• Eucheuma J.Agardh, 1847
• Eucheuma acanthocladum (Harvey) J.Agardh, 1876 accepted as Meristotheca gelidium (J.Agardh) E.J.Faye & M.Masuda, 2004
• Eucheuma alvarezii Doty, 1985 accepted as Kappaphycus alvarezii (Doty) Doty ex P.C.Silva, 1996
• Eucheuma alvarezii var. ajakii-assii Doty, 1985
• Eucheuma alvarezii var. tambalang Doty, 1985 accepted as Kappaphycus alvarezii var. tambalang (Doty) comb. ined.
• Eucheuma amakusaense Okamura, 1902
• Eucheuma arnoldii Weber Bosse, 1928
• Eucheuma arnoldii var. alcyonida Kraft, 1972
• Eucheuma cartilagineum No authority known
• Eucheuma cervicorne Weber Bosse, 1928
• Eucheuma chondriforme J.Agardh, 1885
• Eucheuma condriforme J.Agardh
• Eucheuma cottonii Weber-van Bosse, 1913 accepted as Kappaphycus alvarezii (Doty) Doty ex P.C.Silva, 1996
• Eucheuma cottonii var. erecta No authority known accepted as Kappaphycus alvarezii (Doty) Doty ex P.C.Silva, 1996
• Eucheuma crassum Zanardini, 1878
• Eucheuma crustiforme Weber-van Bosse, 1928
• Eucheuma cupressoideum Weber Bosse, 1928 accepted as Eucheuma arnoldii Weber Bosse, 1928
• Eucheuma deformans P.W.Gabrielson & Kraft
• Eucheuma denticulatum (N.L.Burman) Collins & Hervey, 1917
• Eucheuma denticulatum var. endong Trono & Ganzon-Fortes, 2012
• Eucheuma echinocarpum J.E.Areschoug, 1854 accepted as Meristotheca gelidium (J.Agardh) E.J.Faye & M.Masuda, 2004
• Eucheuma edule (Kützing) Weber Bosse, 1926
• Eucheuma gelatinae (Esper) J.Agardh, 1847 accepted as Betaphycus gelatinus (Esper) Doty ex P.C.Silva, 1996
• Eucheuma gelidium (J.Agardh) J.Agardh, 1847 accepted as Meristotheca gelidium (J.Agardh) E.J.Faye & M.Masuda, 2004
• Eucheuma horizontale Weber-van Bosse, 1928
• Eucheuma horridum J.Agardh, 1852
• Eucheuma horridum f. radicans Børgesen, 1943
• Eucheuma inerme F.Schmitz, 1895 accepted as Kappaphycus inermis (F.Schmitz) Doty ex H.D.Nguyen & Q.N.Huynh, 1995
• Eucheuma isiforme (C.Agardh) J.Agardh, 1847 accepted as Eucheumatopsis isiformis (C.Agardh) Núñez-Resendiz, Dreckmann & Sentíes, 2019
• Eucheuma isiforme var. denudatum D.P.Cheney, 1988 (uncertain)
• Eucheuma johnstonii Setchell & Gardner, 1924
• Eucheuma jugatum J.Agardh, 1892
• Eucheuma kraftianum Doty, 1988
• Eucheuma leeuwenii Weber-van Bosse, 1928
• Eucheuma muricatum (S.G.Gmelin) Weber-van Bosse, 1928 accepted as Eucheuma denticulatum (N.L.Burman) Collins & Hervey, 1917
• Eucheuma muricatum f. depauperatum Weber-van Bosse, 1928
• Eucheuma nodulosum Areschoug, 1854
• Eucheuma nudum J.Agardh, 1852
• Eucheuma odontophorum Børgesen, 1943
• Eucheuma odontophorum var. mauritianum (Børgesen) Doty ex P.C.Silva, 1996
• Eucheuma okamurae Yamada, 1936 accepted as Kappaphycus cottonii (Weber Bosse) Doty ex P.C.Silva, 1996
• Eucheuma papulosum (Montagne) Cotton & Yendo, 1914 accepted as Meristotheca papulosa (Montagne) J.Agardh, 1872
• Eucheuma perplexum Doty, 1988
• Eucheuma platycladum F.Schmitz, 1895
• Eucheuma procrusteanum Kraft, 1970 accepted as Kappaphycus procrusteanus (Kraft) Doty, 1988
• Eucheuma schramii (P.L.Crouan & H.M.Crouan) J.Agardh, 1892 accepted as Meristotheca gelidium (J.Agardh) E.J.Faye & M.Masuda, 2004
• Eucheuma serra (J.Agardh) J.Agardh, 1847
• Eucheuma sonderi Harvey
• Eucheuma speciosum (Sonder) J.Agardh, 1852 accepted as Betaphycus speciosus (Sonder) Doty ex P.C.Silva, 1996
• Eucheuma speciosum var. mauritianum Børgesen, 1943 accepted as Eucheuma odontophorum var. mauritianum (Børgesen) Doty ex P.C.Silva, 1996
• Eucheuma spinosum J.Agardh, 1847 accepted as Eucheuma denticulatum (N.L.Burman) Collins & Hervey, 1917
• Eucheuma striatum F.Schmitz, 1895 accepted as Kappaphycus striatus (F.Schmitz) Doty ex P.C.Silva, 1996
• Eucheuma uncinatum Setchell & Gardner, 1924 accepted as Tacanoosca uncinata (Setchell & N.L.Gardner) J.N.Norris, P.W.Gabrielson & D.P.Cheney, 2014
• Eucheuma xishaensis Kuang Mei & Xia, 1999
• Eucheumatopsis Núñez-Resendiz, Dreckmann & Sentíes, 2019
• Eucheumatopsis isiformis (C.Agardh) Núñez-Resendiz, Dreckmann & Sentíes, 2019