| Name | Author | Source | Citation | Year |
|---|
| Acrochaetium eastwoodiae ('Eastwoodae') | (Setchell & N.L. Gardner) Papenfuss | Univ. Calif. Publ. Bot. | 18: 306 | 1945 |
| Audouinella seriaspora | (E.Y. Dawson) Garbary | Biblioth. Phyc. | 77: 170 | 1987 |
| Ceramium horridulum | P.C. Silva | Taxon | 21: 204 | 1972 |
| Chromastrum seriasporum | (E.Y. Dawson) Stegenga & Mulder | Acta Bot. Neerl. | 28: 305 | 1979 |
| Corallina vancouveriensis var. lycopodioides | (W.R. Taylor) E.Y. Dawson | Allan Hancock Pacific. Exped. | 17: 129 | 1953 |
| Cystophora brandegeei | (Setchell & N.L. Gardner) E.Y. Dawson | Rev. Soc. Mex. Hist. Nat. | 13: 119 | 1953 |
| Dermocarpa clavata | (Setchell & N.L. Gardner) Geitler | Rabenhorst's Krypt.-Fl. Deutschl., 2.Aufl., | 14: 1173 [legend to fig. 779] | 1932 |
| Dermocarpella clavata | (Setchell & N.L. Gardner) P.H. Hô | Rong bien Vietnam: | 16 | 1969 |
| Dilophus crenulatus | (J. Agardh) Nizamuddin & Gerloff | Nova Hedwigia | 31: 867 | 1980 |
| Gracilaria tepocensis | (E.Y. Dawson) E.Y. Dawson | Pac. Nat. | 2: 211 | 1961 |
| Gymnogongrus gigartinoides | (J. Agardh) Kützing | Sp. algarum: | 789 | 1849 |
| Haliptilon gracile var. verticillatum ('verticillata') | (E.Y. Dawson) Garbary & Johansen | J. Phycol. | 18: 218 | 1982 |
| Haliptilon janioides | (E.Y. Dawson) Garbary & Johansen | J. Phycol. | 18: 218 | 1982 |
| Hypnophycus pannosus | (J. Agardh) Kuntze | Rev. Gen. Pl. | 2: 900 | 1891 |
| Nematoradaisia laminariae | (Setchell & N.L. Gardner) Geitler | Beih. Bot. Centralbl. | 41, Abt. II: 242 | 1925 |
| Neoagardhiella coulteri | (Harvey) P.C. Silva | Proc. Eighth Int. Seaweed Symp. [Bangor 1974]: | 487 | 1981 |
| Neurocarpus zonarioides | (Farlow) Howe | Mem. Torr. Bot. Club | 15: 71 | 1914 |
| Nienburgia borealis | (Kylin) Kylin | K. Fysiogr. Sällsk. Lund Förh. | 5{23}: 1 | 1935 |
| Oscillatoria pseudoplatensis | Bourrelly | Alg. Eau Douce | 3: 434, footnote | 1970 |
| Palmaria palmata f. mollis | (Setchell & N.L. Gardner) Guiry | Syesis | 8: 258 | 1976 |
| Peyssonnelia hancockii | (E.Y. Dawson) Denizot | Alg. Florid. Encrout.: | 135, 310 | 1968 |
| Phormidium anabaenoides | Drouet | Madroño | 16: 108 | 1961 |
| Phrix gregaria ('gregarium') | (E.Y. Dawson) J.G. Stewart | Phycologia | 13: 147 | 1974 |
| Phycodendrum sinclairii | (Harvey ex J. Hooker & Harvey) Kuntze | Rev. Gen. Pl. | 3{3}: 420 | 1898 |
| Platythalia brandegeei | (Setchell & N.L. Gardner) Womersley | Austral. J. Bot. | 12: 104 | 1964 |
| Platythamnion reversum | (Setchell & N.L. Gardner) Kylin | Lunds Univ. Årsskr. N.F. Avd. 2, | 21{9}: 54 | 1925 |
| Plocamium asplenioides | (Esper) Lamouroux | Essai: | 50 (Ann. Mus. 20: 138) | 1813 |
| Plumaria asplenioides | (Esper) Ruprecht | Alg. Ochot.: | 143 [Tange Ochotsk. Meer.: 335] | 1850 |
| Plumaria californica | (Ruprecht ex Harvey) Kuntze | Rev. Gen. Pl.: | 2: 911 | 1891 |
| Plumaria hypnoides ('hypnodes') | (Harvey) Kuntze | Rev. Gen. Pl.: | 2: 911 | 1891 |
| Plumaria tenuis | (Kylin) Doty | Farlowia | 3: 188 | 1947 |
| Polyporolithon parcum | (Setchell & Foslie) L.R. Mason | Univ. Calif. Publ. Bot. | 26: 318 | 1953 |
| Pringsheimiella marchantiae ('Marchantae') | (Setchell & N.L. Gardner) O.C. Schmidt & Petrak | Hedwigia | 74: 29 | 1934 |
| Prionitis abbreviata var. guaymasensis | (E.Y. Dawson) E.Y. Dawson | Los Angeles County Mus. Contrib. Sci. | 27: 25 | 1959 |
| Psammophyllum californicum | (J. Agardh) P.C. Silva & R.L. Moe in Silva apud T.J. Conomos (ed.). | San Francisco Bay: the urbanized estuary: | 330 | 1979 |
| Pseudolithophyllum grumosum | (Foslie) Me. Lemoine | Bull. Soc. Sci. Mat. Maroc | 4: 122, footnote | 1924 |
| Pterochondria pygmaea | (Setchell) Hollenberg | Bull. Torrey Bot. Club | 69: 533 | 1942 |
| Pterocladia pyramidalis ('pyramidale') | (N.L. Gardner) E.Y. Dawson | Madroño | 8: 93 | 1945 |
| Pterosiphonia bipinnata var. robusta | (N.L. Gardner) M.S. Doty | Farlowia | 3: 198 | 1947 |
| Pterosiphonia plumula | (J. Agardh) Collins in Collins, Holden, & Setchell | Phyc. Bor.-Amer.: | 1798 [erratum label] | 1912 |
| Pterosiphonia pygmaea | (Setchell) Kylin | Lunds Univ. Årsskr. N.F. Avd. 2, | 37{2}: 38 | 1941 |
| Pterosiphonia woodii | (Harvey) Falkenberg | Rhodomel. Neapel: | 274 | 1901 |
| Pterota asplenioides | (Esper) Cramer | Neue Denkschr. Schweiz. Ges. Naturw. | 20{Art. 5}: 46, 113 | 1863 |
| Pterota californica | (Ruprecht ex Harvey) Cramer | Neue Denkschr. Schweiz. Ges. Naturw. | 20{Art. 5}: 49, 114 | 1863 |
| Pterothamnion plumula | (J. Agardh) Collins in Collins, Holden, & Setchell | Phyc. Bor.-Amer.: | 1798 | 1911 |
| Radaisiella subimmersa | (Setchell & N.L. Gardner) Geitler | Beih. Bot. Centralbl. | 41, Abt. II: 242 | 1925 |
| Rhabdonia coulteri | (Harvey) Harvey | Ner. bor.-amer. | 2: 154 | 1853 |
| Rhodocallis asplenioides | (Esper) Kützing | Bot. Zeit. | 5{3}: 36 | 1847 |
| Rhodochorton dictyotae | (F.S. Collins) K.M. Drew | Univ. Calif. Publ. Bot. | 14: 190 | 1928 |
| Rhodochorton pacificum | (Kylin) K.M. Drew | Univ. Calif. Publ. Bot. | 14: 169 | 1928 |
| Rhodochorton tenuissimum | (Collins) K.M. Drew | Univ. Calif. Publ. Bot. | 14: 170 | 1928 |
| Rhodoglossum affine | (Harvey) Kylin | Lunds Univ. Årsskr. N.F. Avd. 2, | 24{4}: 49 | 1928 |
| Rhodoglossum roseum | (Kylin) G.M. Smith | Amer. J. Bot. | 30: 216 | 1943 |
| Rhodymenia gardneri | (Setchell) Kylin | Lunds Univ. Årsskr. N.F. Avd. 2, | 21{9}: 41 | 1925 |
| Ricardia saccata | (J. Agardh) Kylin | Lunds Univ. Årsskr. N.F. Avd. 2, | 24{4}: 94 | 1928 |
| Sarcophyllis pygmaea | (Setchell) Setchell in Setchell & Gardner, | Univ. Calif. Publ. Bot. | 1: 355 | 1903 |
| Scagelia corallina var. occidentalis ('occidentale') | (Kylin) Hansen & Scagel | Bull. Torrey Bot. Club | 108: 211 | 1981 |
| Schizomeris constricta | (Setchell & N.L. Gardner) Beger & Knebel in Knebel | Hedwigia | 75Z: 54 | 1935 |
| Sorella divaricata | (Setchell & N.L. Gardner) G.J. Hollenberg | Amer. J. Bot. | 30: 578 | 1943 |
| Spongomorpha coalita | (Ruprecht) Collins | Tufts Coll. Stud. (Sci.) | 2: 361 | 1909 |
| Stolonophora brandegeei | (Setchell & N.L. Gardner) Nizamuddin | Phycologia | 8: 3 | 1969 |
| Tayloriella borealis | (E.Y. Dawson) E.Y. Dawson | Nova Hedwigia | 6: 416 | 1963 |
| Titanoderma dispar | (Foslie) Woelkerling, Chamberlain, & Silva | Phycologia | 24: 333 (table 2) | 1985 |
| Tokidaea serrata | (M.J. Wynne) Lindstrom & M.J. Wynne | Syesis | 14: 42 | 1982 |
| Tylotus cunninghamii | (J. Agardh) Kylin | Lunds Univ. Årsskr. N.F. Avd. 2, | 37{2}: 22 | 1941 |
| Vertebrata baileyi | (Harvey) Kuntze | Rev. Gen. Pl. | 2: 928 | 1891 |
| Vertebrata verticillata | (Harvey) Kuntze | Rev. Gen. Pl. | 2: 929 | 1891 |
| Vertebrata woodii | (Harvey) Kuntze | Rev. Gen. Pl. | 2: 929 | 1891 |
| Zanardinula abbreviata var. guaymasensis | (E.Y. Dawson) E.Y. Dawson | Allan Hancock Pacific. Exped. | 17: 279 | 1954 |
| Zanardinula australis | (J. Agardh) Papenfuss | Farlowia | 1: 342 | 1944 |
| Zanardinula lanceolata | (Harvey) De Toni f. | Not. nomencl. alg. | 7: [7] | 1936 |