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Seaweeds of California

(draft: Thu Nov 13 14:12:04 2014)

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. kathyannmiller@berkeley.edu

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.

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.

*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.

*Cladophora amphibia Collins

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.

Cladophora columbiana Collins

Cladophora elmorei E.Y. Dawson

Cladophora graminea Collins

Cladophora microcladioides Collins

Cladophora sakaii I.A. Abbott

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 (in press DOI: 10.1515/bot-2014-0024)

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

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: 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

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 compressa (Linnaeus) Greville
Current name: Ulva compressa Linnaeus

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

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 intestinalis (Linnaeus) Link
Current name: Ulva intestinalis Linnaeus

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

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

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: 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

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.

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

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.

Lola lubrica (Setchell & N.L. Gardner) A. Hamel & G. Hamel

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.

*Rosenvingiella constricta (Setchell & N.L. Gardner) P.C. Silva

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.

*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

Sussmann, A.V. & DeWreede, R.E. 2007. Relative contribution of vegetative propagation and sexual reproduction in the maintenance of Acrosiphonia (Chlorophyta) populations. Phycologia 46: 79-85.

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

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: 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 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 lactuca Linnaeus

Former name: Ulva lobata (Kützing) Setchell & N.L. Gardner
Current name: Ulva lobata (Kützing) Harvey

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

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.

Ulva stenophylla Setchell & N.L. Gardner

Ulva rigida C. Agardh

*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

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.

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

Agarum fimbriatum Harvey

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

Colpomenia bullosa (DeA. Saunders) Yamada

*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

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 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

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., 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.
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.

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.

Dictyoneurum californicum Ruprecht

*Dictyopteris sp. nov.

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

Former name: Ectocarpus acutus Setchell & N.L. Gardner
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.

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

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.

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.

Eisenia arborea J.E. Areschoug

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

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 paradoxa var. cylindrica (DeA. Saunders) H.S. Kim & I.K. Lee

Kim, H.S. & Lee, I.K. 1994. Morphotaxonomic studies on the Korean Ectocarpaceae (Phaeophyta). III. Genus Feldmannia Hamel, specially referred to morphogenesis and phylogenetic relationship among related genera. Korean Journal of Phycology 9: 153-168.

Former name: Feldmannia globifera (Kützing) G. Hamel
Current name: Feldmannia paradoxa (Montagne) G. Hamel

Kim, H.S. & Lee, I.K. 1994. Morphotaxonomic studies on the Korean Ectocarpaceae (Phaeophyta). III. Genus Feldmannia Hamel, specially referred to morphogenesis and phylogenetic relationship among related genera. Korean Journal of Phycology 9: 153-168.

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: Hincksia mitchelliae (Harvey) 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 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

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.

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

Haplogloia andersonii (Farlow) Levring

Hapalospongidion gelatinosum DeA. Saunders

Hapterophycus canaliculatus Setchell & N.L. Gardner

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

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

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

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.

Former name: Hesperophycus harveyanus (Decaisne) Setchell & N.L. Gardner
Current name: Hesperophycus californicus P.C. Silva

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.

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

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.

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 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

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

Druehl, L.D. 1968. Taxonomy and distribution of northeast Pacific species of Laminaria. Canadian Journal of Botany 46: 539-547.

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

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.

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: Streblonema collinsii E. Taskin, M.J. Wynne & M. Öztürk

Taskin, E., Wynne, M.J. & Ö;ztürk, M. 2010. Cylindrocarpus kuckuckii sp. nov. (Chordariaceae, Phaeophyceae), a newly recognized species from the Aegean Sea (Turkey). Nova Hedwigia 90: 263-270.

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

Syringoderma abyssicola (Setchell & N.L. Gardner) Levring

*Syringoderma phinneyi Henry & D. G. Müller

Henry, E.C. & Müller, D.G. 1983. Studies on the life history of Syringoderma phinneyi sp. nov. (Phaeophyceae). Phycologia 22: 387-393.

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

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.

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

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 microscopicum (Kützing) Nägeli

Former name: Acrochaetium pacificum Kylin
Current name: Colaconema pacificus (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) Rao
Current name: Colaconema rhizoideum (K.M. Drew) 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.

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: Acrochaetium savianum (Meneghini) Nägeli

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.

Former name: Acrochaetium vagum (K.M. Drew) Jao sensu Abbott & Hollenberg 1976
Current name: Acrochaetium porphyrae (K.M. Drew) G.M. Smith

Tam, C.E., Cole, K.M. & Garbary, D.J. 1987. In situ and in vitro studies on the endophytic red algae Audouinella porphyrae and A. vaga (Acrochaetiales). Canadian Journal of Botany 65: 532-538.
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: 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.

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
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

Former name: Antithamnionella breviramosa (E.Y. Dawson) Womersley & J.W. Bailey
Current name: Antithamnionella elegans (Berthold) J. Price & D. John

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.
Cormaci, M. & Furnari, G. 1988. Antithamnionella elegans (Berthold) Cormaci et Furnari (Ceramiaceae, Rhodophyta) and related species, with the description of two new varieties. Phycologia 27: 340-346.
Prud'homme van Reine, W.F. 1982. A taxonomic revision of the European Sphacelariaceae (Sphacelariales, Phaeophyceae). Leiden Bot. Ser. V 6. Pp. 293.

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

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.

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

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 orbigniana (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 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

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 dissecta Setchell & Swezy

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 edentata Kylin

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.

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

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 obtusifolia J. Agardh

Callophyllis pinnata Setchell & Swezy

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

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 thompsonii 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 variegata (Bory de Saint-Vincent) Kützing

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 violacea J. Agardh

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.

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.

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 var. bodegensis

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.

*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

Chondria nidifica Harvey

Chondria oppositiclada E.Y. Dawson

Former name: Choreocolax polysiphoniae Reinsch
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

Clathromorphum parcum (Setchell & Foslie) W.H. Adey

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

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.

*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

Corallina frondescens Postels & Ruprecht

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 californica (Farlow) J. Agardh

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.

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

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

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.

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.

Former name: Erythrotrichia porphyroides N.L. Gardner
Current name: Porphyrostromium boryanum (Montagne) P.C. Silva

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.

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

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 laciniata J. Agardh
Current name: Gloiocladia laciniata (J. Agardh) 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.

Faucheocolax attenuata Setchell

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

Fryeella gardneri (Setchell) Kylin

*Fuscifolium papenfussii (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.

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 nudifrons N.L. Gardner

Gelidium purpurascens N.L. Gardner

Former name: Gelidium pusillum (Stackhouse) Le Jolis
Current name: Gelidium coulteri Harvey

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

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.

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

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.

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

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.

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

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.

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

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.

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

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.

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

Gloiopeltis furcata (Postels & Ruprecht) J. Agardh

Gloiosiphonia californica (Farlow) J. Agardh

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

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.

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
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) Farlow
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

Former name: Gracilaria veleroae E.Y. Dawson
Current name: Gracilaria mammillaris (Montagne) M.A. Howe

Abbott, I.A. 1995. A decade of species of Gracilaria (sensu lato). In: Taxonomy of Economic Seaweeds (Abbott, I.A., ed.) Volume 5, pp. 185-195. La Jolla, California: California Sea Grant College System.

*Gracilaria vermiculophylla (Ohmi) G.F. Papenfuss

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.

Former name: Gracilaria verrucosa (Hudson) G.F. Papenfuss
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.

Gracilariophila gardneri Setchell

Gracilariophila oryzoides Setchell & Wilson

*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
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

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: 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
Current name: Ahnfeltiopsis leptophylla (J. 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.

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

Herposiphonia hollenbergii E.Y. Dawson

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
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: Spongites decipiens (Foslie) Y.M. Chamberlain

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
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

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.

Former name: Iridaea cornucopiae Postels & Ruprecht
Current name: Mazzaella parksii (Setchell & N.L. Gardner) J.R. 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.

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
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

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.

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

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

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.

Janczewskia gardneri Setchell & Guernsey

Janczewskia lappacea Setchell

Janczewskia moriformis Setchell

Janczewskia solmsii Setchell & Guernsey

Jania adhaerens Lamouroux

Former name: Jania crassa Lamouroux sensu Abbott & Hollenberg 1976
Current name: Jania verrucosa Lamouroux

Womersley, H.B.S. & Johansen, H.W. 1996. Subfamily Corallinoidea (Areschoug) Foslie 1908: 19. In: The marine benthic flora of southern Australia - Part IIIB - Gracilariales, Rhodymeniales, Corallinales and Bonnemaisoniales. (Womersley, H.B.S., ed.), pp. 288-317. Adelaide & Canberra: Australian Biological Resources Study & the State Herbarium of South Australia.

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

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.

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
Current name: Pseudolithophyllum muricatum (Foslie) R.S. Steneck & R.T. Paine

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.

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

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.

*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.

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.

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.

Membranoptera weeksiae Setchell & N.L. Gardner

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

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: 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: Clathromorphum reclinatum (Foslie) W.H. Adey

Adey, W.H. 1970. A revision of the Foslie crustose coralline herbarium. Kongelige Norske Videnskabers Selskabs Skrifter 1: 1-46.

Neoptilota californica (Harvey) Kylin

Neoptilota densa (C. Agardh) Kylin

Neoptilota hypnoides (Harvey) Kylin

*Neosiphonia harveyi (J.W. Bailey) M.-S. Kim, Choi, M. Guiry & G.W. Saunders

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.

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

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: 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.

*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.

Pikea robusta I.A. Abbott

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

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 recurvatum E.M. Wollaston
Current name: Pterothamnion recurvatum (E.M. Wollaston) 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 villosum Kylin
Current name: Pterothamnion villosum (Kylin) 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.

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
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
Current name: Neosiphonia harveyi (J.W. Bailey) M.-S. Kim, H.-G. Choi, M. Guiry, & G.W. Saunders

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.

Polysiphonia bajacali G.J. Hollenberg

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

Polysiphonia confusa G.J. Hollenberg

*Polysiphonia denudata (Dillwyn) Greville

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.

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
Current name: Neosiphonia savatieri (Hariot) 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 johnstonii Setchell & N.L. Gardner

Polysiphonia mollis J. Hooker & Harvey

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

Polysiphonia paniculata Montagne

Polysiphonia scopulorum var. villum (J. Agardh) G.J. Hollenberg

Former name: Polysiphonia simplex G.J. Hollenberg
Current name: Neosiphonia simplex (G.J. Hollenberg) Y.-P. Lee

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.

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

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 lanceolata (Setchell & Hus) G.M. Smith
Current name: Pyropia lanceolata (Setchell & Hus) 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 miniata (C. Agardh) C. Agardh
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

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 perforata J. Agardh
Current name: Pyropia perforata (J. Agardh) 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.

Porphyra pulchra G.J. Hollenberg

*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

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 smithii G.J. Hollenberg & I.A. Abbott
Current name: Pyropia smithii (G.J. Hollenberg & I.A. Abbott) 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 thuretii E.Y. Dawson
Current name: Pyropia thuretii (Setchell & E.Y. Dawson) J.E. Sutherland, L.E. Aguilar-Rosas & R. Aguilar-Rosas

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.

Porphyrella californica G.J. Hollenberg

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.

Pseudolithophyllum neofarlowii (Setchell & Mason) W.H. Adey

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.

Pterocladia media E.Y. Dawson

Santelices, B. 1999. Taxonomic status of the species originally ascribed to the genus Pterocladia (Gelidiales, Rhodophyta). In: Taxonomy of Economic Seaweeds with reference to some Pacific species, Volume VII. (Abbott, I.A., ed.), pp. 71-80. La Jolla, California: California Sea Grant College System.

Pterochondria woodii (Harvey) G.J. Hollenberg

Pterochondria woodii var. pygmaea (Setchell) E.Y. Dawson

Pterosiphonia baileyi (Harvey) Falkenberg

Pterosiphonia bipinnata (Postels & Ruprecht) Falkenberg

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.

Pterosiphonia dendroidea (Montagne) P. Falkenberg

Former name: Pterosiphonia pennata (C. Agardh) P. Falkenberg
Current name: Pterosiphonia pennata (C. Agardh) Sauvageau

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

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.

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

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 pseudolanceolata (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.

*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

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.

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

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.

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

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.

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

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.

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

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.

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

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
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
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

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.

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

Rhodymenia sympodiophyllum E.Y. Dawson & Neushul

Rhodymeniocolax botryoidea 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.

Schizymenia pacifica (Kylin) Kylin [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.

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. 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
Current name: Stenogramma californicum Harvey

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.

Stylonema alsidii (Zanardini) K.M. Drew

Stylonema cornu-cervi Reinsch

Former name: Tenarea ascripticia (Foslie) W.H. Adey
Current name: Lithophyllum pustulatum f. ascripticium 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: 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

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.

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.