Seaweeds of California Green Algae

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(draft: Sun Nov 24 15:32:39 2019)

This page provides current names for California seaweed species, including those whose names have changed since the publication of Marine Algae of California (Abbott & Hollenberg 1976). Both former names (1976) and current names are provided. This list is organized by group (green, brown, red algae); within each group are genera and species in alphabetical order. California seaweeds discovered or described since 1976 are indicated by an asterisk.

This is a draft of an on-going project. If you have questions or comments, please contact Kathy Ann Miller, University Herbarium, University of California at Berkeley. [email protected] Green Algae

Blidingia minima (Nägeli ex Kützing) Kylin

Blidingia minima var. vexata (Setchell & N.L. Gardner) J.N. Norris

Former name: Blidingia minima var. subsalsa (Kjellman) R.F. Scagel Current name: Blidingia subsalsa (Kjellman) R.F. Scagel et al.

Kornmann, P. & Sahling, P.H. 1978. Die Blidingia-Arten von Helgoland (Ulvales, Chlorophyta). Helgoländer Wissenschaftliche Meeresuntersuchungen 31: 391-413. Scagel, R.F., Gabrielson, P.W., Garbary, D.J., Golden, L., Hawkes, M.W., Lindstrom, S.C., Oliveira, J.C. & Widdowson, T.B. 1989. A synopsis of the benthic marine algae of British Columbia, southeast Alaska, Washington and Oregon. Phycological Contributions, University of British Columbia 3: vi + 532.

Bolbocoleon piliferum Pringsheim

Bryopsis corticulans Setchell

Bryopsis hypnoides Lamouroux Former name: Bryopsis pennatula J. Agardh Current name: Bryopsis pennata var. minor J. Agardh

Silva, P.C., Basson, P.W. & Moe, R.L. 1996. Catalogue of the benthic marine algae of the Indian Ocean. University of California Publications in Botany 79: 1-1259.

*Bryopsis spp.

*Capsosiphon fulvescens (C. Agardh) Setchell & N.L. Gardner

Garbary, D.J., Golden, L. & Scagel, R.F. 1982. Capsosiphon fulvescens (Capsosiphonaceae, Chlorophyta) rediscovered in the northeast Paciﬁc. Syesis 15: 39-42. Mathieson, A.C. & Hehre, E.J. 1994. A comparison of the marine algae from the Goleta Slough and adjacent open coast of Goleta/Santa Barbara, California with those in the southern Gulf of Maine. Rhodora 96: 207-258.

*Caulerpa taxifolia (Vahl) C. Agardh

Jousson, O., Pawlowski, J., Zaninetti, L., Zechman, F.W., Dini, F., Di Guiseppe, G., Woodﬁeld, R.A., Millar, A. & Meinesz, A. 2000. Invasive alga reaches California. Nature (London) 408: 157-58. Anderson, L.W.J. 2005. California's reaction to Caulerpa taxifolia: a model for invasive species rapid response. Biological Invasions 7: 1003-1016.

Chaetomorpha aerea (Dillwyn) Kützing

Chaetomorpha antennina (Bory) Kützing

Chaetomorpha californica Collins

Chaetomorpha linum (O.F. Müller) Kützing

Chaetomorpha spiralis Okamura

"Chlorochytrium inclusum" Kjellman

Former name: Chlorochytrium porphyrae Setchell & N.L. Gardner Current name: Halochlorococcum porphyrae (Setchell & N.L. Gardner) J.A. West, C.M. Smith & McBride

West, J.A., Smith, C.M. & McBride, D.L. 1988. Observations on the marine unicellular endophyte Chlorochytrium porphyrae (Chlorophyceae). Botanica Marina 31: 299-305.

Former name: Cladophora albida (Hudson) Kützing Current name: Cladophora albida (Nees) Kützing

Silva, P.C., Meñez, E.G. & Moe, R.L. 1987. Catalog of the benthic marine algae of the Philippines. Smithsonian Contributions to Marine Sciences 27: iv + 179.

*Former name: Cladophora amphibia Collins Current name: Wittrockiella amphibia (F.S. Collins) C. Boedeker & G.I. Hansen

Silva, P.C. 1979. The benthic algal ﬂora of central San Francisco Bay. In: San Francisco Bay: the Urbanized Estuary. (Conomos, T.J., ed.), pp. 287- 345. San Francisco: Paciﬁc Division, American Association for the Advancement of Science. Boedeker, C., & G.I. Hansen. 2010. Nuclear rDNA sequences of Wittrockiella amphibia (Collins) comb. nov. (Cladophorales, Chlorophyta) and morphological characterization of the mat-like growth form

Cladophora columbiana Collins

Cladophora elmorei E.Y. Dawson

Cladophora graminea Collins

Cladophora microcladioides Collins

Former name: Cladophora sakaii I.A. Abbott Current name: Lychaete sakaii (I.A. Abbott) M.J. Wynne

Wynne, M.J. 2017. The reinstatement of Lychaete J.Agardh (Ulvophyceae, Cladophoraceae). Notulae Algarum 31: 3. 2017.

Cladophora sericea (Hudson) Kützing

Cladophora stimpsonii Harvey

Former name: Cladophoropsis fasciculatus (Kjellman) Wille Current name: Cladophoropsis fasciculata (Kjellman) Wille

Codiolum gregarium Braun

Codium cuneatum Setchell & N.L. Gardner

*Codium dawsonii P.C. Silva, F. Pedroche, M. Chacana & K.A. Miller

Silva, P.C., Pedroche, F.F., Chacana, M.E. & Miller, K.A. 2014. Validation of the names of two new species of Codium (Chlorophyta, Bryopsidales) from Isla Guadalupe and Rocas Alijos, Paciﬁc Mexico and the southern California Channel Islands, with some remarks on insular endemism. Botanica Marina 57: 243-250.

Former name: Codium fragile (Suringar) Hariot Current name: Codium fragile subsp. californicum (J. Agardh) C.A. Maggs & J. Kelly

Brodie, J., Maggs, C.A. & John, D.M. 2007. Green seaweeds of Britain and Ireland. Pp. [i-v], vi-xii, 1-242, 101 ﬁgs., London: British Phycological Society.

*Former name: Codium fragile subsp. tomentosoides (van Goor) P.C. Silva Current name: Codium fragile subsp. fragile (Suringar) Hariot

Brodie, J., Maggs, C.A. & John, D.M. 2007. Green seaweeds of Britain and Ireland. Pp. [i-v], vi-xii, 1-242, 101 ﬁgs., London: British Phycological Society. Provan, J., Booth, D., Todd, N.P., Beatty, G.E. & Maggs, C.A. 2008. Tracking biological invasions in space and time: elucidating the invasive history of the green alga Codium fragile using old DNA. Diversity and Distributions A Journal of Conservation Biogeography 14: 343-354.

Codium hubbsii E.Y. Dawson

Codium johnstonei P.C. Silva

Codium setchellii N.L. Gardner

Collinsiella tuberculata Setchell & N.L. Gardner

Derbesia marina (Lyngbye) Solier

Derbesia proliﬁca W.R. Taylor Former name: Endophyton ramosum N.L. Gardner Current name: Ulvella ramosa (N.L. Gardner) R. Nielsen, C.J. O'Kelly & B. Wysor

Former name: Enteromorpha clathrata (Roth) Greville Current name: Ulva clathrata (Roth) C. Agardh

Hayden, H.S., Blomster, J., Maggs, C.A., Silva, P.C., Stanhope, M.J. & Waaland, J.R. 2003. Linnaeus was right all along: Ulva and Enteromorpha are not distinct genera. European Journal of Phycology 38: 277-294. Hayden, H.S. & Waaland, J.R. 2004. A molecular systematic study of Ulva (Ulvaceae, Ulvales) from the northeast Paciﬁc. Phycologia 43: 364-382.

Former name: Enteromorpha clathrata var. crinita (Nees) Hauck Current name: Ulva clathrata (Roth) C. Agardh

Former name: Enteromorpha compressa (Linnaeus) Greville Current name: Ulva compressa Linnaeus

Former name: Enteromorpha ﬂexuosa (Roth) J. Agardh Current name: Ulva ﬂexuosa Wulfen

Former name: Enteromorpha linza (Linnaeus) J. Agardh Current name: Ulva linza Linnaeus

Former name: Enteromorpha prolifera (O.F. Müller) J. Agardh Current name: Ulva prolifera O.F. Müller

Former name: Entocladia cingens Setchell & N.L. Gardner Current name: Ulvella cingens (Setchell & N.L. Gardner) R. Nielsen, C.J. O'Kelly & B. Wysor

Nielsen, R., Petersen, G., Seberg, O., Daugbjerg, N., O'Kelly, C.J. & Wysor, B. 2013. Revision of the genus Ulvella (Ulvellaceae, Ulvophyceae) based on morphology and tufA gene sequences of species in culture, with Acrochaete and Pringsheimiella placed in synonymy. Phycologia 5: 37-56. Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2006. Keys to the seaweeds and seagrasses of southeast Alaska, British Columbia, Washington and Oregon. Phycological Contribution 7: iv + 1-209.

Former name: Entocladia codicola Setchell & N.L. Gardner Current name: Ulvella codicola (Setchell & N.L. Gardner) R. Nielsen, C.J. O'Kelly & B. Wysor Nielsen, R., Petersen, G., Seberg, O., Daugbjerg, N., O'Kelly, C.J. & Wysor, B. 2013. Revision of the genus Ulvella (Ulvellaceae, Ulvophyceae) based on morphology and tufA gene sequences of species in culture, with Acrochaete and Pringsheimiella placed in synonymy. Phycologia 5: 37-56. Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181.

Former name: Entocladia viridis Reinke Current name: Ulvella viridis (Reinke) R. Nielsen, C.J. O'Kelly & B. Wysor

Gomontia polyrhiza (Lagerheim) Bornet & Flahault

Former name: Halicystis ovalis (Lyngbye) J.E. Areschoug Current name: Derbesia marina (Lyngbye) Solier

Kornmann, P. 1938. Zur Entwicklungsgeschichte von Derbesia und Halicystis. Planta 28: 464-470.

Former name: Kornmannia zostericola (Tilden) C.V. Bliding Current name: Kornmannia leptoderma (Kjellman) C.V. Bliding

Former name: Lola lubrica (Setchell & N.L. Gardner) A. Hamel & G. Hamel Current name: Rhizoclonium lubricum Setchell & Gardner

Monostroma grevillei (Thuret) Wittrock

Former name: Monostroma oxyspermum (Kützing) M.S. Doty Current name: Gayralia oxysperma (Kützing) R.F. Scagel et al.

Vinogradova, K.L. 1969. K. sistematike poryadka Ulvales (Chlorophyta) s.l.. Botanicheskij Zhurnal SSSR 54: 1347-1355. Scagel, R.F., Gabrielson, P.W., Garbary, D.J., Golden, L., Hawkes, M.W., Lindstrom, S.C., Oliveira, J.C. & Widdowson, T.B. 1989. A synopsis of the benthic marine algae of British Columbia, southeast Alaska, Washington and Oregon. Phycological Contributions, University of British Columbia 3: vi + 532.

Former name: Monostroma zostericola J.E. Tilden Current name: Kornmannia leptoderma (Kjellman) C.V. Bliding

Bliding, C. 1969 [1968]. A critical survey of European taxa in Ulvales, Part II. Ulva, Ulvaria, Monostroma, Kornmannia. Botaniska Notiser 121: 535- 629.

*Palmophyllum umbracola Nelson & Ryan

Nelson, W.A. & Ryan, K.G. 1986. Palmophyllum umbracola sp. nov. (Chlorophyta) from offshore islands of northern New Zealand. Phycologia 25: 168-177.

Former name: Percursaria dawsonii G.J. Hollenberg & I.A. Abbott Current name: Blidingia dawsonii (G.J. Hollenberg & I.A. Abbott) S.C. Lindstrom, L.A. Hanic & L. Golden

Lindstrom, S.C., Hanic, L.A. & Golden, L. 2006. Studies of the green alga Percursaria dawsonii (Blidingia dawsonii comb. nov. Kornmanniaceae, Ulvales) in British Columbia. Phycological Research 54: 40-56.

Percursaria percursa (C. Agardh) Rosenvinge

Pilinella californica G.J. Hollenberg

Former name: Prasinocladus ascus Proskauer Current name: Tetraselmis ascus (Proskauer) R.E. Norris, Hori & Chihara

Norris, R.E., Hori, T. & Chihara, M. 1980. Revision of the genus Tetraselmis (Class Prasinophyceae). Botanical Magazine, Tokyo 93: 317- 339.

Former name: Prasinocladus marinus (Cienkowski) Waern Current name: Tetraselmis marina (Cienkowski) R.E. Norris, Hori & Chihara

Norris, R.E., Hori, T. & Chihara, M. 1980. Revision of the genus Tetraselmis (Class Prasinophyceae). Botanical Magazine, Tokyo 93: 317- 339. Prasiola meridionalis Setchell & N.L. Gardner

Former name: Pseudodictyon geniculatum N.L. Gardner Current name: Ulvella geniculata (N.L. Gardner) C.J. O'Kelly & B. Wysor

O'Kelly, C.J. 1983. Observations on marine Chaetophoraceae (Chlorophyta). IV. The structure, reproduction, and life history of Acrochaete geniculata (Gardner) comb. nov. Phycologia 22: 13-21. Nielsen, R., Petersen, G., Seberg, O., Daugbjerg, N., O'Kelly, C.J. & Wysor, B. 2013. Revision of the genus Ulvella (Ulvellaceae, Ulvophyceae) based on morphology and tufA gene sequences of species in culture, with Acrochaete and Pringsheimiella placed in synonymy. Phycologia 5: 37-56.

Former name: Pseudopringsheimia apiculata Setchell & N.L. Gardner Current name: Acrochaete apiculata (Setchell & N.L. Gardner) C.J. O'Kelly

Gabrielson, P.W., Lindstrom, S.C. & O'Kelly, C.J. 2012. Keys to the seaweeds and seagrasses of southeast Alaska, British Columbia, Washington and Oregon. Phycological Contribution 9: iv + 1-192. Nielsen, R., Petersen, G., Seberg, O., Daugbjerg, N., O'Kelly, C.J. & Wysor, B. 2013. Revision of the genus Ulvella (Ulvellaceae, Ulvophyceae) based on morphology and tufA gene sequences of species in culture, with Acrochaete and Pringsheimiella placed in synonymy. Phycologia 5: 37-56.

Former name: Pseudulvella applanata Setchell & N.L. Gardner Current name: Ulvella lens P.L. Crouan & H.M. Crouan

Pseudulvella consociata Setchell & N.L. Gardner

Pseudulvella prostrata Setchell & N.L. Gardner

Former name: Rhizoclonium implexum (Dillwyn) Kützing Current name: Rhizoclonium riparium var. implexum (Dillwyn) Rosenvinge

Silva, P.C., Basson, P.W. & Moe, R.L. 1996. Catalogue of the benthic marine algae of the Indian Ocean. University of California Publications in Botany 79: 1-1259.

Rhizoclonium riparium (Roth) Harvey

Miyaji, K. 1992. The occurrence of Rhizoclonium riparium and R. tortuosum (Chlorophyceae) on the coast of Hokkaido, Japan. Japanese Journal of Phycology 40: 167-172. *Rhizoclonium tortuosum (Dillwyn) Kützing

Miyaji, K. 1992. The occurrence of Rhizoclonium riparium and R. tortuosum (Chlorophyceae) on the coast of Hokkaido, Japan. Japanese Journal of Phycology 40: 167-172.

*Rosenvingiellopsis constricta (Setchell & Gardner) S. Heesch, M. Pažoutová & F. Rindi

Silva, P.C. 1957. Notes on Paciﬁc marine algae. Madroño 14: 41-51. Rindi, F., McIvor, L., Sherwood, A.R., Friedl, T., Guiry, M.D. & Sheath, R.G. 2007. Molecular phylogeny of the green algal order Prasiolales (Trebouxiophyceae, Chlorophyta). Journal of Phycology 43: 811-822. Heesch, S., Pazoutova, M., Moniz, M.B.J., & Rindi, F. 2016. Prasiolales (Trebouxiophyceae, Chlorophyta) of the Svalbard Archipelago: diversity, biogeography and description of the new genera Prasionella and Prasionema. European Journal of Phycology 51: 171-187.

*Rosenvingiella radicans (Kützing) F. Rindi, L. McIvor & M. Guiry

Rindi, F., McIvor, L. & Guiry, M.D. 2004. The Prasiolales (Chlorophyta) of Atlantic Europe: an assessment based on morphological, molecular, and ecological data, including the characterization of Rosenvingiella radicans (Kützing) comb. nov. Journal of Phycology 40: 977-997.

Former name: Spongomorpha coalita (Ruprecht) Collins Current name: Acrosiphonia coalita (Ruprecht) R.F. Scagel, D.J. Garbary, L. Golden & M.J. Hawkes

Scagel, R.F., Garbary, D.J., Golden, L. & Hawkes, M.W. 1986. A synopsis of the benthic marine algae of British Columbia, northern Washington and southeast Alaska. Volume 1. Pp. 444. Vancouver: Department of Botany, University of British Columbia. Sussmann, A.V., Mable, B.K., DeWreede, R.E. & Berbee, M.L. 1999. Identiﬁcation of green algal endophytes as the alternate phase of Acrosiphonia (Codiolales, Chlorophyta) using ITS1 and ITS2 ribosomal DNA sequence data. Journal of Phycology 35: 607-614.

Spongomorpha mertensii (Ruprecht) Setchell & N.L. Gardner

Former name: Spongomorpha saxatilis (Ruprecht) F.S. Collins Current name: Acrosiphonia saxatilis (Ruprecht) Vinogradova Vinogradova, K.L. 1979. Opredelitel' vodoroslej dal'nevostochnykh morej SSSR. Selenye vodorosli. Pp. 148. Leningrad: Akademiya Nauk SSSR, Botanicheskij Institut im. V.L. Komarova.

Ulothrix ﬂacca (Dillwyn) Thuret

Ulothrix implexa (Kützing) Kützing

Lokhorst, G.M. 1978. Taxonomic studies on the marine and brackish-water species of Ulothrix (Ulotrichales, Chlorophyceae) in western Europe. Blumea 24: 191-299. Burrows, E.M. 1991. Seaweeds of the British Isles. Volume 2. Chlorophyta. Pp. xi + 238, 60 ﬁgs., 9 plates. London: Natural History Museum Publications.

Former name: Ulothrix laetevirens (Hooker) F.S. Collins Current name: Ulothrix ﬂacca (Dillwyn) Thuret

Lokhorst, G.M. 1978. Taxonomic studies on the marine and brackish-water species of Ulothrix (Ulotrichales, Chlorophyceae) in western Europe. Blumea 24: 191-299.

Former name: Ulothrix pseudoﬂacca Wille Current name: Ulothrix ﬂacca (Dillwyn) Thuret

Former name: Ulva angusta Setchell & N.L. Gardner Current name: Ulva californica Wille

Tanner, C.E. 1986. Investigations of the taxonomy and morphological variation of Ulva (Chlorophyta): Ulva californica Wille. Phycologia 25: 510-520. Hayden, H.S. & Waaland, J.R. 2004. A molecular systematic study of Ulva (Ulvaceae, Ulvales) from the northeast Paciﬁc. Phycologia 43: 364-382.

*Ulva australis Areschoug Hughey, J.R. 2013. Noteworthy collections. California. Gracilariopsis chorda, Ulva pertusa, Ulva clathratioides, Gracilaria vermiculophylla. Madroño 60: 57-59. Kirkendale, L., Saunders, G.W. & Winberg, P. 2013. A molecular survey of Ulva (Chlorophyta) in temperate Australia reveals enhanced levels of cosmopolitanism. Journal of Phycology 49(1): 69-81.

Ulva californica Wille

*Ulva clathratioides L. Kraft, G.T. Kraft & R. Waller

Hughey, J.R. 2013. Noteworthy collections. California. Gracilariopsis chorda, Ulva pertusa, Ulva clathratioides, Gracilaria vermiculophylla. Madroño 60: 57-59.

Former name: Ulva costata (M.A. Howe) G.J. Hollenberg sensu Abbott & Hollenberg 1976 Current name: Ulva taeniata (Setchell) Setchell & N.L. Gardner

Hayden, H.S. & Waaland, J.R. 2004. A molecular systematic study of Ulva (Ulvaceae, Ulvales) from the northeast Paciﬁc. Phycologia 43: 364-382.

Former name: Ulva dactylifera Setchell & N.L. Gardner Current name: Ulva taeniata (Setchell) Setchell & N.L. Gardner

Hayden, H.S. & Waaland, J.R. 2004. A molecular systematic study of Ulva (Ulvaceae, Ulvales) from the northeast Paciﬁc. Phycologia 43: 364-382.

Ulva expansa (Setchell) Setchell & N.L. Gardner

*Ulva fenestrata Postels & Ruprecht

Ulva lactuca Linnaeus Tropical species; not in California

Hayden, H.S. & Waaland, J.R. 2004. A molecular systematic study of Ulva (Ulvaceae, Ulvales) from the northeast Paciﬁc. Phycologia 43: 364-382. Hughey, J.R., Maggs, C.A., Mineur, F., Jarvis, C., Miller, K.A., Shabaka, S.H. & Gabrielson, P.W. 2019. Genetic analysis of the Linnaean Ulva lactuca (Ulvales, Chlorophyta) holotype and related type specimens reveals name missapplications, unexpected origins, and new synonomies (Letter). Journal of Phycology 55(3): 503-508.

Former name: Ulva lobata (Kützing) Setchell & N.L. Gardner Current name: Ulva fenestrata Postels & Ruprecht

Hughey, J.R., Maggs, C.A., Mineur, F., Jarvis, C., Miller, K.A., Shabaka, S.H. & Gabrielson, P.W. 2019. Genetic analysis of the Linnaean Ulva lactuca (Ulvales, Chlorophyta) holotype and related type specimens reveals name missapplications, unexpected origins, and new synonomies (Letter). Journal of Phycology 55(3): 503-508. Harvey, W.H. 1855. Algae. In: The botany of the Antarctic voyage of H.M. discovery ships Erebus and Terror, in the years 1839-1843, under the command of Captain Sir James Clark Ross.... II. Flora Novae-Zelandiae. Part II. Flowerless plants. (Hooker, J.D., ed.), pp. 211-266. London: Reeve. Wynne, M.J. 2002. The reinstatement of the name Ulva nematoidea Bory de Saint-Vincent (Chlorophyta) and the placement of U. costata (Howe) Hollenberg in its taxonomic synonymy. Cryptogamie, Algologie 23: 5-12.

*Ulva pertusa Kjellman

Hayden, H.S. & Waaland, J.R. 2004. A molecular systematic study of Ulva (Ulvaceae, Ulvales) from the northeast Paciﬁc. Phycologia 43: 364-382. Kraft, L.G.K., Kraft, G.T. & Waller, R.F. 2010. Investigations into southern Australian Ulva (Ulvophyceae, Chlorophyta) taxonomy and molecular phylogeny indicate both cosmopolitanism and endemic cryptic species. Journal of Phycology 46: 1257-1277. Hughey, J.R. 2013. Noteworthy collections. California. Gracilariopsis chorda, Ulva pertusa, Ulva clathratioides, Gracilaria vermiculophylla. Madroño 60: 57-59.

*Ulva pseudocurvata Koeman & van den Hoek

Ulva stenophylla Setchell & N.L. Gardner

Ulva rigida C. Agardh Not reported from California Hayden, H.S. & Waaland, J.R. 2004. A molecular systematic study of Ulva (Ulvaceae, Ulvales) from the northeast Paciﬁc. Phycologia 43: 364-382.

*Ulva tanneri H. Hayden & J.R. Waaland

Tanner, C.E. 1980. Chloropelta gen. nov., an ulvaceous green alga with a different type of development. Journal of Phycology 16: 128-137. Hayden, H.S., Blomster, J., Maggs, C.A., Silva, P.C., Stanhope, M.J. & Waaland, J.R. 2003. Linnaeus was right all along: Ulva and Enteromorpha are not distinct genera. European Journal of Phycology 38: 277-294.

*Ulvaria fusca (Postels & Ruprecht) Vinogradova

Ulvella setchellii Dangeard

Urospora doliifera (Setchell & N.L. Gardner) M.S. Doty

Urospora penicilliformis (Roth) J.E. Areschoug

Urospora wormskioldii (J.W. Hornemann) Rosenvinge Brown Algae

Acinetospora nicholsoniae G.J. Hollenberg

Former name: Agarum ﬁmbriatum Harvey Current name: Neoagarum ﬁmbriatum (Harvey) H. Kawai & T. Hanyuda

Kawai, H., Hanyuda, T., Gao, X., Terauchi, M., Miyata, M., Lindstrom, S.C., Klochkova, N.G. & Miller, K.A. 2017. Taxonomic revision of the Agaraceae with a description of Neoagarum gen. nov. and reinstatement of Thalassiophyllum. Journal of Phycology 53(2): 261-270.

Alaria marginata Postels & Ruprecht

Analipus japonicus (Harvey) M.J. Wynne

*Battersia plumigera (Holmes ex Hauck) S.G.A. Draisma, W.F. Prud'homme van Reine & H. Kawai

Draisma, S.G.A., Prud'homme van Reine, W.F. & Kawai, H. 2010. A revised classiﬁcation of the Sphacelariales (Phaeophyceae) inferred from a psbC and rbcL based phylogeny. European Journal of Phycology 45: 308- 326.

Coilodesme californica (Ruprecht) Kjellman

Coilodesme corrugata Setchell & N.L. Gardner

Coilodesme plana G.J. Hollenberg & I.A. Abbott

Coilodesme rigida Setchell & N.L. Gardner

Former name: Colpomenia bullosa (DeA. Saunders) Yamada Current name: Dactylosiphon bullosus (D.A. Saunders) Santiañez, K.M. Lee, S.M. Boo & Kogame

Santiañez, W.J.E., Macaya, E.C., Lee, K.M., Cho, G.Y., Boo, S.M. & Kogame, K. 2018. Taxonomic reassessment of the Indo-Paciﬁc Scytosiphonaceae (Phaeophyceae): Hydroclathrus rapanuii sp. nov. and Chnoospora minima from Easter Island, with proposal of Dactylosiphon gen. nov. and Pseudochnoospora gen. nov.. Botanica Marina 61: 47-64.

*Colpomenia claytoniae S.M. Boo, K.M. Lee, G.Y. Cho & W. Nelson

Boo, S.M., Lee, K.M., Cho, G.Y. & Nelson, W.A. 2011. Colpomenia claytonii sp. nov. (Scytosiphonaceae, Phaeophyceae) based on morphology and mitochondrial cox 3 sequences. Botanica Marina 54: 159-167.

*Colpomenia expansa (DeA. Saunders) Y.P. Lee

Lee, Y.-P. 2008. Marine algae of Jeju. pp. [i]-xvi, 1-477 [2], map. Seoul: Academy Publication.

Colpomenia peregrina (Sauvageau) G. Hamel

Colpomenia sinuosa (Mertens ex Roth) Derbès & Solier

Colpomenia tuberculata DeA. Saunders

Former name: Compsonema fructosum Setchell & N.L. Gardner Current name: Compsonema fructuosum Setchell & N.L. Gardner Compsonema intricatum Setchell & N.L. Gardner

Compsonema serpens Setchell & N.L. Gardner

*Compsonema sporangiiferum Setchell & N.L. Gardner

Costaria costata (C. Agardh) DeA. Saunders

*Former name: Cutleria cylindrica Okamura Current name: Mutimo cylindricus (Okamura) H. Kawai & T. Kitayama

Stewart, J.G. 1991. Marine algae and seagrasses of San Diego County. California Sea Grant College, University of California, La Jolla, Calif. Report No. T-CSGCP-020. Pp. 197. Kawai, H., Kogishi, K., Hanyuda, T. & Kitayama, T. 2012. Taxonomic revision of the genus Cutleria proposing a new genus Mutimo to accommodate M. cylindricus (Cutleriaceae, Phaeophyceae). Phycological Research 60: 241-248.

Former name: Cylindrocarpus rugosus Okamura Current name: Petrospongium rugosum (Okamura) Setchell & N.L. Gardner

Setchell, W.A. & Gardner, N.L. 1924. Phycological contributions, VII. University of California Publications in Botany 13: 1-13.

Former name: Cystoseira neglecta Setchell & N.L. Gardner Current name: Stephanocystis neglecta (Setchell & N.L. Gardner) S.G.A. Draisma, E. Ballesteros, F. Rousseau, & T. Thibaut

Draisma, S.G.A., Ballesteros, E., Rousseau, F. & Thibaut, T. 2010. DNA sequence data demonstrate the polyphyly of the genus Cystoseira and other Sargassaceae genera (Phaeophyceae). Journal of Phycology 46: 1329-1345.

Former name: Cystoseira osmundacea (Turner) C. Agardh Current name: Stephanocystis osmundacea (Turner) Trevisan

Former name: Cystoseira setchellii N.L. Gardner Current name: Stephanocystis setchellii (N.L. Gardner) S.G.A. Draisma, E. Ballesteros, F. Rousseau, & T. Thibaut Draisma, S.G.A., Ballesteros, E., Rousseau, F. & Thibaut, T. 2010. DNA sequence data demonstrate the polyphyly of the genus Cystoseira and other Sargassaceae genera (Phaeophyceae). Journal of Phycology 46: 1329-1345.

Desmarestia kurilensis Yamada

Former name: Desmarestia latifrons Kützing Current name: Desmarestia latifrons (Ruprecht) Kützing

Ruprecht, F.J. 1850. Algae ochotenses. Die ersten sicheren Nachrichten über die Tange des Ochotskischen Meeres. Pp. 243. St. Petersburg. Peters, A.F., van Oppen, M.J.H., Wiencke, C., Stam, W.T. & Olsen, J.L. 1997. Phylogeny and historical ecology of the Desmarestiaceae (Phaeophyceae) support a southern hemisphere origin. Journal of Phycology 33: 294-309.

Former name: Desmarestia ligulata (Lightfoot) Lamouroux sensu Abbott & Hollenberg 1976 Current name: Desmarestia herbacea (Turner) Lamouroux

Yang, E.C., Peters, A.F., Kawai, H., Stern, R., Hanyuda, T., Bárbara, I., Müller, D.G., Strittmatter, M., Prud'homme van Reine, W.F. & Küpper, F.C. 2014. Ligulate Desmarestia (Desmarestiales, Phaeophyceae) revisited: D. japonica sp. nov. and D. dudresnayi differ from D. ligulata. J. Phycology doi: 10.1111/jpy.12148 Peters, A.F. & Müller, D.G. 1986. Life-history studies - a new approach to the taxonomy of ligulate species of Desmarestia (Phaeophyceae) from the Pacific coast of Canada. Canadian Journal of Botany 64: 2192-2196. Chapman, A.R.O. 1971. Morphological variation and its taxonomic implications in the ligulate members of the genus Desmarestia occurring on the west coast of North America. Syesis 5: 1-20. Silva, P.C. 1979. The benthic algal flora of central San Francisco Bay. In: San Francisco Bay: the Urbanized Estuary. (Conomos, T.J., ed.), pp. 287- 345. San Francisco: Pacific Division, American Association for the Advancement of Science. Peters, A.F. & Müller, D.G. 1986. Life-history studies - a new approach to the taxonomy of ligulate species of Desmarestia (Phaeophyceae) from the Pacific coast of Canada. Canadian Journal of Botany 64: 2192-2196. Chapman, A.R.O. 1971. Morphological variation and its taxonomic implications in the ligulate members of the genus Desmarestia occurring on the west coast of North America. Syesis 5: 1-20.

Former name: Desmarestia ligulata var. ﬁrma (C. Agardh) J. Agardh sensu Abbott & Hollenberg 1976 Current name: Desmarestia dudresnayi subsp. tabacoides (Okamura) A.F. Peters, E.C. Yang, F.C. Küpper & W.H. Prud'homme van Reine

Former name: Desmarestia munda Setchell & N.L. Gardner Current name: Desmarestia herbacea (Turner) Lamouroux Yang et al. 2014

Desmarestia viridis (O.F. Müller) Lamouroux

Former name: Dictyoneuropsis reticulata (DeA. Saunders) G.M. Smith Current name: Dictyoneurum reticulatum (DeA. Saunders) P.C. Silva

Pedroche, P.F., Silva, P.C., Aguilar-Rosas, L.E., Dreckmann, K.M. & Aguilar-Rosas, R. 2008. Catálogo de las algas bentónicas del Pacíﬁco de México II. Phaeophycota. Pp. 15-146. Mexicali & Berkeley: Universidad Autónoma Metropolitana and University of California Berkeley. Kawai, H., Hanyuda, T., Gao, X., Terauchi, M., Miyata, M., Lindstrom, S.C., Klochkova, N.G. & Miller, K.A. 2017. Taxonomic revision of the Agaraceae with a description of Neoagarum gen. nov. and reinstatement of Thalassiophyllum. Journal of Phycology 53(2): 261-270.

Dictyoneurum californicum Ruprecht

Dictyopteris undulata Holmes

Former name: Dictyopteris johnstonei N.L. Gardner Current name: Dictyopteris undulata Holmes

Silva, P.C. 1957. Notes on Paciﬁc marine algae. Madroño 14: 41-51. Abbott, I.A. 1972. Taxonomic and nomenclatural notes on North Paciﬁc marine algae. Phycologia 11: 259-265.

Dictyota binghamiae J. Agardh

Dictyota ﬂabellata (F.S. Collins) Setchell & N.L. Gardner

Diplura simulans G.J. Hollenberg

Ectocarpus acutus Setchell & N.L. Gardner

Former name: Ectocarpus acutus var. haplogloiae M.S. Doty Current name: Ectocarpus fasciculatus Harvey

Kim, H.S. & Lee, I.K. 1992. Morphotaxonomic studies on the Korean Ectocarpaceae (Phaeophyta) I. Genus Ectocarpus Lyngbye. Korean Journal of Phycology 7: 225-242.

Ectocarpus chantransioides Setchell & N.L. Gardner

Ectocarpus corticulatus DeA. Saunders

Former name: Ectocarpus fructosus Setchell & N.L. Gardner Current name: Ectocarpus fructuosus Setchell & N.L. Gardner

Ectocarpus gonodioides Setchell & N.L. Gardner

Ectocarpus isopodicola E.Y. Dawson

Former name: Ectocarpus parvus (DeA. Saunders) G.J. Hollenberg Current name: Ectocarpus commensalis Setchell & N.L. Gardner

Ectocarpus siliculosus (Dillwyn) Lyngbye

Ectocarpus simulans Setchell & N.L. Gardner

Ectocarpus taoniae Setchell & N.L. Gardner

Former name: Egregia laevigata Setchell Current name: Egregia menziesii (Turner) J.E. Areschoug Henkel, S.K., Hofmann, G.E. & Whitmer, A.C. 2007. Morphological and genetic variation in Egregia menziesii over a latitudinal gradient. Botanica Marina 50: 159-170.

Former name: Egregia laevigata subsp. borealis (Setchell) P.C. Silva Current name: Egregia menziesii (Turner) J.E. Areschoug

Henkel, S.K., Hofmann, G.E. & Whitmer, A.C. 2007. Morphological and genetic variation in Egregia menziesii over a latitudinal gradient. Botanica Marina 50: 159-170.

Egregia menziesii (Turner) J.E. Areschoug

Former name: Egregia menziesii subsp. insularis P.C. Silva Current name: Egregia menziesii (Turner) J.E. Areschoug

Henkel, S.K., Hofmann, G.E. & Whitmer, A.C. 2007. Morphological and genetic variation in Egregia menziesii over a latitudinal gradient. Botanica Marina 50: 159-170.

Former name: Eisenia arborea J.E. Areschoug Current name: Ecklonia arborea (J.E. Areschoug) M.D. Rothman, Mattio & J.J. Bolton

Rothman, M.D., Mattio, L., Wernberg, T., Anderson, R.J., Uwai, S., Mohring, M.B. & Bolton, J.J. (2015). A molecular investigation of the genus Ecklonia (Phaeophyceae, Laminariales) with special focus on the southern hemisphere. Journal of Phycology 51: 236-246.

Elachista fucicola (Velley) J.E. Areschoug

*Elachista nigra Takamatsu

Kitayama, T., Miller, K.A. & Silva, P.C. 2005. First record of Elachista nigra (Chordariales, Phaeophyceae) from California, North America. Bulletin of the National Science Museum, Tokyo, Ser. B, 31: 57-61.

Former name: Endarachne binghamiae J. Agardh Current name: Petalonia binghamiae (J. Agardh) Vinogradova

Vinogradova, K.L. 1973. K anatomii roda Petalonia Derb. et Sol. (Scytosiphonales). Novosti Sistematiki Nizshikh Rastenij Botanicheskij Institut, Akademiya Nauk SSSR 10: 28-31. Kogame, K., Kurihara, A., Cho, G.Y, Lee, K.M., Sherwood, A.R. & Boo, S.M. 2011. Petalonia tatewakii sp. nov. (Scytosiphonaceae, Phaeophyceae) from the Hawaiian Islands. Phycologia 50: 563-573. Matsumoto, K., Ichihara, K. & Shimada, S. 2014. Taxonomic reinvestigation of Petalonia (Phaeophyceae, Ectocarpales) in southeast of Honshu, Japan, with a description of Petalonia tenuis sp. nov.. Phycologia 53: 127-136.

Endoplura aurea G.J. Hollenberg

Feldmannia acuminata (DeA. Saunders) G.J. Hollenberg & I.A. Abbott

Feldmannia chitonicola (DeA. Saunders) Levring

Former name: Feldmannia cylindrica (DeA. Saunders) G.J. Hollenberg & I.A. Abbott Current name: Feldmannia simplex (P. Crouan & H. Crouan) Hamel

Feldmannia globifera (Kützing) G. Hamel

Feldmannia hemispherica (DeA. Saunders) G.J. Hollenberg

Feldmannia irregularis (Kützing ) G. Hamel

Feldmannia rhizoidea G.J. Hollenberg & I.A. Abbott

Former name: Fucus gardneri P.C. Silva Current name: Fucus distichus Linnaeus

Coyer, J.A., Hoarau, G., Oudot-Le Secq, M.-P., Stam, W.T. & Olsen, J.L. 2006. A mtDNA-based phylogeny of the brown algal genus Fucus (Heterokontophyta; Phaeophyta). Molecular Phylogenetics and Evolution 39: 209-222. Kucera, H. & Saunders, G.W. 2008. Assigning morphological variants of Fucus (Fucales, Phaeophyceae) in Canadian waters to recognize species using DNA barcoding. Botany 86: 1065-1079.

*Fucus spiralis Linnaeus

Hughey, J.R., Kieldsen, C.K., Silva, P.C., Moe, R.L. & DeCew, T.C. 1996. Noteworthy collections. California. Madroño 43: 432. Serrão, E.A., Alice, L.A. & Brawley, S.H. 1999. Evolution of the Fucaceae (Phaeophyceae) inferred from nrDNA-ITS. Journal of Phycology 35: 382- 394.

Former name: Giffordia granulosa (J.E. Smith) G. Hamel Current name: Hincksia granulosa (J.E. Smith) P.C. Silva

Silva, P.C., Meñez, E.G. & Moe, R.L. 1987. Catalog of the benthic marine algae of the Philippines. Smithsonian Contributions to Marine Sciences 27: iv + 179.

Former name: Giffordia hincksiae var. californica G.J. Hollenberg & I.A. Abbott Current name: Hincksia hincksiae var. californica (G.J. Hollenberg & I.A. Abbott) P.C. Silva

Silva, P.C., Meñez, E.G. & Moe, R.L. 1987. Catalog of the benthic marine algae of the Philippines. Smithsonian Contributions to Marine Sciences 27: iv + 179.

Former name: Giffordia mitchelliae (Harvey) G. Hamel Current name: Feldmannia mitchelliae (Harvey) H.-S. Kim

Silva, P.C., Meñez, E.G. & Moe, R.L. 1987. Catalog of the benthic marine algae of the Philippines. Smithsonian Contributions to Marine Sciences 27: iv + 179. Kim, H.-S. 2010. Ectocarpaceae, Acinetosporaceae, Chordariaceae. In: Algal ﬂora of Korea. Volume 2, Number 1. Heterokontophyta: Phaeophyceae: Ectocarpales. Marine brown algae I. (Kim, H.-S. & Boo, S.- M. Eds), pp. [3]-137. Incheon: National Institute of Biological Resources.

Former name: Giffordia sandriana (Zanardini) G. Hamel Current name: Hincksia sandriana (Zanardini) P.C. Silva

Silva, P.C., Meñez, E.G. & Moe, R.L. 1987. Catalog of the benthic marine algae of the Philippines. Smithsonian Contributions to Marine Sciences 27: iv + 179.

Former name: Giffordia saundersii (Setchell & N.L. Gardner) G.J. Hollenberg & I.A. Abbott Current name: Hincksia saundersii (Setchell & N.L. Gardner) P.C. Silva

Silva, P.C., Meñez, E.G. & Moe, R.L. 1987. Catalog of the benthic marine algae of the Philippines. Smithsonian Contributions to Marine Sciences 27: iv + 179.

Former name: Halidrys dioica N.L. Gardner Current name: Stephanocystis dioica (Gardner) S.G.A. Draisma, E. Ballesteros, F. Rousseau, & T. Thibaut

Halorhipis winstonii (C.L. Anderson) DeA. Saunders

Haplogloia andersonii (Farlow) Levring

Hapalospongidion gelatinosum DeA. Saunders

Former name: Hapterophycus canaliculatus Setchell & N.L. Gardner Former name: Scytosiphon canaliculatus (Setchell & N.L. Gardner) Kogame Current name: Hapterophycus canaliculatus Setchell & N.L. Gardner

Santiañez, W.J.E. & Kogame, K. 2019. Proposals to recognize Petalonia tenella comb. nov. and to resurrect Hapterophycus canaliculatus (Scytosiphonaceae, Phaeophyceae). Botanica Marina 62(2): 149-153. McDevit, D.C. & Saunders, G.W. 2017. A molecular investigation of Canadian Scytosiphonaceae (Phaeophyceae) including descriptions of Planosiphon gen. nov. and Scytosiphon promiscuus sp. nov. Botany 95: 653-671.

Hecatonema primarium (Setchell & N.L. Gardner) S. Loiseaux

Hecatonema streblonematoides (Setchell & N.L. Gardner) S. Loiseaux

Former name: Hedophyllum sessile (C. Agardh) Setchell Former name: Saccharina sessilis (C. Agardh) Kuntze Current name: Hedophyllum sessile (C. Agardh) Setchell

Lane, C.E., Mayes, C., Druehl, L.D. & Saunders, G.W. 2006. A multi-gene molecular investigation of the kelp (Laminariales, Phaeophyceae) supports substantial taxonomic re-organization. Journal of Phycology 42: 493-512. Starko, S., Soto Gomez, M., Darby, H., Demes, K.W., Kawai, H., Yotsukura, N., Lindstrom, S.C., Keeling, P.J., Graham, S.W. & Martone, P.T. 2019. A comprehensive kelp phylogeny sheds light on the evolution of an ecosystem. Molecular Phylogenetics and Evolution 136: 138-150.

Former name: Hesperophycus harveyanus (Decaisne) Setchell & N.L. Gardner Former name: Hesperophycus californicus P.C. Silva Current name: Pelvetiopsis californica (P.C. Silva) Neiva, Raimondi, Pearson & Serrão

Silva, P.C. 1990. Hesperophycus Setchell & Gardner, nom. cons. prop., a problematic name applied to a distinctive genus of Fucaceae (Phaeophyceae). Taxon 39: 1-8. Neiva, J., Serrão, E.A., Anderson, L., Raimondi, P.T., Martins, N., Gouveia, L., Paulino, C., Coelho, N.C., Miller, K.A., Ladah, L.B. & Pearson, G.A. 2017. Cryptic diversity, geographical endemism and allopolyploidy in NE Paciﬁc seaweeds. BMC Evolutionary Biology 17(30): 1-12. Neiva, J., Raimondi, P.T., Pearson, G.A. & Serrão, E.A. 2017. Validation of Pelvetiopsis californica (Fucaceae, Phaeophyceae). Notulae Algarum 20: 1 only.

Hydroclathrus clathratus (C. Agardh) M.A. Howe

Kuckuckia catalinae G.J. Hollenberg

*Laminaria cordata E.Y. Dawson

Dawson, E.Y. 1950. Notes on Paciﬁc coast marine algae, IV. American Journal of Botany 37: 149-158. Druehl, L.D. 1968. Taxonomy and distribution of northeast Paciﬁc species of Laminaria. Canadian Journal of Botany 46: 539-547.

Former name: Laminaria dentigera Kjellman sensu Abbott & Hollenberg 1976 Current name: Laminaria setchellii P.C. Silva

Silva, P.C. 1957. Notes on Paciﬁc marine algae. Madroño 14: 41-51.

Laminaria ephemera Setchell

Laminaria farlowii Setchell

Laminaria setchellii P.C. Silva

Former name: Laminaria sinclairii (Harvey) Farlow, C.L. Anderson & Eaton Current name: Laminaria sinclairii (Harvey ex J.D. Hooker & Harvey) Farlow, C.L. Anderson, & Eaton Former name: Leathesia difformis (Linnaeus) J.E. Areschoug Current name: Leathesia marina (Lyngbye) Decaisne

Former name: Leathesia nana Setchell & N.L. Gardner Current name: Leathesia marina (Lyngbye) Decaisne

Webber, E.E. 1981. Observations on Leathesia difformis (L.) Areschoug from Nahant, Massachusetts. Botanica Marina 24: 297-298. Novaczek, I. 1987. Periodicity of epiphytes on Zostera marina in two embayments of the southern Gulf of St. Lawrence. Canadian Journal of Botany 65: 1676-1681. Scagel, R.F., Gabrielson, P.W., Garbary, D.J., Golden, L., Hawkes, M.W., Lindstrom, S.C., Oliveira, J.C. & Widdowson, T.B. 1989. A synopsis of the benthic marine algae of British Columbia, southeast Alaska, Washington and Oregon. Phycological Contributions, University of British Columbia 3: vi + 532. Pedroche, P.F., Silva, P.C., Aguilar-Rosas, L.E., Dreckmann, K.M. & Aguilar-Rosas, R. 2008. Catálogo de las algas bentónicas del Pacíﬁco de México II. Phaeophycota. Pp. 15-146. Mexicali & Berkeley: Universidad Autónoma Metropolitana and University of California Berkeley.

Lessoniopsis littoralis (Farlow & Setchell ex J.E. Tilden) Reinke

Former name: Macrocystis integrifolia Bory Current name: Macrocystis pyrifera (Linnaeus) C. Agardh

Coyer, J.A., Smith, G.J. & Andersen, R.A. 2001. Evolution of Macrocystis spp. (Phaeophyceae) as determined by ITS1 and ITS2 sequences. Journal of Phycology 37:574-585. Westermeier, R., Patino, D. & Müller, D.G. 2007. Sexual compatibility and hybrid formation between the giant kelp species Macrocystis pyrifera and M. integrifolia (Laminariales, Phaeophyceae) in Chile. Journal of Applied Phycology 19: 215-221. Demes, K.W., Graham, M.H. & Suskiewicz, T. 2009. Phenotypic plasticity reconciles incongruous molecular and morphological taxonomies: the giant kelp, Macrocystis (Laminariales, Phaeophyceae), is a monospeciﬁc genus. Journal of Phycology 45: 1266-1269. Macrocystis pyrifera (Linnaeus) C. Agardh

Melanosiphon intestinalis (DeA. Saunders) M.J. Wynne

Melanosiphon intestinalis f. tenuis (Setchell & N.L. Gardner) M.J. Wynne

Myrionema balticum (Reinke) Foslie

Myrionema corunnae Sauvageau

Myrionema magnusii (Sauvageau) S. Loiseaux

Myrionema strangulans Greville

Former name: Nereocystis luetkeana (Mertens) Postels & Ruprecht Current name: Nereocystis luetkeana (Mertens f.) Postels & Ruprecht

Former name: Pachydictyon coriaceum (Holmes) Okamura Current name: Dictyota coriacea (Holmes) I.K. Hwang, H.S. Kim, & W.J. Lee

Hwang, I.K., Kim, H.S. & Lee, W.J. 2004. Evidence for taxonomic status of Pachydictyon coriaceum (Holmes) Okamura (Dictyotales, Phaeophyceae) based on morphology and plastid protein encoding rbcL, psaA and psbA gene sequences. Algae 19: 175-190.

Pelagophycus porra (Leman) Setchell

Former name: Pelvetia fastigiata (J. Agardh) De Toni Current name: Silvetia compressa (J. Agardh) E.A. Serrão, T.O. Cho, S.M. Boo, & S.H. Brawley

Serrão, E.A., Alice, L.A. & Brawley, S.H. 1999. Evolution of the Fucaceae (Phaeophyceae) inferred from nrDNA-ITS. Journal of Phycology 35: 382- 394.

Former name: Pelvetia fastigiata f. gracilis Setchell & N.L. Gardner Current name: Silvetia compressa subsp. deliquescens P.C. Silva

Silva, P.C., Pedroche, F.F., Chacana, M.E., Aguilar-Rosas, R., Aguilar- Rosas, L.E. & Raum, J. 2004. Geographic correlation of morphological and molecular variation in Silvetia compressa (Fucaceae, Fucales, Phaeophyceae). Phycologia 43: 204-214. Serrão, E.A., Alice, L.A. & Brawley, S.H. 1999. Evolution of the Fucaceae (Phaeophyceae) inferred from nrDNA-ITS. Journal of Phycology 35: 382- 394.

Pelvetiopsis arborescens N.L. Gardner

*Pelvetiopsis hybrida Neiva, Raimondi, Pearson & Serrão

Neiva, J., Serrão, E.A., Anderson, L., Raimondi, P.T., Martins, N., Gouveia, L., Paulino, C., Coelho, N.C., Miller, K.A., Ladah, L.B. & Pearson, G.A. 2017. Cryptic diversity, geographical endemism and allopolyploidy in NE Paciﬁc seaweeds. BMC Evolutionary Biology 17(30): 1-12. Neiva, J., Raimondi, P.T., Pearson, G.A. & Serrão, E.A. 2017. Validation of Pelvetiopsis californica (Fucaceae, Phaeophyceae). Notulae Algarum 20: 1 only.

Pelvetiopsis limitata (Setchell) N.L. Gardner

Petalonia fascia (O.F. Müller) Kuntze

Petroderma maculiforme (Wollny) Kuckuck

Phaeostrophion irregulare Setchell & N.L. Gardner

Former name: Pilayella Bory Current name: Pylaiella Bory

Former name: Pilayella gardneri Collins Current name: Pylaiella gardneri Collins

Former name: Pilayella littoralis (Linnaeus) Kjellman Current name: Pylaiella littoralis (Linnaeus) Kjellman

Former name: Pilayella tenella Setchell & N.L. Gardner Current name: Pylaiella tenella Setchell & N.L. Gardner

Former name: Pleurophycus gardneri Setchell & Saunders Current name: Pleurophycus gardneri Setchell & Saunders ex Tilden

Punctaria hesperia Setchell & N.L. Gardner

Punctaria occidentalis Setchell & N.L. Gardner

Postelsia palmaeformis Ruprecht

Former name: Pseudolithoderma nigra G.J. Hollenberg Current name: Pseudolithoderma nigrum G.J. Hollenberg

Pterygophora californica Ruprecht

Punctaria hesperia Setchell & N.L. Gardner

Punctaria occidentalis Setchell & N.L. Gardner

Ralfsia confusa G.J. Hollenberg

Ralfsia fungiformis (Gunnerus) Setchell & N.L. Gardner

Ralfsia hesperia Setchell & N.L. Gardner

Ralfsia integra G.J. Hollenberg

Ralfsia paciﬁca G.J. Hollenberg

Former name: Rosenvingea ﬂoridana (W.R. Taylor) W.R. Taylor Current name: Rosenvingea antillarum (P.L. Crouan & H.M. Crouan) M.J. Wynne

Wynne, M.J. 1997. Rosenvingea antillarum (P. Crouan & H. Crouan) comb. nov. to replace R. ﬂoridana (W.R. Taylor) W.R. Taylor (Scytosiphonales, Phaeophyta). Cryptogamie, Algologie 18: 331-336.

*Saccharina latissima (Linnaeus) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders

Sargassum agardhianum Farlow

*Sargassum horneri (Turner) C. Agardh

Miller, K.A., Engle, J.M., Uwai, S. & Kawai, H. 2007. First report of the Asian seaweed Sargassum ﬁlicinum Harvey (Fucales) in California, USA. Biological Invasions 9: 609-613. Uwai, S., Kogame, K., Yoshida, G., Kawai, H. & Ajisaka, T. 2009. Geographical genetic structure and phylogeography of the Sargassum horneri/ﬁlicinum complex in Japan, based on the mitochondrial cox3 haplotype. Marine Biology 156: 901-911.

Sargassum muticum (Yendo) Fensholt

Sargassum palmeri Grunow

Scytosiphon dotyi M.J. Wynne Former name: Scytosiphon lomentaria (Lyngbye) J. Agardh Current name: Scytosiphon lomentaria (Lyngbye) Link

Former name: Sorocarpus paciﬁca G.J. Hollenberg Current name: Botrytella paciﬁca (G.J. Hollenberg) G.I. Hansen

Hansen, G.I. 1997. A revised checklist and preliminary assessment of the macrobenthic marine algae and seagrasses of Oregon. In: Conservation and Management of Native Flora and Fungi. (Kaye, T.N., Liston, A., Love, R.M., Luoma, D.L., Meinke, R.J. & Wilson, M.V., eds.), pp. 175-200. Corvallis: Native Plant Society of Oregon.

Soranthera ulvoidea Postels & Ruprecht

Sphacelaria californica (Sauvageau) Setchell & N.L. Gardner

Sphacelaria didichotoma DeA. Saunders

Former name: Sphacelaria furcigera Kützing Current name: Sphacelaria rigidula Kützing

Prud'homme van Reine, W.F. 1982. A taxonomic revision of the European Sphacelariaceae (Sphacelariales, Phaeophyceae). Leiden Bot. Ser. V 6. Pp. 293. Kitayama, T. 1994. A taxonomic study of the Japanese Sphacelaria (Sphacelariales, Phaeophyceae). Bulletin of the National Science Museum, Tokyo, Ser. B (Botany) 20: 37-141.

Former name: Sphacelaria racemosa Greville Current name: Battersia racemosa (Greville) S.G.A. Draisma, W.F. Prud'homme van Reine & H. Kawai

Spongonema tomentosum (Hudson) Kützing

Sporochnus pedunculatus (Hudson) C. Agardh

Former name: Stictyosiphon tortilis (Ruprecht) Reinke Current name: Stictyosiphon tortilis (Gobi) Reinke Former name: Streblonema aecidioides De Toni Current name: Laminariocolax aecidioides (Rosenvinge) A.F. Peters

Burkhardt, E. & Peters, A.F. 1998. Molecular evidence from nrDNA its sequences that Laminariocolax (Phaeophyceae, Ectocarpales sensu lato) is a worldwide clade of closely related kelp endophytes. Journal of Phycology 34: 682-691.

*Streblonema anomalum Setchell & N.L. Gardner

Setchell, W.A. & Gardner, N.L. 1922. Phycological contributions. V. New species of Pylaiella and Streblonema. University of California Publications in Botany 7: 385-402.

Streblonema corymbiferum Setchell & N.L. Gardner

Streblonema evagatum Setchell & N.L. Gardner

Former name: Streblonema investiens (F.S. Collins) Setchell & N.L. Gardner Current name: Cylindrocarpus microscopicus P. Crouan & H. Crouan

Crouan, P.L. & Crouan, H.M. (1851). �tudes microscopiques sur quelques algues nouvelles ou peu connues constituant un genre nouveau. Annales des Sciences Naturelles, Botanique, Troisième série 15: 359-366, pls 16, 17.

Streblonema myrionematoides Setchell & N.L. Gardner

Streblonema paciﬁcum DeA. Saunders

Streblonema penetrale Setchell & N.L. Gardner

Streblonema porphyrae Setchell & N.L. Gardner

Streblonema scabiosum Setchell & N.L. Gardner

Streblonema transﬁxum Setchell & N.L. Gardner

Former name: Syringoderma abyssicola (Setchell & N.L. Gardner) Levring Current name: Microzonia abyssicola (Setchell & N.L. Gardner) Camacho & Fredericq

Camacho, O., Sauvage, T. & Fredericq, S. 2018. Taxonomic transfer of Syringoderma to Microzonia (Syringodermataceae, Syringodermatales), including a new record of Microzonia ﬂoridana comb. nov. for the Gulf of Mexico. Phycologia 57(4): 413-421. *Former name: Syringoderma phinneyi Henry & D.G. Müller Current name: Microzonia phinneyi (E.C.Henry & D.G. Müller) Camacho & Fredericq

Henry, E.C. & Müller, D.G. 1983. Studies on the life history of Syringoderma phinneyi sp. nov. (Phaeophyceae). Phycologia 22: 387-393. Camacho, O., Sauvage, T. & Fredericq, S. 2018. Taxonomic transfer of Syringoderma to Microzonia (Syringodermataceae, Syringodermatales), including a new record of Microzonia ﬂoridana comb. nov. for the Gulf of Mexico. Phycologia 57(4): 413-421.

Former name: Taonia lennebackeriae J. Agardh Current name: Taonia lennebackerae J. Agardh

Tinocladia crassa (Suringar) Kylin

*Undaria pinnatiﬁda (Harvey) Suringar

Zonaria farlowii Setchell & N.L. Gardner Red Algae

Former name: Acrochaetium amphiroae (K.M. Drew) G.F. Papenfuss Current name: Colaconema amphiroae (K.M. Drew) P.W. Gabrielson

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181. Harper, J.T. & Saunders, G.W. 2002a. A re-classiﬁcation of the Acrochaetiales based on molecular and morphological data, and establishment of the Colaconematales, ord. nov. British Phycological Journal 37: 463-475.

Acrochaetium angustum (K.M. Drew) G.F. Papenfuss

Drew, K.M. 1928. A revision of the genera Chantransia, Rhodochorton and Acrochaetium with descriptions of the marine species of Rhodochorton (Nägeli) gen. emend. on the Paciﬁc coast of North America. University of California Publications in Botany 14: 139-224, Plates 37-48.

Acrochaetium arcuatum (K.M. Drew) Tseng

Former name: Acrochaetium barbadense (Vickers) Børgesen sensu Abbott & Hollenberg 1976 Current name: Colaconema macounii (F.S. Collins) P.W. Gabrielson

Gabrielson, P.W., Widdowson, T.B., Lindstrom, S.C., Hawkes, M.W. & Scagel, R.F. 2000. Keys to the benthic marine algae and seagrasses of British Columbia, Southeast Alaska, Washington and Oregon. Phycological Contribution Department of Botany, University of British Columbia No. 5. Pp. iv + 189. Garbary, D.J., Hansen, G.I. & Scagel, R.F. 1983. The marine algae of British Columbia and northern Washington: division Rhodophyta (red algae), class Florideophyceae, orders Acrochaetiales and Nemaliales. Syesis 15 (Suppl. 1): 1-102. Harper, J.T. & Saunders, G.W. 2002a. A re-classiﬁcation of the Acrochaetiales based on molecular and morphological data, and establishment of the Colaconematales, ord. nov. British Phycological Journal 37: 463-475.

*Acrochaetium catenulatum M.A. Howe

Scagel, R.F., Gabrielson, P.W., Garbary, D.J., Golden, L., Hawkes, M.W., Lindstrom, S.C., Oliveira, J.C. & Widdowson, T.B. 1989. A synopsis of the benthic marine algae of British Columbia, southeast Alaska, Washington and Oregon. Phycological Contributions, University of British Columbia 3: vi + 532.

Former name: Acrochaetium coccineum (K.M. Drew) G.F. Papenfuss Current name: Colaconema coccineum (K.M. Drew) P.W. Gabrielson

Former name: Acrochaetium daviesii (Dillwyn) Nägeli Current name: Colaconema daviesii (Dillwyn) Stegenga

Stegenga, H. 1985. The marine Acrochaetiaceae (Rhodophyta) of southern Africa. South African Journal of Botany 51: 291-330.

Former name: Acrochaetium desmarestiae Kylin Current name: Colaconema desmarestiae (Kylin) P.W. Gabrielson

Acrochaetium microscopicum (Kützing) Nägeli

Former name: Acrochaetium paciﬁcum Kylin Current name: Colaconema paciﬁcum (Kylin) Woelkerling

Woelkerling, W.J. 1971. Morphology and taxonomy of the Audouinella complex (Rhodophyta) in southern Australia. Australian Journal of Botany (Suppl. 1): 1-91.

Former name: Acrochaetium pectinatum (Kylin) G. Hamel Current name: Colaconema pectinatum (Kylin) J.T. Harper & G.W. Saunders

Harper, J.T. & Saunders, G.W. 2002a. A re-classiﬁcation of the Acrochaetiales based on molecular and morphological data, and establishment of the Colaconematales, ord. nov. British Phycological Journal 37: 463-475.

Acrochaetium plumosum (K.M. Drew) G.M. Smith

Former name: Acrochaetium porphyrae (K.M. Drew) G.M. Smith Current name: Rhododrewia porphyrae (K.M. Drew) S.L. Clayden & G.W. Saunders

Former name: Acrochaetium rhizoideum (K.M. Drew) C.C. Jao Current name: Colaconema rhizoideum (K.M. Drew) P.W. Gabrielson

Former name: Acrochaetium subimmersum (Setchell & N.L. Gardner) G.F. Papenfuss Current name: Rhodonematella subimmersa (Setchell & N.L. Gardner) S.L. Clayden & G.W. Saunders

Clayden, S.L. & Saunders, G.W. 2010. Recognition of Rubrointrusa membranacea gen. et comb. nov., Rhodonematella subimmersa gen. et comb. nov. (with a reinterpretation of the life history) and the Meiodiscaceae fam. nov. within the Palmariales (Rhodophyta). Phycologia 49: 283-300.

Acrochaetium tenuissimum (F.S. Collins) G.F. Papenfuss

Former name: Acrochaetium thuretii (Bornet) Collins & Hervey Current name: Colaconema thuretii (Bornet) P.W. Gabrielson

Former name: Acrochaetium vagum (K.M. Drew) C.-C. Jao Current name: Acrochaetium arcuatum (K.M.Drew) C.K. Tseng

Clayden, S.L. & Saunders, G.W. 2014. A study of two Acrochaetium complexes in Canada with distinction of Rhododrewia gen. nov. (Acrochaetiales, Rhodophyta). Phycologia 53: 221-232.

Former name: Acrosorium uncinatum (Turner) Kylin Current name: Acrosorium ciliolatum (Harvey) Kylin

Womersley, H.B.S. 2003. The marine benthic ﬂora of southern Australia - Part IIID Ceramiales - Delesseriaceae, Sarcomeniaceae, Rhodomelaceae. Pp. 533. Canberra & Adelaide: Australian Biological Resources Study & State Herbarium of South Australia.

*Agardhiella subulata (C. Agardh) Kraft & Wynne

Hughey, J.R. and K.A. Miller. 2018. Noteworthy Collections: California. Agardhiella subulata, Colpomenia claytoniae, Pyropia suborbiculata. Madroño. In press.

Aglaothamnion cordatum (Børgesen) Feldmann-Mazoyer

Aglaothamnion endovagum (Setchell & N.L. Gardner) I.A. Abbott *Aglaothamnion tenuissimum (Bonnemaison) Feldmann-Mazoyer

Josselyn, M.N. & West, J.A. 1985. The distribution and temporal dynamics of the estuarine macroalgal community of San Francisco Bay. Hydrobiologia 129: 139-152.

Former name: Ahnfeltia gigartinoides J. Agardh Current name: Fredericqia decewii C.A. Maggs, L. Le Gall, F. Mineur, J. Provan & G.W. Saunders

Maggs, C.A., Le Gall, L., Mineur, F., Provan, J. & Saunders, G.W. 2013. Fredericqia deveauniensis, gen. et sp. nov. (Phyllophoraceae, Rhodophyta), a new cryptogenic species. Cryptogamie, Algologie 34: 273-296. Silva, P.C. & DeCew, T.C. 1992. Ahnfeltiopsis, a new genus in the Phyllophoraceae (Gigartinales, Rhodophyceae). Phycologia 31: 576-580.

Former name: Ahnfeltia plicata (Hudson) Fries sensu Abbott & Hollenberg 1976 Current name: Ahnfeltia fastigiata (Endlicher) Makienko

Makienko, V.F. 1970. K sistematike vidov Ahnfeltia Fries iz dal'nevostochnykh morej SSSR. Botanicheskij Zhurnal SSSR 55: 1077- 1087.

Former name: Amphiroa zonata Yendo Current name: Amphiroa beauvoisii Lamouroux

Norris, J.N. & Johansen, H.W. 1981. Articulated coralline algae of the Gulf of California, Mexico, I: Amphiroa Lamouroux. Smithsonian Contributions to the Marine Sciences 9: 1-29.

Amplisiphonia paciﬁca G.J. Hollenberg

Anisocladella paciﬁca Kylin

Antithamnion defectum Kylin

Lee, S.-R., Lee, I.K. & Suh, Y. 2005. Molecular evidence for recognizing Antithamnion sparsum (Ceramiales, Rhodophyta) at the species level. Phycologia 44: 530-535.

Antithamnion dendroideum G.M. Smith & G.J. Hollenberg

Antithamnion hubbsii E.Y. Dawson Athanasiadis, A. 2009. Typiﬁcation of Antithamnion nipponicum Yamada et Inagaki (Antithamnieae, Ceramioideae, Ceramiaceae, Ceramiales, Rhodophyta). Botanica Marina 52: 256-26.1 Cho, T.O., Won, B.Y. & Fredericq, S. 2006. Antithamnion nipponicum (Ceramiaceae, Rhodophyta), incorrectly known as A. pectinatum in western Europe, is a recent introduction along the North Carolina and Paciﬁc coasts of North America. European Journal of Phycology 40: 323-335.

Antithamnion kylinii N.L. Gardner

Antithamnionella breviramosa (E.Y. Dawson) Womersley & J.W. Bailey

Former name: Antithamnionella glandulifera (Kylin) E.M. Wollaston Current name: Antithamnionella spirographidis (Schiffner) E.M. Wollaston

Wollaston, E.M. 1968. Morphology and taxonomy of Southern Australian genera of Crouanieae Schmitz (Ceramiaceae, Rhodophyta). Australian Journal of Botany 16: 217-417. Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181.

Antithamnionella paciﬁca (Harvey) E.M. Wollaston

Former name: Antithamnionella paciﬁca var. uncinata (N.L. Gardner) E.M. Wollaston Current name: Antithamnionella paciﬁca (Harvey) E.M. Wollaston

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181.

*Apoglossum gregarium (E.Y. Dawson) M.J. Wynne

Wynne, M.J. 1985. Taxonomic notes on some Delesseriaceae (Rhodophyta) occurring in southern California and Mexico. Bulletin of the Southern California Academy of Sciences 84: 164-171. Stewart, J.G. 1974. Phrix: a new genus in Delesseriaceae (Rhodophyta). Phycologia 13: 139-147.

Former name: Arthrocardia silvae H.W. Johansen Current name: Chiharaea silvae (H.W. Johansen) P.T. Martone, S.C. Lindstrom, K.A. Miller & P.W. Gabrielson Martone, P.T., Lindstrom, S.C., Miller, K.A. & Gabrielson, P.W. 2012. Chiharaea and Yamadaia (Corallinales, Rhodophyta) represent reduced and recently derived articulated coralline morphologies. Journal of Phycology 48: 859-868.

*Asparagopsis armata Harvey

Ní Chualáin, F., Maggs, C.A., Saunders, G.W. & Guiry, M.D. 2004. The invasive genus Asparagopsis (Bonnemaisoniaceae, Rhodophyta): molecular systematics, morphology, and ecophysiology of Falkenbergia isolates. Journal of Phycology 40: 1112-1126.

Asparagopsis taxiformis (Delile) Trevisan

Asterocolax gardneri (Setchell) J. Feldmann & G. Feldmann

Former name: Asterocytis ramosa (Thwaites) F. Schmitz Current name: Chroodactylon ornatum (C. Agardh) Basson

Basson, P.W. 1979. Marine algae of the Arabian Gulf coast of Saudi Arabia (second half). Botanica Marina 22: 65-82.

Former name: Bangia fuscopurpurea (Dillwyn) Lyngbye Current name: "Bangia"

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181. Sutherland, J.E., Lindstrom, S.C., Nelson, W.A., Brodie, J., Lynch, M.D.J., Hwang, M.S., Choi, H.-G., Miyata, M., Kikuchi, N., Oliveira, M.C., Farr, T., Neefus, C.D., Mols-Mortensen, A., Milstein, D., Müller, K.M. 2011. A new look at an ancient order: generic revision of the Bangiales (Rhodophyta). Journal of Phycology 47: 1131-1151.

*"Bangia" maxima Gardner

Lynch, M.D.J., Sheath, R.G. & Müller, K.M. 2008. Phylogenetic position and ISSR-estimated intraspeciﬁc genetic variation of Bangia maxima (Bangiales, Rhodophyta). Phycologia 47: 599-613. Sutherland, J.E., Lindstrom, S.C., Nelson, W.A., Brodie, J., Lynch, M.D.J., Hwang, M.S., Choi, H.-G., Miyata, M., Kikuchi, N., Oliveira, M.C., Farr, T., Neefus, C.D., Mols-Mortensen, A., Milstein, D., Müller, K.M. 2011. A new look at an ancient order: generic revision of the Bangiales (Rhodophyta). Journal of Phycology 47: 1131-1151.

*"Bangia" vermicularis Harvey

Besa papillaeformis Setchell

Besa stipitata G.J. Hollenberg & I.A. Abbott

Binghamia californica J. Agardh

Binghamia forkii (E.Y. Dawson) P.C. Silva

*Binghamiopsis caespitosa I.K. Lee, J.A. West, & M.H. Hommersand

Lee, I.K., West, J.A. & Hommersand, M.H. 1988. Binghamiopsis caespitosa gen. et sp. nov. (Lomentariaceae, Rhodophyceae) from the eastern Paciﬁc. Korean Journal of Phycology 3: 1-13.

Blinksia californica G.J. Hollenberg & I.A. Abbott

Bonnemaisonia geniculata N.L. Gardner

Bonnemaisonia hamifera Hariot

Former name: Bonnemaisonia nootkana (Esper) P.C. Silva sensu Abbott & Hollenberg 1976 Current name: Bonnemaisonia californica Buffham

Silva, P.C., Basson, P.W. & Moe, R.L. 1996. Catalogue of the benthic marine algae of the Indian Ocean. University of California Publications in Botany 79: 1-1259. Buffham, T.H. 1896. On Bonnemaisonia hamifera, Hariot, in Cornwall. Journal of the Quekett Microscopical Club Ser. 2: 177-182.

Bornetia californica I.A. Abbott Bossiella californica (Decaisne) P.C. Silva

Hind, K.R., Gabrielson, P.W., & Saunders, G.W. 2014. Molecular-assisted alpha taxonomy reveals pseudocryptic diversity among species of Bossiella (Corallinales, Rhodophyta) in the eastern Paciﬁc Ocean. Phycologia 53: 443-456.

Former name: Bossiella californica subsp. schmittii (Manza) H.W. Johansen Current name: Bossiella schmittii (Manza) H.W. Johansen

Johansen, H.W. 1971. Changes and additions to the articulated coralline ﬂora of California. Phycologia 10: 241-249. Hind, K.R., Gabrielson, P.W., & Saunders, G.W. 2014. Molecular-assisted alpha taxonomy reveals pseudocryptic diversity among species of Bossiella (Corallinales, Rhodophyta) in the eastern Paciﬁc Ocean. Phycologia 53: 443-456.

Bossiella chiloensis (Decaisne) H.W. Johansen

*Bossiella exarticulata K.R. Hind, P.T. Martone, C. Jensen, & P.W. Gabrielson

Hind, K.R., P.W. Gabrielson, C.P. Jensen, & P.T. Martone. 2018. Evolutionary reversals in Bossiella (Corallinales, Rhodophyta): ﬁrst report of a coralline genus with both geniculate and nongeniculate species

*Bossiella frondifera Manza

Hind, K.R., K.A. Miller, M. Young,, C. Jensen., P.W. Gabrielson and P.T. Martone. 2015. Resolving cryptic species of Bossiella (Corallinales, Rhodophyta) using contemporary and historical DNA. American Journal of Botany 102: 1912-1930.

*Bossiella heteroforma K.R. Hind, P.W. Gabrielson & G.W. Saunders

*Bossiella mayae P.W. Gabrielson, K.R. Hind, Martone, & C.P. Jensen

Bossiella orbigniana (Decaisne) P.C. Silva

Former name: Bossiella orbigniana subsp. dichotoma (Manza) H.W. Johansen Current name: Bossiella dichotoma (Manza) P.C. Silva

Silva, P.C. 1957. Notes on Paciﬁc marine algae. Madroño 14: 41-51. Hind, K.R., Gabrielson, P.W., & Saunders, G.W. 2014. Molecular-assisted alpha taxonomy reveals pseudocryptic diversity among species of Bossiella (Corallinales, Rhodophyta) in the eastern Paciﬁc Ocean. Phycologia 53: 443-456.

Bossiella plumosa (Manza) P.C. Silva

Former name: Botryocladia hancockii E.Y. Dawson Current name: Irvinea hancockii (E.Y. Dawson) Wilkes, McIvor & M. Guiry

Wilkes, R.J., McIvor, L. & Guiry, M.D. 2006. Vegetative morphology and rbcL phylogeny of some members of the genera Botryocladia and Irvinea (Rhodymeniaceae, Rhodophyta). Phycologia 45: 481-494.

Botryocladia neushulii E.Y. Dawson

Botryocladia pseudodichotoma (Farlow) Kylin

Former name: Botryoglossum farlowianum (J. Agardh) De Toni Current name: Cryptopleura ruprechtiana (J. Agardh) Kylin

Hawkes, M.W., Tanner, C.E. & Lebednik, P.A. 1978. The benthic marine algae of northern British Columbia. Syesis 11: 81-115. Ver Steeg, J. & Josselyn, M.N. 1983. Taxonomic and morphological studies of Cryptopleura (Rhodophyta, Delesseriaceae). Wasmann J. Biol. 41: 97- 107. Wynne, M.J. 1987. Records and notes on Alaskan marine algae. II. Contributions from the University of Michigan Herbarium 16: 223-232. Hansen, G.I. 1997. A revised checklist and preliminary assessment of the macrobenthic marine algae and seagrasses of Oregon. In: Conservation and Management of Native Flora and Fungi. (Kaye, T.N., Liston, A., Love, R.M., Luoma, D.L., Meinke, R.J. & Wilson, M.V., eds.), pp. 175-200. Corvallis: Native Plant Society of Oregon.

Former name: Botryoglossum farlowianum var. anomalum G.J. Hollenberg & I.A. Abbott Current name: Cryptopleura ruprechtiana (J. Agardh) Kylin

Former name: Botryoglossum ruprechtianum (J. Agardh) De Toni Current name: Cryptopleura ruprechtiana (J. Agardh) Kylin

Kylin, H. 1924. Studien über die Delesseriaceen. Acta Universitatis Lundensis 20(6): 1-111.

Branchioglossum undulatum E.Y. Dawson

Former name: Branchioglossum woodii (J. Agardh) Kylin Current name: Branchioglossum bipinnatiﬁdum (Montagne) M.J. Wynne

Wynne, M.J. 1983. The current status of genera in the Delesseriaceae (Rhodophyta). Botanica Marina 26: 437-450.

Calliarthron cheilosporioides Manza

Calliarthron tuberculosum (Postels & Ruprecht) E.Y. Dawson

Callithamnion acutum Kylin

Callithamnion biseriatum Kylin

Callithamnion catalinense E.Y. Dawson

Callithamnion paschale Børgesen

Callithamnion pikeanum Harvey

Former name: Callithamnion rupicolum C.L. Anderson Current name: Callithamnion rupicola C.L. Anderson

*Callithamnion ramosissimum N.L. Gardner

Stewart, J.G. 1991. Marine algae and seagrasses of San Diego County. California Sea Grant College, University of California, La Jolla, Calif. Report No. T-CSGCP-020. Pp. 197. Callocolax fungiformis Kylin

Callophyllis crenulata Setchell

*Callophyllis dissecta Setchell & Swezy

*Callophyllis edentata Kylin

Former name: Callophyllis ﬁrma (Kylin) R.E. Norris Current name: Salishia ﬁrma (Kylin) B.E. Clarkston & G.W. Saunders

Clarkston, B.E. & Saunders, G.W. 2012. An examination of the red algal genus Pugetia (Kallymeniaceae, Gigartinales), with descriptions of Salishia ﬁrma gen. & comb. nov., Pugetia cryptica sp. nov. and Beringia wynnei sp. nov. Phycologia 51: 33-61.

Callophyllis ﬂabellulata Harvey

Clarkston, B.E. & Saunders, G.W. 2013. Resolving species diversity in the red algal genus Callophyllis (Kallymeniaceae, Gigartinales) in Canada using molecular assisted alpha taxonomy. European Journal of Phycology 48: 27-46. Wynne, M.J. & Heine, J.N. 1992. Collections of marine red algae from St. Matthew and St. Lawrence Islands, the Bering Sea. Nova Hedwigia 55: 55- 97.

Callophyllis heanophylla Setchell Clarkston, B.E. & Saunders, G.W. 2013. Resolving species diversity in the red algal genus Callophyllis (Kallymeniaceae, Gigartinales) in Canada using molecular assisted alpha taxonomy. European Journal of Phycology 48: 27-46.

Callophyllis linearis (Kylin) I.A. Abbott & R.E. Norris

*Callophyllis odonthalioides Setchell

Callophyllis obtusifolia J. Agardh

Callophyllis pinnata Setchell & Swezy

*Callophyllis schneideri B.E. Clarkston & G.W. Saunders

Callophyllis thompsonii Setchell

*Callophyllis variegata (Bory de Saint-Vincent) Kützing

Carpopeltis bushiae (Farlow) Kylin

*Former name: Caulacanthus ustulatus (Turner) Kützing Current name: Caulacanthus okamurae Yamada

Mineur, F. 2010. Unpublished data. Zuccarello, G.C., West, J.A. & Rueness, J. 2002. Phylogeography of the cosmopolitan red alga Caulacanthus ustulatus (Caulacanthaceae, Gigartinales). Phycological Research 50: 163-172. Miller, K.A. 2004. California's non-native seaweeds. Fremontia. A Journal of the California Native Plant Society 32: 10-15.

Centroceras clavulatum (C. Agardh) Montagne

Ceramium afﬁne Setchell & N.L. Gardner

Ceramium avalonae E.Y. Dawson

Ceramium californicum J. Agardh

Ceramium camouii E.Y. Dawson

Ceramium caudatum Setchell & N.L. Gardner

Ceramium clarionense Setchell & N.L. Gardner

Ceramium codicola J. Agardh

Former name: Ceramium eatonianum (Farlow) De Toni Current name: Corallophila eatoniana (Farlow) T.O. Cho, H.-G. Choi, G.I. Hansen, & S.M. Boo

Cho, T.O., Choi, H.-G., Hansen, G.I. & Boo, S.M. 2000. Corallophila eatoniana comb. nov. (Ceramiaceae, Rhodophyta) from the Paciﬁc coast of North America. Phycologia 39: 323-331.

Ceramium equisetoides E.Y. Dawson *Ceramium kondoi Yendo

Cho, T.O., Boo, S.M. & Hansen, G.I. 2002. Structure and reproduction of the genus Ceramium (Ceramiales, Rhodophyta) from Oregon, USA. Phycologia 40: 547-571.

*Ceramium sungminbooii J.R. Hughey & G.H. Boo

Hughey, J.R. & Boo, G.H. 2016. Genomic and phylogenetic analysis of Ceramium cimbricum (Ceramiales, Rhodophyta) from the Atlantic and Paciﬁc Oceans supports the naming of a new invasive Paciﬁc entity Ceramium sungminbooi sp. nov. Botanica Marina 15(4): 211-222

Former name: Ceramium taylorii E.Y. Dawson Current name: Gayliella taylorii (E.Y. Dawson) T.O. Cho & S.M. Boo

Cho, T.O., Boo, S.M., Hommersand, M.H., Maggs, C.A., McIvor, L. & Fredericq, S. 2008. Gayliella gen. nov. in the tribe Ceramieae (Ceramiaceae, Rhodophyta) based on molecular and morphological evidence. Journal of Phycology 44: 721-738.

Ceramium gardneri Kylin

*Ceramium interruptum Setchell & N.L. Gardner

Cho, T.O., Fredericq, S., Murray, S.N. & Boo, S.M. 2003. New insights in the taxonomy of the Ceramium sinicola complex: resurrection of C. interruptum (Ceramiaceae, Rhodophyta). Journal of Phycology 39: 775- 788.

Ceramium paciﬁcum (Collins) Kylin

Ceramium procumbens Setchell & N.L. Gardner

Ceramium serpens Setchell & N.L. Gardner

Ceramium sinicola Setchell & N.L. Gardner

*Ceramium viscainoense E.Y. Dawson

Murray, S.N. & Littler, M.M. 1989. Seaweeds and seagrasses of southern California: distributional lists for twenty-one rocky intertidal sites. Bulletin of the Southern California Academy of Sciences 88: 61-79. Ceramium zacae Setchell & N.L. Gardner

Champia parvula (C. Agardh) Harvey

Former name: Chiharaea bodegensis H.W. Johansen Current name: Chiharaea americana f. bodegensis (H.W. Johansen) K. Hind & G.W. Saunders

Hind, K.R. & Saunders, G.W. 2013b. Molecular markers from three organellar genomes unravel complex taxonomic relationships within the coralline algal genus Chiharaea (Corallinales, Rhodophyta). Molecular Phylogenetics and Evolution 67: 529-540.

*Chiharaea rhododactyla K. Hind & G.W. Saunders

*Chondracanthus bajacalifornicus J.R. Hughey & M.H. Hommersand

Hughey, J.R. & Hommersand, M.H. 2008. Morphological and molecular systematic study of Chondracanthus (Gigartinaceae, Rhodophyta) from Paciﬁc North America. Phycologia 47: 124-155.

*Chondracanthus kjeldsenii J.R. Hughey & M.H. Hommersand

Hughey, J.R. & Hommersand, M.H. 2008. Morphological and molecular systematic study of Chondracanthus (Gigartinaceae, Rhodophyta) from Paciﬁc North America. Phycologia 47: 124-155.

*Chondracanthus serratus (N.L. Gardner) J.R. Hughey & M.H. Hommersand

Hughey, J.R. & Hommersand, M.H. 2008. Morphological and molecular systematic study of Chondracanthus (Gigartinaceae, Rhodophyta) from Paciﬁc North America. Phycologia 47: 124-155.

Chondria arcuata G.J. Hollenberg

Former name: Chondria californica (Collins) Kylin Current name: Chondria acrorhizophora Setchell & N.L. Gardner

Silva, P.C. 1991. Notes on the type of specimens of red algal parasites described from California by W.A. Setchell. Taxon 40: 463-470.

Chondria dasyphylla (Woodward) C. Agardh

Chondria decipiens Kylin

Former name: Chondria nidiﬁca Harvey Current name: Neochondria nidiﬁca (Harvey) S. Sutti, T. Abe, K.A. Miller & K. Kogame

Sutti, S., Tani, M., Yamagishi, Y., Abe, T., Miller, K.A. & Kogame, K. 2018. Neochondria gen. nov. (Rhodomelaceae, Rhodophyta), a segregate of Chondria including N. ammophila sp. nov. and N. nidiﬁca comb. nov.. Phycologia 57: 262-272.

Chondria oppositiclada E.Y. Dawson

Former name: Choreocolax polysiphoniae Reinsch sensu Abbott & Hollenberg 1976 Current name: Leachiella paciﬁca Kugrens

Kugrens, P. 1982. Leachiella paciﬁca, gen. et sp. nov., a new parasitic red alga from Washington and California. American Journal of Botany 69: 306- 319.

Choreonema thuretii (Bornet) F. Schmitz

Former name: Clathromorphum parcum (Setchell & Foslie) W.H. Adey Current name: Callilithophytum parcum (Setchell & Foslie) P.W. Gabrielson, W.H. Adey, G.P. Johnson & J.J. Hernandez-Kantun

Adey, W.H., Hernandez-Kantun, J.J., Johnson, G. & Gabrielson, P.W. 2015. DNA sequencing, anatomy, and calciﬁcation patterns support a monophyletic, subarctic, carbonate reef-forming Clathromorphum (Hapalidiaceae, Corallinales, Rhodophyta). Journal of Phycology 51(1): 189-203.

Former name: Coeloseira compressa G.J. Hollenberg Current name: Gastroclonium compressum (G.J. Hollenberg) C.F. Chang & B.M. Xia

Chang, C.F. & Xia, B.M. 1978. A new species of Gastroclonium from the Xisha Islands, Guangdong Province, China. Oceanol. Limnol. Sin. 9: 209- 214. Former name: Coeloseira parva G.J. Hollenberg Current name: Gastroclonium parvum (G.J. Hollenberg) C.F. Chang & B.M. Xia

Chang, C.F. & Xia, B.M. 1978. A new species of Gastroclonium from the Xisha Islands, Guangdong Province, China. Oceanol. Limnol. Sin. 9: 209- 214.

Colacodasya californica G.J. Hollenberg

*Colaconema bonnemaisoniae Batters

*Colaconema gymnogongri (Setchell & N.L. Gardner) P.W. Gabrielson

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181. Garbary, D.J., Hansen, G.I. & Scagel, R.F. 1983. The marine algae of British Columbia and northern Washington: division Rhodophyta (red algae), class Florideophyceae, orders Acrochaetiales and Nemaliales. Syesis 15 (Suppl. 1): 1-102.

*Colaconema plumosum (K.M. Drew) Woelkerling

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181.

*Colaconema plumosum var. variabile (K.M. Drew) P.W. Gabrielson

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181.

Constantinea simplex Setchell

Corallina bathybentha E.Y. Dawson Former name: Corallina frondescens Postels & Ruprecht Current name: Bossiella frondescens (Postels & Ruprecht) E.Y. Dawson

Corallina ofﬁcinalis var. chilensis (Decaisne) Kützing

Corallina pinnatifolia (Manza) E.Y. Dawson

Corallina polysticha E.Y. Dawson

Corallina vancouveriensis Yendo

Coriophyllum expansum Setchell & N.L. Gardner

Former name: Cruoria profunda E.Y. Dawson Current name: Opuntiella californica (Farlow) Kylin

DeCew, T.C., West, J.A. & Silva, P.C. 1992. The life history and anatomy of Opuntiella californica (Gigartinales, Rhodophyceae). Phycologia 31: 462- 469.

Former name: Cruoriopsis aestuarii G.J. Hollenberg Current name: Gloiosiphonia verticillaris Farlow

DeCew, T.C., West, J.A. & Ganesan, E.K. 1981. The life history and developmental morphology of two species of Gloiosiphonia (Rhodophyta: Cryptonemiales, Gloiosiphoniaceae) from the Paciﬁc coast of North America. Phycologia 20: 415-423.

Cryptonemia angustata (Setchell & N.L. Gardner) E.Y. Dawson

Cryptonemia borealis Kylin

Cryptonemia obovata J. Agardh

Former name: Cryptonemia ovalifolia Kylin Current name: Isabbottia ovalifolia (Kylin) M.S. Balakrishnan

Balakrishnan, M.S. 1980. Taxonomic studies on U.S. Paciﬁc Cryptonemiaceae I. Two new genera: Isabbottia and Norrissia. In: Taxonomy of algae (Desikachary, T.V. & Rao, V.N., eds.), pp. 273-286. University of Madras.

Former name: Cryptopleura corallinara (Nott) Gardner Current name: Cryptopleura corallinarum (Nott) Gardner

Cryptopleura crispa Kylin

Cryptopleura dichotoma N.L. Gardner

Cryptopleura lobulifera (J. Agardh) Kylin

Cryptopleura rosacea I.A. Abbott

Cryptopleura violacea (J. Agardh) Kylin

Cryptosiphonia woodii (J. Agardh) J. Agardh

*Crusticorallina adhaerens K.R. Hind, Martone, C.P. Jensen & P.W. Gabrielson

Hind, K.R., P.W. Gabrielson, C.P. Jensen, and P.T. Martone. 2016. Crusticorallina gen. nov., a nongeniculate genus in the subfamily Corallinoideae (Corallinales, Rhodophyta)

Cumagloia andersonii (Farlow) Setchell & N.L. Gardner

Cumathamnion sympodophyllum M.J. Wynne & Daniels

*Dasya sessilis Yamada

Hughey, J.R., Miller, K.A. & Lyman, A. 2009. Noteworthy collection. Madroño 56: 293-295.

Dasya sinicola (Setchell & N.L. Gardner) E.Y. Dawson

Dasya sinicola var. abyssicola (E.Y. Dawson) E.Y. Dawson

Dasya sinicola var. californica (N.L. Gardner) E.Y. Dawson

*Dasya sp.

Hughey, J.R., Miller, K.A. & Lyman, A. 2009. Noteworthy collection. Madroño 56: 293-295. Former name: Delesseria decipiens J. Agardh Current name: Cumathamnion decipiens (J. Agardh) M.J. Wynne & G.W. Saunders

Dermocorynus occidentalis G.J. Hollenberg

Dilsea californica (J. Agardh) Kuntze

*Dilsea pygmaea (Setchell) Setchell

Saunders, G.W. 2008. A DNA barcode examination of the red algal family Dumontiaceae in Canadian waters reveals substantial cryptic species diversity. 1. The foliose Dilsea-Neodilsea complex and Weeksia. Botany 86: 773-789.

Dudresnaya colombiana W.R. Taylor

Former name: Endocladia muricata (Postels & Ruprecht) J. Agardh Current name: Endocladia muricata (Endlicher) J. Agardh

Erythrocladia irregularis Rosenvinge

Former name: Erythrocladia subintegra Rosenvinge Current name: Sahlingia subintegra (Rosenvinge) Kornmann

Kornmann, P. 1989. Sahlingia nov. gen. based on Erythrocladia subintegra (Erythropeltidales, Rhodophyta). British Phycological Journal 24: 223-228.

Erythrocystis saccata (J. Agardh) P.C. Silva

Erythroglossum californicum (J. Agardh) J. Agardh

Erythrophyllum delesserioides J. Agardh

Former name: Erythrophyllum splendens Doty Current name: Erythrophyllum delesserioides J. Agardh

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181. Erythrotrichia carnea (Dillwyn) J. Agardh

Former name: Erythrotrichia parksii N.L. Gardner Current name: Erythrotrichia carnea (Dillwyn) J. Agardh

Desikachary, T.V., Krishnamurthy, V. & Balakrishnan, M.S. 1990. Rhodophyta. II. Taxonomy part. Part IIA. Pp. vi + 279, 51 ﬁgs., XLII plates. Madras, India: Madras Science Foundation.

Erythrotrichia porphyroides N.L. Gardner

Former name: Erythrotrichia pulvinata N.L. Gardner Current name: Erythrotrichia carnea (Dillwyn) J. Agardh

Brodie, J. & Irvine, L.M. 2003. Seaweeds of the British Isles. Volume 1. Rhodophyta. Part 3B. Bangiophycidae. Pp. xiii + 167 + map. Andover: Intercept.

Former name: Erythrotrichia tetraseriata N.L. Gardner Current name: Erythrotrichia carnea (Dillwyn) J. Agardh

Desikachary, T.V., Krishnamurthy, V. & Balakrishnan, M.S. 1990. Rhodophyta. II. Taxonomy part. Part IIA. Pp. vi + 279, 51 ﬁgs., XLII plates. Madras, India: Madras Science Foundation.

Erythrotrichia welwitschii (Ruprecht) Batters

Farlowia compressa J. Agardh

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181.

Farlowia conferta (Setchell) I.A. Abbott

Farlowia mollis (Harvey & J.W. Bailey) Farlow & Setchell

Former name: Fauchea fryeana Setchell Current name: Gloiocladia fryeana (Setchell) N. Sánchez & C. Rodríguez-Prieto

Rodríguez-Prieto, C., Freshwater, D.W. & Sánchez, N. 2007. Vegetative and reproductive morphology of Gloiocladia repens (C. Agardh) Sánchez & Rodríguez-Prieto comb. nov. (Rhodymeniales, Rhodophyta), with a taxonomic re-assessment of the genera Fauchea and Gloiocladia. European Journal of Phycology 42: 145-162.

Former name: Fauchea galapagensis W.R. Taylor Current name: Gloiocladia galapagensis (W.R. Taylor) N. Sánchez & C. Rodríguez- Prieto

Former name: Fauchea laciniata J. Agardh Current name: Gloiocladia laciniata (J. Agardh) N. Sánchez & C. Rodríguez-Prieto

Faucheocolax attenuata Setchell

Fosliella paschalis (Lemoine) Setchell & N.L. Gardner

Fryeella gardneri (Setchell) Kylin

*Fuscifolium papenfussii (Krishnamurthy) S.C. Lindstrom

Gardneriella tuberifera Kylin

Former name: Coeloseira compressa G.J. Hollenberg Current name: Gastroclonium compressum (G.J. Hollenberg) C.F. Chang & B.M. Xia

Chang, C.F. & Xia, B.M. 1978. A new species of Gastroclonium from the Xisha Islands, Guangdong Province, China. Oceanol. Limnol. Sin. 9: 209- 214. Former name: Gastroclonium coulteri (Harvey) Kylin Current name: Neogastroclonium subarticulatum (Turner) L. Le Gall, Dalen & G.W. Saunders

Le Gall, L., Dalen, J.L. & Saunders, G.W. 2008. Phylogenetic analyses of the red algal order Rhodymeniales supports recognition of the Hymenocladiaceae fam. nov., Fryeellaceae fam. nov., and Neogastroclonium gen. nov. Journal of Phycology 44: 1556-1571.

Former name: Coeloseira parva G.J. Hollenberg Current name: Gastroclonium parvum (G.J. Hollenberg) C.F. Chang & B.M. Xia

Chang, C.F. & Xia, B.M. 1978. A new species of Gastroclonium from the Xisha Islands, Guangdong Province, China. Oceanol. Limnol. Sin. 9: 209- 214.

Former name: Gelidiocolax mammillata Fan & G.F. Papenfuss Current name: Gelidiocolax mammillatus Fan & G.F. Papenfuss

Former name: Gelidiocolax microsphaerica N.L. Gardner Current name: Gelidiocolax microsphaericus N.L. Gardner

Gelidium arborescens N.L. Gardner

Gelidium coulteri Harvey

*Gelidium gabrielsonii J.R. Hughey & G.H. Boo

*Gelidium kathyanniae J.R. Hughey & G.H. Boo

Gelidium nudifrons N.L. Gardner

Gelidium purpurascens N.L. Gardner

Former name: Gelidium pusillum (Stackhouse) Le Jolis sensu Abbott & Hollenberg 1976 Current name: Gelidium coulteri Harvey

Boo, G.H., Hwang, I.K., Ha, D.S., Miller, K.A., Kogame, K., Cho, G.Y., Kim, J.Y. & Boo, S.M. 2016. Phylogeny and distribution of the genus Pikea (Gigartina, Rhodophyta) with special reference to P. yoshizakii from Korea. Phycologia 55(1): 3-11.

Gelidium robustum (N.L. Gardner) G.J. Hollenberg & I.A. Abbott *Gelidium vagum Okamura

Hughey, J.R., Kieldsen, C.K., Silva, P.C., Moe, R.L. & DeCew, T.C. 1996. Noteworthy collections. California. Madroño 43: 432.

Former name: Gigartina agardhii Setchell & N.L. Gardner Current name: Mastocarpus agardhii (Setchell & N.L. Gardner) S.C. Lindstrom, J.R. Hughey & P.T. Martone

Lindstrom, S.C., Hughey, J.R. & Martone, P.T. 2011. New, resurrected and redeﬁned species of Mastocarpus (Phyllophoraceae, Rhodophyta) from the northeast Paciﬁc. Phycologia 50: 661-683.

Former name: Gigartina canaliculata Harvey Current name: Chondracanthus canaliculatus (Harvey) M. Guiry

Former name: Gigartina corymbifera (Kützing) J. Agardh Current name: Chondracanthus corymbiferus (Kützing) M. Guiry

Former name: Gigartina exasperata Harvey & J.W. Bailey Current name: Chondracanthus exasperatus (Harvey & J.W. Bailey) J.R. Hughey

Hughey, J.R., Dudash, R. & Kjeldsen, C.K. 1996. A ﬁeld and molecular systematic study on species of Chondracanthus (Gigartinales, Rhodophyceae) from Paciﬁc North America. Journal of Phycology 32: 22- 23.

Former name: Gigartina harveyana (Kützing) Setchell & N.L. Gardner Current name: Chondracanthus harveyanus (Kützing) M. Guiry

Former name: Gigartina leptorhynchos J. Agardh Current name: Mazzaella leptorhynchos (J. Agardh) G.L. Leister

Former name: Gigartina papillata (C. Agardh) J. Agardh Current name: Mastocarpus papillatus (C. Agardh) Kützing

Guiry, M.D., West, J.A., Kim, D.H. & Masuda, M. 1984. Reinstatement of the genus Mastocarpus Kützing (Rhodophyta). Taxon 33: 53-63.

Former name: Gigartina spinosa (Kützing) Harvey Current name: Chondracanthus spinosus (Kützing) M. Guiry

Former name: Gigartina tepida G.J. Hollenberg Current name: Chondracanthus tepidus (G.J. Hollenberg) M. Guiry

Former name: Gigartina volans (C. Agardh) J. Agardh Current name: Mazzaella volans (C. Agardh) S. Fredericq

*Gloiocladia media (Kylin) Filloramo and G.W.Saunders

Filloramo, G.V. & Saunders, G.W. 2018. Assessment of the order Rhodymeniales (Rhodophyta) from British Columbia using an integrative taxonomic approach reveals overlooked and cryptic species diversity. Botany 96: 359-383.

Gloiopeltis furcata (Postels & Ruprecht) J. Agardh

Gloiosiphonia californica (Farlow) J. Agardh

Former name: Gloiosiphonia capillaris (Hudson) Berkeley Current name: Gloiosiphonia californica (Farlow) J. Agardh

Gloiosiphonia verticillaris Farlow

Gonimophyllum skottsbergii Setchell

Goniotrichopsis sublittoralis G.M. Smith

Former name: Goniotrichum alsidii (Zanardini) M.A. Howe Current name: Stylonema alsidii (Zanardini) K.M. Drew

Drew, K.M. 1956. Conferva ceramicola Lyngbye. Botanisk Tidsskrift 53: 67-74.

Former name: Goniotrichum cornu-cervi (Reinsch) Hauck Current name: Stylonema cornu-cervi Reinsch

Brodie, J. & Irvine, L.M. 2003. Seaweeds of the British Isles. Volume 1. Rhodophyta. Part 3B. Bangiophycidae. Pp. xiii + 167 + map. Andover: Intercept.

Former name: Gracilaria andersonii (Grunow) Kylin sensu Abbott & Hollenberg 1976 Current name: Gracilaria papenfussii I.A. Abbott

Abbott, I.A. 1983. Some species of Gracilaria from California. Taxon 32: 561-564.

Gracilaria robusta Setchell

Former name: Gracilaria sjoestedtii Kylin Current name: Gracilariopsis andersonii (Grunow) E.Y. Dawson

Abbott, I.A. 1983. Some species of Gracilaria from California. Taxon 32: 561-564. Gurgel, C.F., Liao, L.M., Fredericq, S. & Hommersand, M.H. 2003. Systematics of Gracilariopsis (Gracilariales, Rhodophyta) based on rbcL sequence analyses and morphological evidence. Journal of Phycology 39: 154-171.

Gracilaria textorii var. cunninghamii (Farlow) E.Y. Dawson

Gracilaria turgida E.Y. Dawson

Gracilaria veleroae E.Y. Dawson

*Former name: Gracilaria vermiculophylla (Ohmi) G.F. Papenfuss *Current name: Agarophyton vermiculophyllum (H. Ohmi) C.F.D. Gurgel, J.N. Norris & S. Fredericq

Goff, L.J., Moon, D.A. & Coleman, A.W. 1994. Molecular delineation of species and species relationships in the red algal agarophytes Gracilariopsis and Gracilaria (Gracilariales). Journal of Phycology 30: 521-537. Bellorin, A.M., Oliveira, M.C. & Oliveira, E.C. 2004. Gracilaria vermiculophylla: A western Pacific species of Gracilariaceae (Rhodophyta) first recorded from the eastern Pacific. Phycological Research 52: 69-79. Hughey, J.R. 2013. Noteworthy collections. California. Gracilariopsis chorda, Ulva pertusa, Ulva clathratioides, Gracilaria vermiculophylla. Madroño 60: 57-59. Krueger-Hadfield, S.A., Stephens, T.A., Ryan, W.H. & Heiser, S. 2018. Everywhere you look, everywhere you go, there's an estuary invaded by the red seaweed Gracilaria vermiculophylla (Ohmi) Papenfuss, 1967. BioInvasions Records 7(4): 343-355. Gurgel, C.F.D., Norris, J.N., Schmidt, W.E., Le, H.N. & Fredericq, S. 2018. Systematics of the Gracilariales (Rhodophyta) including new subfamilies, tribes, subgenera, and two new genera, Agarophyton gen. nov. and Crassa gen. nov. Phytotaxa 374: 1-23.

Former name: Gracilaria verrucosa (Hudson) G.F. Papenfuss sensu Abbott & Hollenberg 1976 Current name: Gracilaria paciﬁca I.A. Abbott

Abbott, I.A. 1985. New species of Gracilaria Grev. (Gracilariaceae, Rhodophyta) from California and Hawaii. In Taxonomy of Economic Seaweeds with reference to some Paciﬁc and Caribbean species (Abbott, I.A. & Norris, J.N., eds.), California Sea Grant College Program, pp. 115- 121.

Former name: Gracilariophila gardneri Setchell Current name: Gracilaria gardneri (Setchell) Gurgel, J.N. Norris et Fredericq

Gurgel, C.F.D., Norris, J.N., Schmidt, W.E., Le, H.N. & Fredericq, S. 2018. Systematics of the Gracilariales (Rhodophyta) including new subfamilies, tribes, subgenera, and two new genera, Agarophyton gen. nov. and Crassa gen. nov. Phytotaxa 374: 1-23.

Former name: Gracilariophila oryzoides Setchell & Wilson Current name: Gracilariopsis oryzoides (Setchell et H.L. Wilson) Gurgel, J.N.Norris et Fredericq

*Gracilariopsis chorda (Holmes) Ohmi

Hughey, J.R. 2013. Noteworthy collections. California. Gracilariopsis chorda, Ulva pertusa, Ulva clathratioides, Gracilaria vermiculophylla. Madroño 60: 57-59.

*Grateloupia asiatica S. Kawaguchi & H.W. Wang

Hughey, J.R. 2013. Noteworthy collections. California. Gracilariopsis chorda, Ulva pertusa, Ulva clathratioides, Gracilaria vermiculophylla. Madroño 60: 57-59.

Former name: Grateloupia doryphora (Montagne) M.A. Howe sensu Abbott & Hollenberg 1976 Current name: Grateloupia californica Kylin

Gavio, B. & Fredericq, S. 2002. Grateloupia turuturu (Halymeniaceae, Rhodophyta) is the correct name of the non-native species in the Atlantic known as Grateloupia doryphora. European Journal of Phycology 37: 349- 360.

*Grateloupia turuturu Yamada Hughey, J.R., Miller, K.A. & Lyman, A. 2009. Noteworthy collection. Madroño 56: 293-295. Miller, K.A., Aguilar-Rosas, L.E. & Pedroche, F.F. 2011. A review of non- native seaweeds from California, USA and Baja California, Mexico. Hidrobiologica 21:240-254.

Former name: Grateloupia setchellii Kylin Current name: Norrissia setchellii (Kylin) Balakrishnan

Former name: Grifﬁthsia furcellata J. Agardh Current name: Anotrichium furcellatum (J. Agardh) R.N. Baldock

Baldock, R.N. 1976. The Grifﬁthsieae group of the Ceramiaceae (Rhodophyta) and its southern Australian representatives. Australian Journal of Botany 24: 509-593.

Grifﬁthsia paciﬁca Kylin

Gymnogongrus crustiformis E.Y. Dawson

Former name: Gymnogongrus leptophyllus J. Agardh Former name: Ahnfeltiopsis leptophylla (J. Agardh) P.C. Silva & T.C. DeCew Current name: Besa leptophylla (J. Agardh) M.S. Calderon & K.A. Miller

Silva, P.C. & DeCew, T.C. 1992. Ahnfeltiopsis, a new genus in the Phyllophoraceae (Gigartinales, Rhodophyceae). Phycologia 31: 576-580. Calderon, M.S., Miller, K.A., Seo, T.H. & Boo, S.M. 2016. Transfer of selected Ahnfeltiopsis (Phyllophoraceae, Rhodophyta) species to the genus Besa and description of Schottera koreana sp. nov. European Journal of Phycology 51(4): 1-13.

Former name: Gymnogongrus linearis (C. Agardh) J. Agardh Current name: Ahnfeltiopsis linearis (C. Agardh) P.C. Silva & T.C. DeCew

Silva, P.C. & DeCew, T.C. 1992. Ahnfeltiopsis, a new genus in the Phyllophoraceae (Gigartinales, Rhodophyceae). Phycologia 31: 576-580.

Gymnogongrus martinensis Setchell & N.L. Gardner Former name: Gymnogongrus platyphyllus N.L. Gardner Current name: Fredericqia chiton (M.A. Howe) C.A. Maggs, L. Le Gall, F. Mineur, J. Provan & G.W. Saunders

Silva, P.C. 1979. The benthic algal ﬂora of central San Francisco Bay. In: San Francisco Bay: the Urbanized Estuary. (Conomos, T.J., ed.), pp. 287- 345. San Francisco: Paciﬁc Division, American Association for the Advancement of Science. Maggs, C.A., Le Gall, L., Mineur, F., Provan, J. & Saunders, G.W. 2013. Fredericqia deveauniensis, gen. et sp. nov. (Phyllophoraceae, Rhodophyta), a new cryptogenic species. Cryptogamie, Algologie 34: 273-296.

Former name: Haematocelis rubens J. Agardh Current name: Schizymenia dubyi (Chauvin ex Duby) J. Agardh

Ardré, F. 1980. Observations sur le cycle de développement du Schizymenia dubyi (Rhodophycée, Gigartinale) en culture, et remarques sur certains genres de Némastomacées. Cryptogamie, Algologie 1: 111-140. DeCew, T.C., Silva, P.C. & West, J.A. 1992. Culture studies on the relationship between Schizymenia and Haematocelis (Gigartinales, Rhodophyceae) from the Paciﬁc coast of North America. Journal of Phycology 28: 558-566. DeCew, T.C., Silva, P.C. & West, J.A. 1992. Culture studies on the relationship between Schizymenia and Haematocelis (Gigartinales, Rhodophyceae) from the Paciﬁc coast of North America. Journal of Phycology 28: 558-566.

Former name: Haematocelis zonalis E.Y. Dawson & Neushul Current name: Schizymenia sp.

DeCew, T.C., Silva, P.C. & West, J.A. 1992. Culture studies on the relationship between Schizymenia and Haematocelis (Gigartinales, Rhodophyceae) from the Paciﬁc coast of North America. Journal of Phycology 28: 558-566.

Former name: Haliptylon gracile (Lamouroux) H.W. Johansen Current name: Jania rosea (Lamarck) Decaisne

Kim, J.H., Guiry, M.D., Oak, J.H., Choi, D.-S., Kang, S.-H., Chung, H. & Choi, H.-G. 2007. Phylogenetic relationships within the tribe Janieae (Corallinales, Rhodophyta) based on molecular and morphological data: a reappraisal of Jania. Journal of Phycology 43: 1310-1319. Halosaccion glandiforme (S.G. Gmelin) Ruprecht

Halymenia californica G.M. Smith & G.J. Hollenberg

Former name: Halymenia coccinea (Harvey) I.A. Abbott Current name: Weeksia coccinea (Harvey) S.C. Lindstrom

Lindstrom, S.C. 1986. Nomenclatural and taxonomic notes on species of the red algal genera Halymenia (Cryptonemiaceae) and Weeksia (Dumontiaceae). Taxon 35: 531-533.

Halymenia hollenbergii I.A. Abbott

Halymenia schizymenioides G.J. Hollenberg & I.A. Abbott

Helminthocladia australis Harvey

Helminthora stricta N.L. Gardner

*Former name: Haematocelis zonalis E.Y. Dawson & Neushul *Current name: Schizymenia paciﬁca (Kylin) Kylin

Herposiphonia hollenbergii E.Y. Dawson

Ding, L.P., Tan, H.Q., Zhang, Q.L., Zheng, L.Z. & Huang, B.X. 2016. Morphological study of the genus Herposiphonia (Rhodophyta, Rhodomelaceae) on the coast of eastern Guangdong, China, with a description of H. pinnata sp. nov. Chinese Journal of Oceanology and Limnology 34: 271-282.

Herposiphonia littoralis G.J. Hollenberg

Former name: Herposiphonia plumula (J. Agardh) G.J. Hollenberg Current name: Herposiphonia plumula (J. Agardh) Falkenberg

*Herposiphonia plumula var. parva (Hollenberg) Hollenberg

Hollenberg, G.J. 1970. Phycological notes. IV. Including new marine algae and new records for California. Phycologia 9: 61-72. Former name: Herposiphonia tenella f. secunda (C. Agardh) G.J. Hollenberg Current name: Herposiphonia secunda (C. Agardh) Ambronn

Silva, P.C., Basson, P.W. & Moe, R.L. 1996. Catalogue of the benthic marine algae of the Indian Ocean. University of California Publications in Botany 79: 1-1259.

Herposiphonia verticillata (Harvey) Kylin

Former name: Heteroderma nicholsii Setchell & Mason Current name: Pneophyllum nicholsii (Setchell & Mason) P.C. Silva & P.W. Gabrielson

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181. Chamberlain, Y.M. 1983. Studies in the Corallinaceae with special reference to Fosliella and Pneophyllum in the British Isles. Bulletin of the British Museum (Natural History) Botany 11: 291-463.

Heterosiphonia erecta N.L. Gardner

Former name: Heterosiphonia japonica Yendo sensu Abbott & Hollenberg 1976 Current name: Heterosiphonia densiuscula Kylin

Kylin, H. 1925. The marine red algae in the vicinity of the Biological Station at Friday Harbor, Wash. Acta Universitatis Lundensis 21(9): 1-87. West, J.A. 1970. The conspeciﬁcity of Heterosiphonia asymmetria and H. densiuscula and their life histories in culture. Madroño 20: 313-319. Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181.

Hildenbrandia dawsonii (Ardre) G.J. Hollenberg

Hildenbrandia occidentalis Setchell

Former name: Hildenbrandia prototypus Nardo Current name: Hildenbrandia rubra (Sommerfelt) Meneghini

Meneghini, G. 1841. Memoria diretta a mostrare i rapporti di organizzazione fra le Alghe propriamente dette o Ficee, e le Alghe terrestri o Licheni, pp. 417--431. In: Atti della Terza Riunione degli Scienziati Italiani ... Firenze ... 1841. Firenze. Denizot, M. 1968. Les Algues Floridées encroutantes (à l'exclusion des Corallinacées). Paris: published by author. Pp. 310, 227 ﬁgs. Silva, P.C., Basson, P.W. & Moe, R.L. 1996. Catalogue of the benthic marine algae of the Indian Ocean. University of California Publications in Botany 79: 1-1259.

Hollenbergia nigricans (N.L. Gardner) E.M. Wollaston

Hollenbergia subulata (Harvey) E.M. Wollaston

Former name: Holmesia californica (E.Y. Dawson) E.Y. Dawson Current name: Loranthophycus californicus E.Y. Dawson

Dawson, E.Y. 1944. A new parasitic red alga from southern California. Bulletin of the Torrey Botanical Club 71: 655-657. Dawson, E.Y. 1945. Notes on Paciﬁc coast marine algae. III. Madroño 8: 93-97.

Former name: Hydrolithon decipiens (Foslie) W.H. Adey Current name: Chamberlainium decipiens (Foslie) Caragnano, Foetisch, Maneveldt & Payri

Caragnano, A., Foetisch, A., Maneveldt, G.W., Millet, L., Liu, L.C., Lin, S.M., Rodondi, G. & Payri, C.E. 2018. Revision of Corallinaceae (Corallinales, Rhodophyta): recognizing Dawsoniolithon gen. nov., Parvicellularium gen. nov. and Chamberlainoideae subfam. nov. containing Chamberlainium gen. nov. and Pneophyllum. Journal of Phycology 54: 391- 409. Chamberlain, Y.M. 1993. Observations on the crustose coralline red alga Spongites yendoi (Foslie) comb. nov. in South Africa and its relationship to S. decipiens (Foslie) comb. nov. and Lithophyllum natalense Foslie. Phycologia 32: 100-115. Steneck, R.S. & Paine, R.T. 1986. Ecological and taxonomic studies of shallow-water encrusting Corallinaceae (Rhodophyta) of the boreal northeastern Paciﬁc. Phycologia 25: 221-240.

Hymenena cuneifolia M.S. Doty

Hymenena ﬂabelligera (J. Agardh) Kylin

Former name: Hymenena kylinii N.L. Gardner Current name: Hymenena ﬂabelligera (J. Agardh) Kylin Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181.

Hymenena multiloba (J. Agardh) Kylin

Hymenena setchellii N.L. Gardner

Former name: Hymenena smithii Kylin Current name: Hymenena setchellii N.L. Gardner

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181.

Hypnea johnstonii Setchell & N.L. Gardner

Hypnea valentiae (Turner) Montagne

Hypnea valentiae var. gardneri G.J. Hollenberg

Hypnea variabilis Okamura

Former name: Iridaea cordata var. cordata (Turner) Bory sensu Abbott & Hollenberg 1976 Current name: Mazzaella splendens (Setchell & N.L. Gardner) S. Fredericq

Hommersand, M.H., Fredericq, S. & Freshwater, D.W. 1994. Phylogenetic systematics and biogeography of the Gigartinaceae (Gigartinales, Rhodophyta) based on sequence analysis of rbcL. Botanica Marina 37: 193- 203.

Former name: Iridaea cordata var. splendens (Setchell & N.L. Gardner) I.A. Abbott Current name: Mazzaella splendens (Setchell & N.L. Gardner) S. Fredericq

Former name: Iridaea cornucopiae Postels & Ruprecht sensu Abbott & Hollenberg 1976 Current name: Mazzaella parksii (Setchell & N.L. Gardner) J.R. Hughey, P.C. Silva & M.H. Hommersand

Former name: Iridaea ﬂaccida (Setchell & N.L. Gardner) P.C. Silva Current name: Mazzaella ﬂaccida (Setchell & N.L. Gardner) S. Fredericq

Hommersand, M.H., Guiry, M.D., Fredericq, S. & Leister, G.L. 1993. New perspectives in the taxonomy of the Gigartinaceae (Gigartinales, Rhodophyta). In Proceedings of the International Seaweed Symposium, pp. 105-120. Saunders, G.W. & Millar, K.R. 2014. A DNA barcode survey of the red algal genus Mazzaella in British Columbia reveals overlooked diversity and newdistributional records: descriptions of M. dewreedei sp. nov. and M. macrocarpa sp. nov. Botany 92: 223-231.

Former name: Iridaea heterocarpa Postels & Ruprecht sensu Abbott & Hollenberg 1976 Current name: Mazzaella oregona (M.S. Doty) Hughey, P.C. Silva & M.H. Hommersand

Hughey, J.R., Silva, P.C. & Hommersand, M.H. 2001. Solving taxonomic and nomenclatural problems in Paciﬁc Gigartinaceae (Rhodophyta) using DNA from type material. Journal of Phycology 37: 1091-1109. Saunders, G.W. & Millar, K.R. 2014. A DNA barcode survey of the red algal genus Mazzaella in British Columbia reveals overlooked diversity and newdistributional records: descriptions of M. dewreedei sp. nov. and M. macrocarpa sp. nov. Botany 92: 223-231.

Former name: Iridaea lineare (Setchell & N.L. Gardner) Kylin Current name: Mazzaella linearis (Setchell & N.L. Gardner) S. Fredericq

Former name: Iridaea punicea Postels & Ruprecht sensu Abbott & Hollenberg 1976 Current name: Mazzaella sanguinea (Setchell & N.L. Gardner) M.H. Hommersand

Former name: Iridaea sanguinea (Setchell & N.L. Gardner) G.J. Hollenberg & I.A. Abbott Current name: Mazzaella sanguinea (Setchell & N.L. Gardner) M.H. Hommersand

Janczewskia gardneri Setchell & Guernsey

Janczewskia lappacea Setchell

Janczewskia moriformis Setchell

Janczewskia solmsii Setchell & Guernsey

Jania adhaerens Lamouroux

Jania crassa Lamouroux

Jania tenella (Kützing) Grunow

Former name: Jantinella verrucaeformis (Setchell & McFadden) Kylin Current name: Jantinella verruciformis (Setchell & McFadden) Kylin

Kallymenia norrisii G.J. Hollenberg & I.A. Abbott

Former name: Kallymenia oblongifructa Setchell Current name: Kallymeniopsis oblongifructa (Setchell) G.I. Hansen

Kallymenia paciﬁca Kylin

Former name: Kylinia rosulata Rosenvinge Current name: Acrochaetium rosulatum (Rosenvinge) G.F. Papenfuss Papenfuss, G.F. 1945. Review of the Acrochaetium-Rhodochorton complex of the red algae. University of California Publications in Botany 18: 229- 334. Nielsen, R., Kristiansen, A., Mathiesen, L. & Mathiesen, H. 1995. Distributional index of the benthic marine macroalgae of the Baltic Sea area. Acta Botanica Fennica 155: 1-70.

Former name: Laurencia blinksii G.J. Hollenberg & I.A. Abbott Current name: Osmundea blinksii (G.J. Hollenberg & I.A. Abbott) K.W. Nam

Nam, K.W., Maggs, C.A. & Garbary, D.J. 1994. Resurrection of the genus Osmundea with an emendation of the generic delineation of Laurencia (Ceramiales, Rhodophyta). Phycologia 33: 384-395.

Former name: Laurencia crispa G.J. Hollenberg Current name: Osmundea crispa (G.J. Hollenberg) K.W. Nam

Nam, K.W., Maggs, C.A. & Garbary, D.J. 1994. Resurrection of the genus Osmundea with an emendation of the generic delineation of Laurencia (Ceramiales, Rhodophyta). Phycologia 33: 384-395.

Laurencia decidua E.Y. Dawson

Laurencia gardneri G.J. Hollenberg

Laurencia lajolla E.Y. Dawson

Laurencia masonii Setchell & N.L. Gardner

Laurencia paciﬁca Kylin

Former name: Laurencia sinicola Setchell & N.L. Gardner Current name: Osmundea sinicola (Setchell & N.L. Gardner) K.W. Nam

Nam, K.W., Maggs, C.A. & Garbary, D.J. 1994. Resurrection of the genus Osmundea with an emendation of the generic delineation of Laurencia (Ceramiales, Rhodophyta). Phycologia 33: 384-395.

Former name: Laurencia snyderiae E.Y. Dawson Current name: Laurencia snyderae E.Y. Dawson

Former name: Laurencia spectabilis var. spectabilis Postels & Ruprecht Current name: Osmundea spectabilis var. spectabilis (Postels & Ruprecht) K.W. Nam Nam, K.W., Maggs, C.A. & Garbary, D.J. 1994. Resurrection of the genus Osmundea with an emendation of the generic delineation of Laurencia (Ceramiales, Rhodophyta). Phycologia 33: 384-395.

Former name: Laurencia spectabilis var. diegoensis (E.Y. Dawson) E.Y. Dawson Current name: Osmundea spectabilis var. diegoensis (E.Y. Dawson) K.W. Nam

Nam, K.W., Maggs, C.A. & Garbary, D.J. 1994. Resurrection of the genus Osmundea with an emendation of the generic delineation of Laurencia (Ceramiales, Rhodophyta). Phycologia 33: 384-395.

Former name: Laurencia splendens G.J. Hollenberg Current name: Osmundea splendens (G.J. Hollenberg) K.W. Nam

Nam, K.W., Maggs, C.A. & Garbary, D.J. 1994. Resurrection of the genus Osmundea with an emendation of the generic delineation of Laurencia (Ceramiales, Rhodophyta). Phycologia 33: 384-395.

Laurencia subdisticha E.Y. Dawson, Neushul & Wildman

Laurencia subopposita (J. Agardh) Setchell

Former name: Lejolisea pusilla E.Y. Dawson & Neushul Current name: Lejolisia pusilla E.Y. Dawson & Neushul

Leptocladia binghamiae J. Agardh

Leptofauchea paciﬁca E.Y. Dawson

Dalen, J.L. & Saunders, G.W. 2007. A review of the red algal genus Leptofauchea (Faucheaceae, Rhodymeniales) including a description of L. chiloensis sp. nov. Phycologia 46: 198-213.

*Leptophytum lamellicola A. Athanasiadis & W.H. Adey

Athanasiadis, A. & Adey, W.H. 2006. The genus Leptophytum (Melobesioideae, Corallinales, Rhodophyta) on the Paciﬁc coast of North America. Phycologia 45: 71-115.

Levringiella gardneri (Setchell) Kylin

Liagora californica Zeh

Lithophyllum grumosum (Foslie) Foslie Lithophyllum imitans Foslie

Former name: Lithophyllum lichenare Mason Former name: Pseudolithophyllum muricatum (Foslie) R.S. Steneck & R.T. Paine Current name: Crusticorallina muricata (Foslie) P.W.Gabrielson, Martone, K.R.Hind, & C.P.Jensen

Steneck, R.S. & Paine, R.T. 1986. Ecological and taxonomic studies of shallow-water encrusting Corallinaceae (Rhodophyta) of the boreal northeastern Paciﬁc. Phycologia 25: 221-240. Hind, K.R., P.W. Gabrielson, C.P. Jensen, and P.T. Martone. 2016. Crusticorallina gen. nov., a nongeniculate genus in the subfamily Corallinoideae (Corallinales, Rhodophyta)

Lithophyllum proboscideum (Foslie) Foslie

Former name: Lithothamnium Current name: Lithothamnion

Former name: Lithothamnium aculeiferum Mason Current name: Mesophyllum crassiusculum (Foslie) P.A. Lebednik

Athanasiadis, A., Lebednik, P.A. & Adey, W.H. 2004. The genus Mesophyllum (Melobesioideae, Corallinales, Rhodophyta) on the northern Paciﬁc coast of North America. Phycologia 43: 126-165.

Former name: Lithothamnium australe (Foslie) Foslie Current name: Lithothamnion australe (Foslie) Foslie

Former name: Lithothamnium californicum Foslie Current name: Lithothamnion californicum Foslie

Former name: Lithothamnium crassiusculum (Foslie) Mason Current name: Mesophyllum crassiusculum (Foslie) P.A. Lebednik

Athanasiadis, A., Lebednik, P.A. & Adey, W.H. 2004. The genus Mesophyllum (Melobesioideae, Corallinales, Rhodophyta) on the northern Paciﬁc coast of North America. Phycologia 43: 126-165.

Former name: Lithothamnium giganteum Mason Current name: Lithothamnion giganteum Mason

Former name: Lithothamnium microsporum (Foslie) Foslie Current name: Leptophytum microsporum (Foslie) A. Athanasiadis & W.H. Adey

Athanasiadis, A. & Adey, W.H. 2006. The genus Leptophytum (Melobesioideae, Corallinales, Rhodophyta) on the Paciﬁc coast of North America. Phycologia 45: 71-115.

Former name: Lithothamnium montereyicum Foslie Current name: Lithothamnion montereyicum Foslie

Former name: Lithothamnium paciﬁcum (Foslie) Foslie Current name: Lithothamnion phymatodeum Foslie

Steneck, R.S. & Paine, R.T. 1986. Ecological and taxonomic studies of shallow-water encrusting Corallinaceae (Rhodophyta) of the boreal northeastern Paciﬁc. Phycologia 25: 221-240.

Former name: Lithothamnium phymatodeum Foslie Current name: Lithothamnion phymatodeum Foslie

Former name: Lithothamnium volcanum E.Y. Dawson Current name: Lithothamnion volcanum E.Y. Dawson

Lithothrix aspergillum J.E. Gray

Lomentaria caseae E.Y. Dawson

Lomentaria hakodatensis Yendo

Maripelta rotata (E.Y. Dawson) E.Y. Dawson

Wilkes, R.J., McIvor, L. & Guiry, M.D. 2005. The taxonomic position of Maripelta rotata (Rhodymeniaceae, Rhodophyta). Cryptogamie, Algologie 26: 67-75.

*Mastocarpus alaskensis S.C. Lindstrom, J.R. Hughey & P.T. Martone

Lindstrom, S.C., Hughey, J.R. & Martone, P.T. 2011. New, resurrected and redeﬁned species of Mastocarpus (Phyllophoraceae, Rhodophyta) from the northeast Paciﬁc. Phycologia 50: 661-683.

*Mastocarpus californianus S.C. Lindstrom, J.R. Hughey & P.T. Martone

Lindstrom, S.C., Hughey, J.R. & Martone, P.T. 2011. New, resurrected and redeﬁned species of Mastocarpus (Phyllophoraceae, Rhodophyta) from the northeast Paciﬁc. Phycologia 50: 661-683.

*Mastocarpus cristatus (Setchell) S.C. Lindstrom, J.R. Hughey & P.T. Martone

Lindstrom, S.C., Hughey, J.R. & Martone, P.T. 2011. New, resurrected and redeﬁned species of Mastocarpus (Phyllophoraceae, Rhodophyta) from the northeast Paciﬁc. Phycologia 50: 661-683.

*Mastocarpus intermedius (Setchell & N.L. Gardner) S.C. Lindstrom, J.R. Hughey & P.T. Martone

Lindstrom, S.C., Hughey, J.R. & Martone, P.T. 2011. New, resurrected and redeﬁned species of Mastocarpus (Phyllophoraceae, Rhodophyta) from the northeast Paciﬁc. Phycologia 50: 661-683.

*Mastocarpus jardinii (J. Agardh) J.A. West

Guiry, M.D., West, J.A., Kim, D.H. & Masuda, M. 1984. Reinstatement of the genus Mastocarpus Kützing (Rhodophyta). Taxon 33: 53-63.

*Mastocarpus latissimus (Harvey) S.C. Lindstrom, J.R. Hughey & P.T. Martone

Lindstrom, S.C., Hughey, J.R. & Martone, P.T. 2011. New, resurrected and redeﬁned species of Mastocarpus (Phyllophoraceae, Rhodophyta) from the northeast Paciﬁc. Phycologia 50: 661-683.

*Mastocarpus pachenicus L. Le Gall & G.W. Saunders

Le Gall, L. & Saunders, G.W. 2010. DNA barcoding is a powerful tool to uncover algal diversity: a case study of the Phyllophoraceae (Gigartinales, Rhodophyta) in the Canadian flora. Journal of Phycology 46: 374-389. Lindstrom, S.C., Hughey, J.R. & Martone, P.T. 2011. New, resurrected and redefined species of Mastocarpus (Phyllophoraceae, Rhodophyta) from the northeast Pacific. Phycologia 50: 661-683.

*Mastocarpus rigidus S.C. Lindstrom, J.R. Hughey & P.T. Martone

Lindstrom, S.C., Hughey, J.R. & Martone, P.T. 2011. New, resurrected and redeﬁned species of Mastocarpus (Phyllophoraceae, Rhodophyta) from the northeast Paciﬁc. Phycologia 50: 661-683.

*Mastocarpus vancouveriensis S.C. Lindstrom, J.R. Hughey & P.T. Martone

Lindstrom, S.C., Hughey, J.R. & Martone, P.T. 2011. New, resurrected and redeﬁned species of Mastocarpus (Phyllophoraceae, Rhodophyta) from the northeast Paciﬁc. Phycologia 50: 661-683.

*Mazzaella coriacea (E.Y. Dawson) J.R. Hughey

*Mazzaella dewreedei G.W. Saunders & K.R. Millar

Saunders, G.W. & Millar, K.R. 2014. A DNA barcode survey of the red algal genus Mazzaella in British Columbia reveals overlooked diversity and newdistributional records: descriptions of M. dewreedei sp. nov. and M. macrocarpa sp. nov. Botany 92: 223-231.

*Former name: Neosiphonia harveyi (Bailey) M.-S. Kim, H.-G. Choi, M. Guiry, & G.W. Saunders *Current name: Melanothamnus harveyi (Bailey) P. Díaz-Tapia & C. Maggs

Díaz-Tapia, P., McIvor, L., Freshwater, D.W., Verbruggen, H., Wynne, M.J. & Maggs, C.A. 2017. The genera Melanothamnus Bornet & Falkenberg and Vertebrata S.F. Gray constitute well-deﬁned clades of the red algal tribe Polysiphonieae (Rhodomelaceae, Ceramiales). European Journal of Phycology 52: 1-20. Choi, H.-G., Kim, M.S., Guiry, M.D. & Saunders, G.W. 2001. Phylogenetic relationships of Polysiphonia (Rhodomelaceae, Rhodophyta) and its relatives based on anatomical and nuclear small-subunit rDNA sequence data. Canadian Journal of Botany 79: 1465-1476. McIvor, L., Maggs, C.A., Provan, J. & Stanhope, M.J. 2001. rbcL sequences reveal multiple cryptic introductions of the Japanese red alga Polysiphonia harveyi. Molecular Ecology 10: 911-919.

Melobesia marginata Setchell & Foslie

Melobesia mediocris (Foslie) Setchell & Mason

Former name: Membranella nitens G.J. Hollenberg & I.A. Abbott Current name: Smithora naiadum (C.L. Anderson) G.J. Hollenberg

West, J.A. & Zuccarello, G.C. 2009. Taxonomic deﬂation: molecular evidence places Membranella nitens in taxonomic synonymy with Smithora naiadum (Erythropeltidales, Compsopogonophyceae, Rhodophyta). Phycologia 48: 543-546.

Former name: Membranoptera dimorpha N.L. Gardner Current name: Membranoptera platyphylla (Setchell & N.L. Gardner) Kylin

Wynne, M.J. & Saunders, G.W. 2012. Taxonomic assessment of North American species of the genera Cumathamnion, Delesseria, Membranoptera and Pantoneura (Delesseriaceae, Rhodophyta) using molecular data. Algae 27: 155-173. Hughey, J.R., Hommersand, M.H., Gabrielson, P.W., Miller, K.A. & Fuller, T. 2017. Analysis of the complete plastomes of three species of Membranoptera (Ceramiales, Rhodophyta) from Paciﬁc North America. Journal of Phycology 53: 32-43.

Former name: Membranoptera multiramosa N.L. Gardner Current name: Membranoptera platyphylla (Setchell & N.L. Gardner) Kylin

Hawkes, M.W., Tanner, C.E. & Lebednik, P.A. 1978. The benthic marine algae of northern British Columbia. Syesis 11: 81-115. Hughey, J.R., Hommersand, M.H., Gabrielson, P.W., Miller, K.A. & Fuller, T. 2017. Analysis of the complete plastomes of three species of Membranoptera (Ceramiales, Rhodophyta) from Paciﬁc North America. Journal of Phycology 53: 32-43.

Membranoptera weeksiae Setchell & N.L. Gardner

*Membranoptera tenuis Kylin

Hughey, J.R., Hommersand, M.H., Gabrielson, P.W., Miller, K.A. & Fuller, T. 2017. Analysis of the complete plastomes of three species of Membranoptera (Ceramiales, Rhodophyta) from Paciﬁc North America. Journal of Phycology 53: 32-43.

Mesophyllum conchatum (Setchell & Foslie) W.H. Adey

Mesophyllum lamellatum (Setchell & Foslie) W.H. Adey

Microcladia borealis Ruprecht

Former name: Microcladia californica Farlow Current name: Campylaephora californica (Farlow) T.O. Cho

Cho, T.O., Hommersand, M.H., Won, B.Y. & Fredericq, S. 2008. Generic boundaries and phylogeny of Campylaephora (Ceramiaceae, Rhodophyta), including Campylaephora californica (Farlow) comb. nov. Phycologia 47: 321-333.

Microcladia coulteri Harvey

*Minium parvum Moe

Moe, R.L. 1979. Minium parvum gen. et sp. nov., a crustose member of the Rhodymeniales (Rhodophyta). Phycologia 18: 38-46.

Former name: Murrayellopsis dawsonii Post Current name: Veleroa subulata E.Y. Dawson

Stewart, J.G. 1989. Notes on marine algae of San Diego County including merger of Murrayellopsis with Veleroa. Bulletin of the Southern California Academy of Sciences 88: 103-116.

Myriogramme caespitosa E.Y. Dawson

Myriogramme repens G.J. Hollenberg

Myriogramme spectabilis (Eaton) Kylin

Myriogramme variegata Yamada

*Neevea repens Batters

Former name: Nemalion helminthoides (Velley) Batters Current name: Nemalion elminthoides (Velley) Batters

Former name: Neoagardhiella baileyi (Kützing) M.J. Wynne & W.R. Taylor Current name: Sarcodiotheca gaudichaudii (Montagne) P.W. Gabrielson

Gabrielson, P.W. 1982. Morphological studies of members of the tribe Agardhielleae (Solieriaceae, Rhodophyta) II. Sarcodiotheca gaudichaudii (Montagne) comb. nov. Phycologia 21: 86-96. Neogoniolithon setchellii (Foslie) W.H. Adey

Former name: Neopolyporolithon reclinatum (Foslie) W.H. Adey & H.W. Johansen Current name: probably not in California

Former name: Neoptilota californica (Harvey) Kylin Current name: Ptilota densa C. Agardh

Bruce, M.R. & Saunders, G.W. 2016. A molecular-assisted investigation of diversity, biogeography and phylogenetic relationships for species of Neoptilota and Ptilota (Wrangeliaceae, Rhodophyta) reported along Canadian coasts. Phycologia 56: 36-53.

Former name: Neoptilota densa (C. Agardh) Kylin Current name: Ptilota densa C. Agardh

Former name: Neoptilota hypnoides (Harvey) Kylin Current name: Ptilota hypnoides Harvey

Nienburgia andersoniana (J. Agardh) Kylin

Nitophyllum cincinnatum I.A. Abbott

Nitophyllum hollenbergii (Kylin) I.A. Abbott

Nitophyllum northii G.J. Hollenberg & I.A. Abbott Odonthalia ﬂoccosa (Esper) Falkenberg

Former name: Odonthalia oregona M.S. Doty Current name: Neorhodomela oregona (M.S. Doty) M. Masuda

Masuda, M. 1982. A systematic study of the tribe Rhodomeleae (Rhodomelaceae, Rhodophyta). Journal of the Faculty of Science, Hokkaido University, Series V (Botany) 12: 209-400.

Odonthalia washingtoniensis Kylin

Ophidocladus simpliciusculus (P.L. Crouan & H.M. Crouan) Falkenberg

Opuntiella californica (Farlow) Kylin

Ozophora clevelandii (Farlow) I.A. Abbott

Ozophora latifolia I.A. Abbott

*Pachymeniopsis lanceolata (Okamura) Yamada ex S. Kawabata

Garguilo, G.M., Morabito, M. & Manghisi, A. 2013. A re-assessment of reproductive anatomy and post-fertilization development in the systematics of Grateloupia (Halymeniales, Rhodophyta). Cryptogamie, Algologie 34: 3- 35. Hughey, J.R. & Miller, K.A. 2009. Noteworthy collection. Madroño 56: 64. Hughey, J.R., Miller, K.A. & Lyman, A. 2009. Noteworthy collection. Madroño 56: 293-295. Miller, K.A., Aguilar-Rosas, L.E. & Pedroche, F.F. 2011. A review of non- native seaweeds from California, USA and Baja California, Mexico. Hidrobiologica 21:240-254.

*Palmaria hecatensis M.J. Hawkes

Lindstrom, S.C., Olsen, J.L. & Stam, W.T. 1996. Recent radiation of the Palmariaceae (Rhodophyta). Journal of Phycology 32: 457-468.

Former name: Petrocelis franciscana Setchell & N.L. Gardner Current name: Mastocarpus papillatus (C. Agardh) Kützing

West, J.A. 1972. The life history of Petrocelis franciscana. British Phycological Journal 7: 299-308.

Former name: Petrocelis haematis G.J. Hollenberg Current name: Erythrodermis haematis (G.J. Hollenberg) Denizot

Denizot, M. 1968. Les Algues Floridées encroutantes (à l'exclusion des Corallinacées). Paris: published by author. Pp. 310, 227 ﬁgs.

Petroglossum paciﬁcum G.J. Hollenberg

Petroglossum parvum G.J. Hollenberg

Former name: Peyssonellia Current name: Peyssonnelia

*Peyssonnelia dubyi P.L. Crouan & H.M. Crouan

Dawson, E.Y. 1961. A guide to the literature and distribution of Paciﬁc benthic algae from Alaska to the Galapagos Islands. Paciﬁc Science 15: 370-461.

Former name: Peyssonellia hairii G.J. Hollenberg & I.A. Abbott Current name: Peyssonnelia hairii G.J. Hollenberg & I.A. Abbott

Former name: Peyssonellia meridionalis G.J. Hollenberg & I.A. Abbott Current name: Peyssonnelia meridionalis G.J. Hollenberg & I.A. Abbott

*Peyssonnelia paciﬁca Kylin

Former name: Peyssonellia profunda G.J. Hollenberg & I.A. Abbott Current name: Peyssonnelia profunda G.J. Hollenberg & I.A. Abbott

Former name: Peyssonellia rubra var. orientalis A. Weber-van Bosse Current name: Peyssonnelia orientalis (A. Weber-van Bosse) M. Cormaci & G. Furnari

Cormaci, M. & Furnari, G. 1987. Nomenclatural notes on some Mediterranean algae. Taxon 36: 755-758.

Former name: Phycodrys isabelliae R.E. Norris & M.J. Wynne Current name: Phycodrys isabellae R.E. Norris & M.J. Wynne *Phycodrys ovifolia (Kützing) M.J. Wynne

Wynne, M.J. 1989. Taxonomic observations on some marine algae in Herbarium Hamburgense. Nova Hedwigia 48: 419-430. Dawson, E.Y., Acleto, O.C. & Foldvik, N. 1964. The seaweeds of Peru. Beihefte Nova Hedwigia 13: 1-111. Stewart, J.G. 1989. Notes on marine algae of San Diego County including merger of Murrayellopsis with Veleroa. Bulletin of the Southern California Academy of Sciences 88: 103-116.

Phycodrys profunda E.Y. Dawson

Phycodrys setchellii Skottsberg

Pikea californica Harvey

Maggs, C.A. & Guiry, M.D. 1987. An Atlantic population of Pikea californica (Dumontiaceae, Rhodophyta). Journal of Phycology 23: 170- 176.

Former name: Pikea robusta I.A. Abbott Current name: Pikea pinnata Setchell

Maggs, C.A. & Ward, B.A. 1996. The genus Pikea (Dumontiaceae, Rhodophyta) in England and the north Paciﬁc: comparative morphological, life history and molecular studies. Journal of Phycology 32: 176-193. Boo, G.H., Hwang, I.K., Ha, D.S., Miller, K.A., Kogame, K., Cho, G.Y., Kim, J.Y. & Boo, S.M. 2016. Phylogeny and distribution of the genus Pikea (Gigartina, Rhodophyta) with special reference to P. yoshizakii from Korea. Phycologia 55(1): 3-11.

Platysiphonia clevelandii (Farlow) G.F. Papenfuss

Platysiphonia decumbens M.J. Wynne

Platysiphonia parva P.C. Silva & Cleary

Former name: Platythamnion heteromorphum (J. Agardh) J. Agardh Current name: Pterothamnion heteromorphum (J. Agardh) ) A. Athanasiadis & G.T. Kraft

Athanasiadis, A. & Kraft, G.T. 1994. Description of Pterothamnion squarrulosum (Harvey) comb. nov. from southeastern Australia and southern New Zealand, with a taxonomic re-assessment of the genera Pterothamnion, Platythamnion and Glandothamnus (Ceramiaceae, Rhodophyta). European Journal of Phycology 29: 119-133.

Former name: Platythamnion pectinatum Kylin Current name: Pterothamnion pectinatum (Kylin) A. Athanasiadis & G.T. Kraft

Former name: Platythamnion recurvatum E.M. Wollaston Current name: Pterothamnion recurvatum (E.M. Wollaston) A. Athanasiadis & G.T. Kraft

Former name: Platythamnion villosum Kylin Current name: Pterothamnion villosum (Kylin) A. Athanasiadis & G.T. Kraft

Pleonosporium squarrosum Kylin

Pleonosporium squarrulosum (Harvey) I.A. Abbott

Pleonosporium vancouverianum (J. Agardh) J. Agardh

Former name: Plocamiocolax pulvinata Setchell Current name: Plocamiocolax pulvinatus Setchell

Former name: Plocamium cartilagineum (Linnaeus) P.S. Dixon sensu Abbott & Hollenberg 1976 Current name: Plocamium paciﬁcum Kylin

Saunders, G.W. & Lehmkuhl, V. 2005. Molecular divergence and morphological diversity among four cryptic species of Plocamium (Plocamiales, Florideophyceae) in northern Europe. European Journal of Phycology 40: 293-312.

Plocamium oregonum M.S. Doty

Plocamium violaceum Farlow

Former name: Pogonophorella californica (J. Agardh) P.C. Silva Current name: Dasya binghamiae A.J.K. Millar

Millar, A.J.K. 1996. Dasya roslyniae sp. nov. (Dasyaceae, Rhodophyta), with a discussion on generic distinctions among Dasya, Eupogodon, Rhodoptilum, and Pogonophorella. Journal of Phycology 32: 145-157.

Pollexfenia anacapensis E.Y. Dawson & Neushul

Polyneura latissima (Harvey) Kylin

Polyneurella hancockii E.Y. Dawson

*Polyneuropsis stolonifera M.J. Wynne, McBride & J.A. West

Wynne, M.J., McBride, D.L. & West, J.A. 1973. Polyneuropsis stolonifera gen. et sp. nov. (Delesseriaceae, Rhodophyta) from the Paciﬁc coast of North America. Syesis 6: 243-253.

Former name: Polysiphonia acuminata N.L. Gardner Former name: Neosiphonia harveyi (J.W. Bailey) M.-S. Kim, H.-G. Choi, M. Guiry, & G.W. Saunders Current name: Melanothamnus harveyi (Bailey) Díaz-Tapia & Maggs

McIvor, L., Maggs, C.A., Provan, J. & Stanhope, M.J. 2001. rbcL sequences reveal multiple cryptic introductions of the Japanese red alga Polysiphonia harveyi. Molecular Ecology 10: 911-919. Díaz-Tapia, P., McIvor, L., Freshwater, D.W., Verbruggen, H., Wynne, M.J. & Maggs, C.A. 2017. The genera Melanothamnus Bornet & Falkenberg and Vertebrata S.F. Gray constitute well-deﬁned clades of the red algal tribe Polysiphonieae (Rhodomelaceae, Ceramiales). European Journal of Phycology 52: 1-20. Former name: Polysiphonia bajacali G.J. Hollenberg Current name: Melanothamnus bajacali (Hollenberg) Díaz-Tapia & Maggs

Former name: Polysiphonia brodiaei (Dillwyn) Sprengel Current name: Polysiphonia brodiei (Dillwyn) Sprengel

*Melanothamnus collabens (C.Agardh) Díaz-Tapia & Maggs

Former name: Polysiphonia johnstonii var. concinna (G.J. Hollenberg) G.J. Hollenberg Former name: Neosiphonia concinna (Hollenberg) J.N.Norris Current name: Melanothamnus concinnus (Hollenberg) Díaz-Tapia & Maggs

Norris, J.N. Marine Algae of the Northern Gulf of California, II: Rhodophyta. Smithsonian Contributions to Botany 96. pp. [i]-xvi, [1]-555. Díaz-Tapia, P., McIvor, L., Freshwater, D.W., Verbruggen, H., Wynne, M.J. & Maggs, C.A. 2017. The genera Melanothamnus Bornet & Falkenberg and Vertebrata S.F. Gray constitute well-deﬁned clades of the red algal tribe Polysiphonieae (Rhodomelaceae, Ceramiales). European Journal of Phycology 52: 1-20.

Polysiphonia confusa G.J. Hollenberg

*Carradoriella denudata (Dillwyn) A.M. Savoie & G.W. Saunders Josselyn, M.N. & West, J.A. 1985. The distribution and temporal dynamics of the estuarine macroalgal community of San Francisco Bay. Hydrobiologia 129: 139-152. Savoie, A.M. & Saunders, G.W. 2018. A molecular assessment of species diversity and generic boundaries in the red algal tribes Polysiphonieae and Streblocladieae (Rhodomelaceae, Rhodophyta) in Canada. European Journal of Phycology 54(1): 1-25.

Polysiphonia decussata G.J. Hollenberg

Former name: Polysiphonia ﬂaccidissima G.J. Hollenberg Current name: Neosiphonia ﬂaccidissima (G.J. Hollenberg) M.-S. Kim & I.K. Lee

Kim, M.S. & Lee, I.K. 1999. Neosiphonia ﬂavimarina gen. et sp. nov. with a taxonomic reassessment of the genus Polysiphonia (Rhodomelaceae, Rhodophyta). Phycological Research 47: 271-281.

Polysiphonia hendryi N.L. Gardner

Polysiphonia hendryi var. compacta (G.J. Hollenberg) G.J. Hollenberg

Polysiphonia hendryi var. deliquescens (G.J. Hollenberg) G.J. Hollenberg

Polysiphonia hendryi var. gardneri (Kylin) G.J. Hollenberg

Polysiphonia indigena G.J. Hollenberg

Former name: Polysiphonia japonica var. savatieri (Hariot) Yoon Former name: Neosiphonia savatieri (Hariot) M.-S. Kim & I.K. Lee Current name: Melanothamnus savatieri (Hariot) Díaz-Tapia & Maggs

Kim, M.S. & Lee, I.K. 1999. Neosiphonia ﬂavimarina gen. et sp. nov. with a taxonomic reassessment of the genus Polysiphonia (Rhodomelaceae, Rhodophyta). Phycological Research 47: 271-281. Díaz-Tapia, P., McIvor, L., Freshwater, D.W., Verbruggen, H., Wynne, M.J. & Maggs, C.A. 2017. The genera Melanothamnus Bornet & Falkenberg and Vertebrata S.F. Gray constitute well-deﬁned clades of the red algal tribe Polysiphonieae (Rhodomelaceae, Ceramiales). European Journal of Phycology 52: 1-20.

Former name: Polysiphonia johnstonii Setchell & N.L. Gardner Current name: Neosiphonia johnstonii (Setchell & N.L. Gardner) J.N. Norris Norris, J.N. Marine Algae of the Northern Gulf of California, II: Rhodophyta. Smithsonian Contributions to Botany 96. pp. [i]-xvi, [1]-555.

Former name: Polysiphonia mollis J. Hooker & Harvey sensu Abbott & Hollenberg 1976 Former name: Neosiphonia eastwoodiae (Setchell & N.L. Gardner) J.N. Norris Current name: Melanothamnus eastwoodiae (Setchell & N.L. Gardner) Díaz-Tapia & Maggs

Polysiphonia nathanielii G.J. Hollenberg

Polysiphonia paciﬁca G.J. Hollenberg

Polysiphonia paciﬁca var. delicatula G.J. Hollenberg

Polysiphonia paciﬁca var. determinata G.J. Hollenberg

Polysiphonia paciﬁca var. distans G.J. Hollenberg

Polysiphonia paciﬁca var. disticha G.J. Hollenberg

Polysiphonia paciﬁca var. gracilis G.J. Hollenberg

Former name: Polysiphonia paniculata Montagne Former name: Neosiphonia paniculata (Montagne) J.N. Norris Current name: Polysiphonia paniculata Montagne

Huisman, J.M., Kim, B. & Kim, M.S. 2017. The phylogenetic position of Polysiphonia scopulorum (Rhodomelaceae, Rhodophyta) based on molecular analyses and morphological observations of specimens from the type locality in Western Australia. Phytotaxa 324(1): 51-62.

Former name: Polysiphonia simplex G.J. Hollenberg Former name: Neosiphonia simplex (G.J. Hollenberg) Y.-P. Lee Current name: Melanothamnus simplex (G.J. Hollenberg) Díaz-Tapia & Maggs

Lee, Y.-P. 2008. Marine algae of Jeju. pp. [i]-xvi, 1-477 [2], map. Seoul: Academy Publication. McIvor, L., Maggs, C.A., Provan, J. & Stanhope, M.J. 2001. rbcL sequences reveal multiple cryptic introductions of the Japanese red alga Polysiphonia harveyi. Molecular Ecology 10: 911-919. Díaz-Tapia, P., McIvor, L., Freshwater, D.W., Verbruggen, H., Wynne, M.J. & Maggs, C.A. 2017. The genera Melanothamnus Bornet & Falkenberg and Vertebrata S.F. Gray constitute well-deﬁned clades of the red algal tribe Polysiphonieae (Rhodomelaceae, Ceramiales). European Journal of Phycology 52: 1-20.

Former name: Porphyra abbottiae V. Krishnamurthy Current name: Pyropia abbottiae (V. Krishnamurthy) S.C. Lindstrom

Sutherland, J.E., Lindstrom, S.C., Nelson, W.A., Brodie, J., Lynch, M.D.J., Hwang, M.S., Choi, H.-G., Miyata, M., Kikuchi, N., Oliveira, M.C., Farr, T., Neefus, C.D., Mols-Mortensen, A., Milstein, D., Müller, K.M. 2011. A new look at an ancient order: generic revision of the Bangiales (Rhodophyta). Journal of Phycology 47: 1131-1151. Augyte, S. & Shaughnessy, F.J. 2014. A ﬂoristic analysis of the marine algae and seagrasses between Cape Mendocino, California and Cape Blanco, Oregon, USA. Botanica Marina 57(4): 251-263.

Former name: Porphyra gardneri (G.M. Smith & G.J. Hollenberg) M.J. Hawkes Current name: Pyropia gardneri (G.M. Smith & G.J. Hollenberg) S.C. Lindstrom

Sutherland, J.E., Lindstrom, S.C., Nelson, W.A., Brodie, J., Lynch, M.D.J., Hwang, M.S., Choi, H.-G., Miyata, M., Kikuchi, N., Oliveira, M.C., Farr, T., Neefus, C.D., Mols-Mortensen, A., Milstein, D., Müller, K.M. 2011. A new look at an ancient order: generic revision of the Bangiales (Rhodophyta). Journal of Phycology 47: 1131-1151. Former name: Porphyra hollenbergii E.Y. Dawson Current name: Pyropia hollenbergii (E.Y. Dawson) J.E. Sutherland, L.E. Aguilar-Rosas & R. Aguilar-Rosas

Former name: Porphyra lanceolata (Setchell & Hus) G.M. Smith Current name: Pyropia lanceolata (Setchell & Hus) S.C. Lindstrom

Former name: Porphyra miniata (C. Agardh) C. Agardh sensu Abbott & Hollenberg 1976 Current name: Wildemania amplissima (Kjellman) Foslie

Kucera, H. & Saunders, G.W. 2012. A survey of Bangiales (Rhodophyta) based on multiple molecular markers reveals cryptic diversity. Journal of Phycology 48: 869-882.

*Porphyra mumfordii S.C. Lindstrom & K.M. Cole

Lindstrom, S.C. & Fredericq, S. 2003. rbcL gene sequences reveal relationships among northeast Paciﬁc species of Porphyra (Bangiales, Rhodophyta) and a new species, P. aestivalis. Phycological Research 51: 211-224.

Former name: Porphyra nereocystis C.L. Anderson Current name: Pyropia nereocystis (C.L. Anderson) S.C. Lindstrom

Sutherland, J.E., Lindstrom, S.C., Nelson, W.A., Brodie, J., Lynch, M.D.J., Hwang, M.S., Choi, H.-G., Miyata, M., Kikuchi, N., Oliveira, M.C., Farr, T., Neefus, C.D., Mols-Mortensen, A., Milstein, D., Müller, K.M. 2011. A new look at an ancient order: generic revision of the Bangiales (Rhodophyta). Journal of Phycology 47: 1131-1151. Former name: Porphyra occidentalis Setchell & Hus Current name: Wildemania occidentalis (Setchell & Hus) S.C. Lindstrom

Former name: Porphyra perforata J. Agardh Current name: Pyropia perforata (J. Agardh) S.C. Lindstrom

Former name: Porphyra pulchra G.J. Hollenberg Current name: Pyropia pulchra (G.J. Hollenberg) S.C. Lindstrom & J.R. Hughey

Lindstrom, S.C. & Hughey, J.R. 2016. Pyropia smithii is Pyropia pulchra comb. nov. Madroño 63(3):281-282. 2016

*Porphyra purpurea (Roth) C. Agardh

Stiller, J.W. & Waaland, J.D. 1996. Porphyra rediviva sp. nov. (Rhodophyta): a new species from northeast Paciﬁc saltmarshes. Journal of Phycology 32: 323-332. Bray, T.L., Neefus, C.D. & Mathieson, A.C. 2007. A morphological and molecular investigation of Porphyra purpurea (Bangiales, Rhodophyta) complex in the Northwest Atlantic. Nova Hedwigia 84: 277-298. Sutherland, J.E., Lindstrom, S.C., Nelson, W.A., Brodie, J., Lynch, M.D.J., Hwang, M.S., Choi, H.-G., Miyata, M., Kikuchi, N., Oliveira, M.C., Farr, T., Neefus, C.D., Mols-Mortensen, A., Milstein, D., Müller, K.M. 2011. A new look at an ancient order: generic revision of the Bangiales (Rhodophyta). Journal of Phycology 47: 1131-1151.

Former name: Porphyra schizophylla G.J. Hollenberg Current name: Wildemania schizophylla (G.J. Hollenberg) S.C. Lindstrom

Former name: Porphyra smithii G.J. Hollenberg & I.A. Abbott Current name: Pyropia pulchra (G.J. Hollenberg) S.C. Lindstrom & J.R. Hughey

Lindstrom, S.C. & Hughey, J.R. 2016. Pyropia smithii is Pyropia pulchra comb. nov. Madroño 63(3):281-282. 2016

Former name: Porphyra thuretii E.Y. Dawson Current name: Pyropia thuretii (Setchell & E.Y. Dawson) J.E. Sutherland, L.E. Aguilar- Rosas & R. Aguilar-Rosas

Porphyrella californica G.J. Hollenberg

*Porphyridium marinum Kylin

West, J.A. 2016. Personal communication re: culture results.

Porphyropsis coccinea var. dawsonii G.J. Hollenberg & I.A. Abbott

Predaea masonii (Setchell & N.L. Gardner) De Toni

*Prionitis andersoniana J. Agardh

Former name: Prionitis angusta (Harvey) Okamura Current name: Prionitis linearis Kylin

Gabrielson, P.W. 2008. On the absence of previously reported Japanese and Peruvian species of Prionitis (Halymeniaceae, Rhodophyta) in the northeast Paciﬁc. Phycological Research 56: 105-114.

Prionitis australis (J. Agardh) J. Agardh

Former name: Prionitis cornea (Okamura) E.Y. Dawson Current name: not in California Gabrielson, P.W. 2008. On the absence of previously reported Japanese and Peruvian species of Prionitis (Halymeniaceae, Rhodophyta) in the northeast Paciﬁc. Phycological Research 56: 105-114.

Prionitis ﬁliformis Kylin

Prionitis lanceolata (Harvey) Harvey

Prionitis linearis Kylin

Former name: Prionitis lyallii Harvey Current name: Prionitis sternbergii (C. Agardh) J. Agardh

Gabrielson, P.W. 2008. Molecular sequencing of Northeast Paciﬁc type material reveals two earlier names for Prionitis lyallii, Prionitis jubata and Prionitis sternbergii, with brief comments on Grateloupia versicolor (Halymeniaceae, Rhodophyta). Phycologia 47: 89-97.

Prionitis simplex G.J. Hollenberg & I.A. Abbott

Former name: Pseudogloiophloea confusa (Setchell) Levring Current name: Scinaia confusa (Setchell) J.M. Huisman

Huisman, J.M. 1985. The Scinaia assemblage (Galaxauraceae, Rhodophyta): a re-appraisal. Phycologia 24: 403-418.

Former name: Pseudolithophyllum neofarlowii (Setchell & Mason) W.H. Adey Former name: Spongites tumidus (Foslie) K.A.Miller, P.W.Gabrielson, Miklasz, E.van der Merwe & Maneveldt Current name: Chamberlainium tumidus (Foslie) A. Caragnano, A. Foetisch, G.W. Maneveldt & C.E. Payri

Caragnano, A., Foetisch, A., Maneveldt, G.W., Millet, L., Liu, L.C., Lin, S.M., Rodondi, G. & Payri, C.E. 2018. Revision of Corallinaceae (Corallinales, Rhodophyta): recognizing Dawsoniolithon gen. nov., Parvicellularium gen. nov. and Chamberlainoideae subfam. nov. containing Chamberlainium gen. nov. and Pneophyllum. Journal of Phycology 54: 391- 409. van der Merwe, E., Milklasz, K., Channing, A., Maneveldt, G.W., & Garbrielson, P.W. 2015. DNA sequencing resolves species of Spongites (Corallinales, Rhodophyta) in the Northeast Paciﬁc and South Africa, including S. argulhensis sp. nov. Phycologia 54: 471-490. Former name: Pseudoscinaia snyderiae Setchell Current name: Scinaia snyderae (Setchell) J.M. Huisman

Huisman, J.M. 1985. The Scinaia assemblage (Galaxauraceae, Rhodophyta): a re-appraisal. Phycologia 24: 403-418.

Former name: Pterocladia caloglossoides (M.A. Howe) E.Y. Dawson Current name: Pterocladiella caloglossoides (M.A. Howe) B. Santelices

Santelices, B. 1998. Taxonomic review of the species of Pterocladia. Journal of Applied Phycology 10: 237-252.

Former name: Pterocladia capillacea (S.G. Gmelin) Bornet Current name: Pterocladiella capillacea (S.G. Gmelin) B. Santelices & M.H. Hommersand

Santelices, B. & Hommersand, M.H. 1997. Pterocladiella, a new genus in the Gelidiaceae (Gelidiales, Rhodophyta). Phycologia 36: 114-119.

Former name: Pterocladia media E.Y. Dawson Current name: Pterocladiella media (E.Y. Dawson) G.H. Boo & K.A. Miller

*Pterocladiella luxurians (Collins) G.H. Boo & K.A. Miller

Pterochondria woodii (Harvey) G.J. Hollenberg

Former name: Pterochondria woodii var. pygmaea (Setchell) E.Y. Dawson Current name: Pterochondria woodii (Harvey) G.J. Hollenberg

Former name: Pterosiphonia baileyi (Harvey) Falkenberg Former name: Symphyocladia baileyi (Harvey) Savoie & G.W. Saunders Current name: Symphyocladiella baileyi (Harvey) D.Bustamante, B.Y.Won, S.C.Lindstrom & T.O.Cho Bustamante, D.E., Won, B.Y., Lindstrom, S.C. & Cho, T.O. 2019. The new genus Symphyocladiella gen. nov. (Ceramiales, Rhodophyta) based on S. bartlingiana comb. nov. from the Paciﬁc Ocean. Phycologia 58(1): 9-17. Savoie, A.M. & Saunders, G.W. 2016. A molecular phylogenetic and DNA barcode assessment of the tribe Pterosiphonieae (Ceramiales, Rhodophyta) emphasizing the Northeast Paciﬁc. Botany 94: 917-939.

Former name: Pterosiphonia bipinnata (Postels & Ruprecht) Falkenberg sensu Abbott & Hollenberg 1976 Former Name: Polyostea bipinnata (Postels & Ruprecht) Ruprecht Current name: Savoiea bipinnata (Postels & Ruprecht) M.J. Wynne

Wynne, M.J. 2018. The status of Polyostea Ruprecht (1850) and the proposal of Savoiea gen. nov. (Rhodomelaceae, Rhodophyta). Notulae Algarum 69: 1-4.

Former name: Pterosiphonia clevelandii (Farlow) G.J. Hollenberg Current name: Pterosiphonia farlowii G.J. Hollenberg

Hollenberg, G.J. 1976. Correction of algal binomial. Taxon 25: 122.

Former name: Pterosiphonia dendroidea (Montagne) P. Falkenberg Former name: Symphyocladia dendroidea (Montagne) Savoie & G.W. Saunders Current name: Symphyocladiella dendroidea (Montagne) D.Bustamante, B.Y.Won, S.C.Lindstrom & T.O.Cho

Bustamante, D.E., Won, B.Y., Lindstrom, S.C. & Cho, T.O. 2019. The new genus Symphyocladiella gen. nov. (Ceramiales, Rhodophyta) based on S. bartlingiana comb. nov. from the Paciﬁc Ocean. Phycologia 58(1): 9-17. Savoie, A.M. & Saunders, G.W. 2016. A molecular phylogenetic and DNA barcode assessment of the tribe Pterosiphonieae (Ceramiales, Rhodophyta) emphasizing the Northeast Paciﬁc. Botany 94: 917-939.

Former name: Pterosiphonia pennata (C. Agardh) P. Falkenberg sensu Abbott & Hollenberg 1976 Former name: Pterosiphonia californica Kylin Current name: Xiphosiphonia pennata (C. Agardh) Savoie & G.W. Saunders

Norris, J.N. Marine Algae of the Northern Gulf of California, II: Rhodophyta. Smithsonian Contributions to Botany 96. pp. [i]-xvi, [1]-555. Savoie, A.M. & Saunders, G.W. 2016. A molecular phylogenetic and DNA barcode assessment of the tribe Pterosiphonieae (Ceramiales, Rhodophyta) emphasizing the Northeast Paciﬁc. Botany 94: 917-939. Former name: Pterosiphonia robusta N.L. Gardner Former name: Polyostea robusta (N.L. Gardner) A.M. Savoie & G.W. Saunders Current name: Savoiea robusta (N.L. Gardner) M.J. Wynne

Savoie, A.M. & Saunders, G.W. 2016. A molecular phylogenetic and DNA barcode assessment of the tribe Pterosiphonieae (Ceramiales, Rhodophyta) emphasizing the Northeast Paciﬁc. Botany 94: 917-939. Wynne, M.J. 2018. The status of Polyostea Ruprecht (1850) and the proposal of Savoiea gen. nov. (Rhodomelaceae, Rhodophyta). Notulae Algarum 69: 1-4.

Ptilota ﬁlicina J. Agardh

Ptilothamnion codicola (E.Y. Dawson) I.A. Abbott

Ptilothamnionopsis lejolisea (Farlow) P.S. Dixon

Pugetia fragilissima Kylin

Pulvinia epiphytica G.J. Hollenberg

*Pyropia bajacaliforniensis L.E. Aguilar Rosas & J.R. Hughey

*Pyropia columbiensis S.C. Lindstrom

*Pyropia conwayae (S.C. Lindstrom & K.M. Cole) S.C. Lindstrom

Former name: Pyropia hiberna (S.C. Lindstrom & K.M. Cole) S.C. Lindstrom Current name: Pyropia lanceolata (Setchell & Hus) S.C. Lindstrom

Lindstrom SC, Hughey JR, Rosas LEA (2015) Four new species of Pyropia (Bangiales, Rhodophyta) from the west coast of North America: the Pyropia lanceolata species complex updated. PhytoKeys 52: 1-22. doi: 10.3897/ phytokeys.52.5009 Lindstrom, S.C. & Cole, K.M. 1992. The Porphyra lanceolata - P. pseudolanceolata (Bangiales, Rhodophyta) complex unmasked: recognition of new species based on isoenzymes, morphology, chromosomes and distributions. Phycologia 31: 431-448. Sutherland, J.E., Lindstrom, S.C., Nelson, W.A., Brodie, J., Lynch, M.D.J., Hwang, M.S., Choi, H.-G., Miyata, M., Kikuchi, N., Oliveira, M.C., Farr, T., Neefus, C.D., Mols-Mortensen, A., Milstein, D., Müller, K.M. 2011. A new look at an ancient order: generic revision of the Bangiales (Rhodophyta). Journal of Phycology 47: 1131-1151.

*Pyropia kanakaensis (Mumford) S.C. Lindstrom

Silva, P.C. 1979. The benthic algal ﬂora of central San Francisco Bay. In: San Francisco Bay: the Urbanized Estuary. (Conomos, T.J., ed.), pp. 287- 345. San Francisco: Paciﬁc Division, American Association for the Advancement of Science. Sutherland, J.E., Lindstrom, S.C., Nelson, W.A., Brodie, J., Lynch, M.D.J., Hwang, M.S., Choi, H.-G., Miyata, M., Kikuchi, N., Oliveira, M.C., Farr, T., Neefus, C.D., Mols-Mortensen, A., Milstein, D., Müller, K.M. 2011. A new look at an ancient order: generic revision of the Bangiales (Rhodophyta). Journal of Phycology 47: 1131-1151.

*Pyropia montereyensis S.C. Lindstrom & J.R. Hughey

*Pyropia protolanceolata S.C. Lindstrom & J.R. Hughey

*Pyropia pseudolanceolata (V. Krishnamurthy) S.C. Lindstrom

*Pyropia suborbiculata (Kjellman) J.E. Sutherland, H.-G. Choi, M.S. Hwang & W.A. Nelson

Hughey, J.R. 2013. Noteworthy collections. California. Porphyra suborbiculata. Madroño 58: 201. Miller, K.A., Aguilar-Rosas, L.E. & Pedroche, F.F. 2011. A review of non- native seaweeds from California, USA and Baja California, Mexico. Hidrobiologica 21:240-254. Sutherland, J.E., Lindstrom, S.C., Nelson, W.A., Brodie, J., Lynch, M.D.J., Hwang, M.S., Choi, H.-G., Miyata, M., Kikuchi, N., Oliveira, M.C., Farr, T., Neefus, C.D., Mols-Mortensen, A., Milstein, D., Müller, K.M. 2011. A new look at an ancient order: generic revision of the Bangiales (Rhodophyta). Journal of Phycology 47: 1131-1151.

Reticulobotrys catalinae E.Y. Dawson

Former name: Rhodochorton concrescens K.M. Drew Current name: Meiodiscus concrescens (K.M. Drew) P.W. Gabrielson

Rhodochorton purpureum (Lightfoot) Rosenvinge

Rhododiscus carmelita G.J. Hollenberg & I.A. Abbott Former name: Rhodoglossum afﬁne (Harvey) Kylin Current name: Mazzaella afﬁnis (Harvey) S. Fredericq

Former name: Rhodoglossum californicum (J. Agardh) I.A. Abbott Current name: Mazzaella californica (J. Agardh) De Toni f.

Former name: Rhodoglossum oweniae G.J. Hollenberg & I.A. Abbott Current name: Mazzaella californica (J. Agardh) De Toni f.

Former name: Rhodoglossum parvum G.M. Smith & G.J. Hollenberg Current name: Mazzaella parva (G.M. Smith & G.J. Hollenberg) J.R. Hughey, P.C. Silva, & M.H. Hommersand

Former name: Rhodoglossum roseum (Kylin) G.M. Smith Current name: Mazzaella rosea (Kylin) S. Fredericq

*Rhodella violacea (P. Kornmann) W. Wehrmeyer

West, J.A. 2016. Personal communication re: culture results.

Former name: Rhodomela larix (Turner) C. Agardh Current name: Neorhodomela larix (Turner) M. Masuda

Masuda, M. 1982. A systematic study of the tribe Rhodomeleae (Rhodomelaceae, Rhodophyta). Journal of the Faculty of Science, Hokkaido University, Series V (Botany) 12: 209-400.

Former name: Rhodophysema elegans (P.L. & H.M. Crouan) Batters sensu Abbott & Hollenberg 1976 Current name: Rhodophysema odonthaliae M. Masuda & M. Ohta

Masuda, M. & Ohta, M. 1981. Taxonomy and life history of Rhodophysema odonthaliae sp. nov. (Rhodophyta). Japanese Journal of Phycology 29: 15- 21. Saunders, G.W., Maggs, C.A. & McLachlan, J.L. 1989. Life history variation in Rhodophysema elegans (Palmariales, Rhodophyta) from the North Atlantic and crustose Rhodophysema spp. from the North Paciﬁc. Canadian Journal of Botany 67: 2857-2872.

Former name: Rhodophysema elegans var. polystromatica (Batters) P.S. Dixon sensu Abbott & Hollenberg 1976 Current name: Rhodophysema minus G.J. Hollenberg & I.A. Abbott

Saunders, G.W., Maggs, C.A. & McLachlan, J.L. 1989. Life history variation in Rhodophysema elegans (Palmariales, Rhodophyta) from the North Atlantic and crustose Rhodophysema spp. from the North Paciﬁc. Canadian Journal of Botany 67: 2857-2872.

Rhodoptilum plumosum (Harvey & J.W. Bailey) Kylin

Rhodymenia arborescens E.Y. Dawson

Rhodymenia californica Kylin

Rhodymenia callophyllidoides G.J. Hollenberg & I.A. Abbott

Former name: Rhodymenia californica var. attenuata (E.Y. Dawson) E.Y. Dawson Current name: Rhodymenia californica Kylin

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181.

Former name: Rhodymenia hancockii E.Y. Dawson Current name: Rhodymenia arborescens E.Y. Dawson (in California)

Former name: Rhodymenia lobata E.Y. Dawson Current name: Rhodymenia paciﬁca Kylin

Gabrielson, P.W., Widdowson, T.B. & Lindstrom, S.C. 2004. Keys to the seaweeds and seagrasses of Oregon and California. Phycological Contribution 6: iv + 181.

Rhodymenia paciﬁca Kylin

Former name: Rhodymenia palmata var. mollis Setchell & N.L. Gardner Current name: Palmaria mollis (Setchell & N.L. Gardner) van der Meer & Bird Current name: Devaleraea mollis (Setchell & N.L. Gardner) G.W. Saunders, C.J. Jackson & Salomaki

van der Meer, J.P. & Bird, C.J. 1985. Palmaria mollis stat. nov.: a newly recognized species of Palmaria (Rhodophyceae) from the northeast Paciﬁc coast. Canadian Journal of Botany 63: 398-403. Saunders, G.W., Jackson, C., & Salomaki, E.D. 2017. Phylogenetic analyses of transcriptome data resolve familial assignments for genera of the red-algal Acrochaetiales-Palmariales complex (Nemaliophycidae)

Rhodymenia rhizoides E.Y. Dawson

Rhodymenia sympodiophyllum E.Y. Dawson & Neushul

Former name: Rhodymeniocolax botryoidea Setchell Current name: Rhodymeniocolax botryoideus Setchell

Sarcodiotheca furcata (Setchell & N.L. Gardner) Kylin

Sarcodiotheca gaudichaudii (Montagne) P.W. Gabrielson

Scagelia occidentalis (Kylin) E.M. Wollaston

Schimmelmannia plumosa (Setchell) I.A. Abbott

Former name: Schizymenia dawsonii I.A. Abbott Current name: Sebdenia dawsonii (I.A. Abbott) G.I. Hansen

Hansen, G.I. 1989. Schizymenia dawsonii and its relation to the genus Sebdenia (Sebdeniaceae, Rhodophyta). Taxon 38: 54-59.

Former name: Schizymenia epiphytica (Setchell & Lawson) G.M. Smith & G.J. Hollenberg Current name: Peyssonneliopsis epiphytica Setchell & G.W. Lawson

Setchell, W.A. 1905. Parasitic Florideae of California. Nuova Notarisia 17: 59-63. Smith, G.M. & Hollenberg, G.J. 1943. On some Rhodophyceae from the Monterey Peninsula, California. American Journal of Botany 30: 211-223.

*Schizymenia dubyi (Chauvin ex Duby) J. Agardh

Hughey, J.R. & Miller, K.A. 2009. Noteworthy collection. Madroño 56: 64. Saunders, G.W., Birch, T.C. & Dixon, K.R. 2015. A DNA barcode survey of Schizymenia (Nemastomatales, Rhodophyta) in Australia and British Columbia reveals overlooked diversity including S. tenuis sp. nov. and Predaea borealis sp. nov. Botany 93: 859-871.

Schizymenia paciﬁca (Kylin) Kylin

*Schizymenia sp.

Saunders, G.W., Birch, T.C. & Dixon, K.R. 2015. A DNA barcode survey of Schizymenia (Nemastomatales, Rhodophyta) in Australia and British Columbia reveals overlooked diversity including S. tenuis sp. nov. and Predaea borealis sp. nov. Botany 93: 859-871.

Sciadophycus stellatus E.Y. Dawson

Former name: Scinaia articulata Setchell Current name: Scinaia johnstoniae Setchell

León-Cisneros, K., Riosmena-Rodríguez, R., Neto, A.I. & Hernández- Carmona, G. 2009. The red algal genus Scinaia (Nemaliales; Rhodophyta) on the Gulf of California, Mexico: a taxonomic account. Phycologia 48: 186-210.

Scinaia johnstoniae Setchell Scinaia latifrons M.A. Howe

Former name: Serraticardia macmillanii (Yendo) P.C. Silva Current name: Johansenia macmillanii (Yendo) K.R. Hind & G.W. Saunders

Hind, K.R. & Saunders, G.W. 2013a. A molecular phylogenetic study of the tribe Corallineae (Corallinales, Rhodophyta) with an assessment of genus- level taxonomic features and descriptions of novel genera. J. Phycology 49: 103-114.

Smithora naiadum (C.L. Anderson) G.J. Hollenberg

Sorella delicatula (N.L. Gardner) G.J. Hollenberg

Sorella pinnata G.J. Hollenberg

Spyridia ﬁlamentosa (Wulfen) Harvey

Former name: Stenogramme interrupta (C. Agardh) Montagne sensu Abbott & Hollenberg 1976 Current name: Stenogramma californicum Harvey

Stylonema alsidii (Zanardini) K.M. Drew

Stylonema cornu-cervi Reinsch

*Symphyocladiella gracilis (Kylin) D. Bustamante, B.Y. Won, S.C. Lindstrom & T.O.Cho 2019

*Symphyocladiella rosea (A.M. Savoie & G.W. Saunders) D. Bustamante, B.Y. Won, S.C. Lindstrom & T.O. Cho 2019

*Symphyocladia spp.

Savoie, A.M. & Saunders, G.W. 2016. A molecular phylogenetic and DNA barcode assessment of the tribe Pterosiphonieae (Ceramiales, Rhodophyta) emphasizing the Northeast Paciﬁc. Botany 94: 917-939.

Former name: Tenarea ascripticia (Foslie) W.H. Adey Former name: Lithophyllum pustulatum f. ascripticium Foslie Current name: Titanoderma pustulatum (Lamouroux) Nägeli in C. Nägeli & C. Cramer

Van der Merwe, E. & G.W. Maneveldt. 2016. A modern account of the South African non-geniculate Lithophylloideae (Corallinales, Corallinophycidae, Rhodophyta). South African Journal of Botany 103: 247-267 Woelkerling, W.J. & Campbell, S.J. 1992. An account of the southern Australian species of Lithophyllum (Corallinaceae, Rhodophyta). Bulletin of the British Museum (Natural History) Botany 22: 1-107.

Former name: Tenarea dispar (Foslie) W.H. Adey Current name: Lithophyllum dispar (Foslie) Foslie

Woelkerling, W.J. & Campbell, S.J. 1992. An account of the southern Australian species of Lithophyllum (Corallinaceae, Rhodophyta). Bulletin of the British Museum (Natural History) Botany 22: 1-107.

Former name: Tiffaniella phycophilum (W.R. Taylor) Gordon Current name: Tiffaniella phycophila (W.R. Taylor) Gordon

Tiffaniella snyderae (Farlow) I.A. Abbott

Former name: Trailliella intricata Batters Current name: Bonnemaisonia californica Buffham

Veleroa subulata E.Y. Dawson

Weeksia digitata I.A. Abbott Weeksia howellii Setchell & N.L. Gardner

Weeksia reticulata Setchell

Weeksia templetonii Setchell & N.L. Gardner

Former name: Yamadaia americana E.Y. Dawson & R.L. Steele Current name: Chiharaea americana (E.Y. Dawson & R.L. Steele) P.T. Martone, S.C. Lindstrom, K.A. Miller & P.W. Gabrielson

Former name: Yamadaea melobesioides Segawa Current name: Chiharaea americana (E.Y. Dawson & R.L. Steele) P.T. Martone, S.C. Lindstrom, K.A. Miller & P.W. Gabrielson

Martone, P.T., Lindstrom, S.C., Miller, K.A. & Gabrielson, P.W. 2012. Chiharaea and Yamadaia (Corallinales, Rhodophyta) represent reduced and recently derived articulated coralline morphologies. Journal of Phycology 48: 859-868. Dawson, E.Y. & Steele, R.L. 1964. An eastern Paciﬁc member of Yamadaia (Corallinaceae) from the San Juan Islands, Washington. Nova Hedwigia 8: 1-4. Garbary, D.J., Johansen, H.W. & Scagel, R.F. 1981. Aspects of the morphology, ultrastructure and distribution of the two species of Yamadaea Segawa (Corallinaceae, Rhodophyta). Japanese Journal of Phycology 29: 7- 13.