (Bornet) P.C.Silva, 1996
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Gayralia oxysperma subsp. wittrockii (Bornet) P.C.Silva, 1996
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Monostroma crepidinium Farlow
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Monostroma orbiculatum Thur., 1854
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Monostroma oxycoccum (Kütz.) Thuret
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Monostroma oxyspermum (Kütz.) Doty
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Monostroma oxyspermum f. orbiculatum (Thur.)
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Monostroma oxyspermum f. wittrockii (Bornet) Feldmann & Hamel, 1964
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Monostroma tubiforme Iwamoto, 1960
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Monostroma wittrockii Bornet
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Ulva oxycocca Kutzing
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Ulva oxysperma Kütz.
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Ulva oxysperma f. wittrockii (Bornet) Bliding
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Ulva oxysperma subsp. wittrockii (Bornet) Bliding
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Ulvaria oxysperma (Kütz.) Bliding
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Ulvaria oxysperma f. wittrockii (Bornet) Bliding
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Ulvaria oxysperma subsp. wittrockii (Bornet) Bliding