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Seaweeds of California

(draft: Mon Aug 4 17:35:24 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.

Bolbocoleon piliferum Pringsheim

Bryopsis corticulans Setchell

Bryopsis hypnoides Lamouroux

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

*Bryopsis spp.

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

*Caulerpa taxifolia (Vahl) C. Agardh

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

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

*Cladophora amphibia Collins

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

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

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

Codium hubbsii E.Y. Dawson

Codium johnstonei P.C. Silva

Codium setchellii N.L. Gardner

Collinsiella tuberculata Setchell & N.L. Gardner

Derbesia marina (Lyngbye) Solier

Derbesia prolifica W.R. Taylor

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

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

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

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

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

Former name: Enteromorpha intestinalis (Linnaeus) Link
Current name: Ulva intestinalis Linnaeus

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

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

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

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

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

Gomontia polyrhiza (Lagerheim) Bornet & Flahault

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

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

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.

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

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

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

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

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

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

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

Rhizoclonium riparium (Roth) Harvey

*Rhizoclonium tortuosum (Dillwyn) Kützing

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

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

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

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

Former name: Spongomorpha saxatilis (Ruprecht) F.S. Collins
Current name: Acrosiphonia saxatilis (Ruprecht) Vinogradova

Ulothrix flacca (Dillwyn) Thuret

Ulothrix implexa (Kützing) Kützing

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

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

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

Ulva californica Wille

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

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

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

Ulva lactuca Linnaeus

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

*Ulva pertusa Kjellman

*Ulva pseudocurvata Koeman & van den Hoek

Ulva stenophylla Setchell & N.L. Gardner

Ulva rigida C. Agardh

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

*Ulvaria fusca (Postels & Ruprecht) Vinogradova

Ulvella setchellii Dangeard

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

Urospora penicilliformis (Roth) J.E. Areschoug

Urospora wormskioldii (J.W. Hornemann) Rosenvinge

Brown Algae

Acinetospora nicholsoniae G.J. Hollenberg

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

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

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

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

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

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

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

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

Desmarestia kurilensis Yamada

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

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

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

Desmarestia viridis (O.F. Müller) Lamouroux

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

Dictyoneurum californicum Ruprecht

*Dictyopteris sp. nov.

Dictyopteris undulata Holmes

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

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

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

Ectocarpus chantransioides Setchell & N.L. Gardner

Ectocarpus corticulatus DeA. Saunders

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

Ectocarpus gonodioides Setchell & N.L. Gardner

Ectocarpus isopodicola E.Y. Dawson

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

Ectocarpus siliculosus (Dillwyn) Lyngbye

Ectocarpus simulans Setchell & N.L. Gardner

Ectocarpus taoniae Setchell & N.L. Gardner

Former name: Egregia laevigata Setchell
Current name: Egregia menziesii (Turner) J.E. Areschoug

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

Egregia menziesii (Turner) J.E. Areschoug

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

Eisenia arborea J.E. Areschoug

Elachista fucicola (Velley) J.E. Areschoug

*Elachista nigra Takamatsu

Endarachne binghamiae J. Agardh

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

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

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

Feldmannia irregularis (Kützing ) G. Hamel

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

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

*Fucus spiralis Linnaeus

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

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

Former name: Giffordia mitchelliae (Harvey) G. Hamel
Current name: Hincksia mitchelliae (Harvey) P.C. Silva

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

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

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

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

Haplogloia andersonii (Farlow) Levring

Hapalospongidion gelatinosum DeA. Saunders

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

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

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

Kuckuckia catalinae G.J. Hollenberg

*Laminaria cordata E.Y. Dawson

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

Laminaria ephemera Setchell

Laminaria farlowii Setchell

Laminaria setchellii P.C. Silva

Former name: Laminaria sinclairii (Harvey) Farlow, C.L. Anderson & Eaton
Current name: Laminaria sinclairii (Harvey ex J.D. Hooker & Harvey) Farlow, C.L. Anderson, & Eaton

Former name: Leathesia difformis (Linnaeus) J.E. Areschoug
Current name: Leathesia marina (Lyngbye) Decaisne

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

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

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

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

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

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

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

*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

Sargassum agardhianum Farlow

*Sargassum horneri (Turner) C. Agardh

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

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

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

Spongonema tomentosum (Hudson) Kützing

Sporochnus pedunculatus (Hudson) C. Agardh

Former name: Stictyosiphon tortilis (Ruprecht) Reinke
Current name: Stictyosiphon tortilis (Gobi) Reinke

Former name: Streblonema aecidioides De Toni
Current name: Laminariocolax aecidioides (Rosenvinge) A.F. Peters

*Streblonema anomalum Setchell & N.L. Gardner

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

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

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

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

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

*Acrochaetium catenulatum M.A. Howe

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

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

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

Acrochaetium microscopicum (Kützing) Nägeli

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

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

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

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

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

Former name: Acrochaetium thuretii (Bornet) Collins & Hervey
Current name: Acrochaetium savianum (Meneghini) Nägeli

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

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

Aglaothamnion cordatum (Børgesen) Feldmann-Mazoyer

Aglaothamnion endovagum (Setchell & N.L. Gardner) I.A. Abbott

*Aglaothamnion tenuissimum (Bonnemaison) Feldmann-Mazoyer

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

Former name: Ahnfeltia plicata (Hudson) Fries
Current name: Ahnfeltia fastigiata (Endlicher) Makienko

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

Amplisiphonia pacifica G.J. Hollenberg

Anisocladella pacifica Kylin

Antithamnion defectum Kylin

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

Antithamnion hubbsii E.Y. Dawson

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

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

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

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

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

*Asparagopsis armata Harvey

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

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

*"Bangia" maxima Gardner

*"Bangia" vermicularis Harvey

Besa papillaeformis Setchell

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

Binghamia californica J. Agardh

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

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

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

Bornetia californica I.A. Abbott

Bossiella californica (Decaisne) P.C. Silva

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

Bossiella chiloensis (Decaisne) H.W. Johansen

Bossiella orbigniana (Decaisne) P.C. Silva

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

Bossiella plumosa (Manza) P.C. Silva

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

Botryocladia neushulii E.Y. Dawson

Botryocladia pseudodichotoma (Farlow) Kylin

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

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

Branchioglossum undulatum E.Y. Dawson

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

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

Callocolax fungiformis Kylin

Callophyllis crenulata Setchell

*Callophyllis dissecta Setchell & Swezy

*Callophyllis edentata Kylin

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

Callophyllis flabellulata Harvey

Callophyllis heanophylla Setchell

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

*Callophyllis odonthalioides Setchell

Callophyllis obtusifolia J. Agardh

Callophyllis pinnata Setchell & Swezy

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

Callophyllis thompsonii Setchell

*Callophyllis variegata (Bory de Saint-Vincent) Kützing

Callophyllis violacea J. Agardh

Carpopeltis bushiae (Farlow) Kylin

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

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

Ceramium equisetoides E.Y. Dawson

*Ceramium kondoi Yendo

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

Ceramium gardneri Kylin

*Ceramium interruptum Setchell & N.L. Gardner

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

Ceramium zacae Setchell & N.L. Gardner

Champia parvula (C. Agardh) Harvey

Former name: Chiharaea bodegensis H.W. Johansen
Current name: Chiharaea americana var. bodegensis

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

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

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

Chondria arcuata G.J. Hollenberg

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

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

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

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

Colacodasya californica G.J. Hollenberg

*Colaconema bonnemaisoniae Batters

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

*Colaconema plumosum (K.M. Drew) Woelkerling

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

Constantinea simplex Setchell

Corallina bathybentha E.Y. Dawson

Corallina frondescens Postels & Ruprecht

Former name: Corallina officinalis var. chilensis (Decaisne) Kützing
Current name: Corallina officinalis Decaisne

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

Former name: Cruoriopsis aestuarii G.J. Hollenberg
Current name: Gloiosiphonia californica (Farlow) J. Agardh

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

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

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.

Former name: Delesseria decipiens J. Agardh
Current name: Cumathamnion decipiens (J. Agardh) M.J. Wynne & G.W. Saunders

Dermocorynus occidentalis G.J. Hollenberg

Dilsea californica (J. Agardh) Kuntze

*Dilsea pygmaea (Setchell) Setchell

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

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

Erythrotrichia carnea (Dillwyn) J. Agardh

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

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

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

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

Erythrotrichia welwitschii (Ruprecht) Batters

Farlowia compressa J. Agardh

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

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

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

Faucheocolax attenuata Setchell

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

Fryeella gardneri (Setchell) Kylin

*Fuscifolium papenfussii (Krishnamurthy) S.C. Lindstrom

Gardneriella tuberifera Kylin

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

Former name: Gastroclonium coulteri (Harvey) Kylin
Current name: Neogastroclonium subarticulatum (Turner) L. Le Gall, Dalen & G.W. Saunders

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

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

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

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

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

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

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

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

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

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

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

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

Gloiopeltis furcata (Postels & Ruprecht) J. Agardh

Gloiosiphonia californica (Farlow) J. Agardh

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

Gloiosiphonia verticillaris Farlow

Gonimophyllum skottsbergii Setchell

Goniotrichopsis sublittoralis G.M. Smith

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

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

Former name: Gracilaria andersonii (Grunow) Kylin
Current name: Gracilaria papenfussii I.A. Abbott

Gracilaria robusta Setchell

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

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

*Gracilaria vermiculophylla (Ohmi) G.F. Papenfuss

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

Gracilariophila gardneri Setchell

Gracilariophila oryzoides Setchell & Wilson

*Gracilariopsis chorda (Holmes) Ohmi

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

Former name: Grateloupia doryphora (Montagne) M.A. Howe
Current name: Grateloupia californica Kylin

*Grateloupia turuturu Yamada

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

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

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

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

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

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

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

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

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

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

Former name: Herposiphonia tenella f. secunda (C. Agardh) G.J. Hollenberg
Current name: Herposiphonia secunda (C. Agardh) Ambronn

Herposiphonia verticillata (Harvey) Kylin

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

Heterosiphonia erecta N.L. Gardner

Former name: Heterosiphonia japonica Yendo
Current name: Heterosiphonia densiuscula Kylin

Hildenbrandia dawsonii (Ardre) G.J. Hollenberg

Hildenbrandia occidentalis Setchell

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

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

Former name: Hydrolithon decipiens (Foslie) W.H. Adey
Current name: Spongites decipiens (Foslie) Y.M. Chamberlain

Hymenena cuneifolia M.S. Doty

Hymenena flabelligera (J. Agardh) Kylin

Former name: Hymenena kylinii N.L. Gardner
Current name: Hymenena flabelligera (J. Agardh) Kylin

Hymenena multiloba (J. Agardh) Kylin

Hymenena setchellii N.L. Gardner

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

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

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

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

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

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

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

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

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

Janczewskia gardneri Setchell & Guernsey

Janczewskia lappacea Setchell

Janczewskia moriformis Setchell

Janczewskia solmsii Setchell & Guernsey

Jania adhaerens Lamouroux

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

Jania tenella (Kützing) Grunow

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

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

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

Kallymenia pacifica Kylin

Former name: Kylinia rosulata Rosenvinge
Current name: Acrochaetium rosulatum (Rosenvinge) G.F. Papenfuss

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

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

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

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

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

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

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

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

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

Lithophyllum proboscideum (Foslie) Foslie

Former name: Lithothamnium
Current name: Lithothamnion

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Microcladia coulteri Harvey

*Minium parvum Moe

Murrayellopsis dawsonii E. Post

Myriogramme caespitosa E.Y. Dawson

Myriogramme repens G.J. Hollenberg

Myriogramme spectabilis (Eaton) Kylin

Myriogramme variegata Yamada

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

*Neevea repens Batters

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

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

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

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

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

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

*Palmaria hecatensis M.J. Hawkes

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

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

Petroglossum pacificum G.J. Hollenberg

Petroglossum parvum G.J. Hollenberg

Former name: Peyssonellia
Current name: Peyssonnelia

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

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

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

*Peyssonnelia pacifica Kylin

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

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

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

Phycodrys profunda E.Y. Dawson

Phycodrys setchellii Skottsberg

Pikea californica Harvey

*Pikea pinnata Setchell

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

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

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

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

Pleonosporium squarrosum Kylin

Pleonosporium squarrulosum (Harvey) I.A. Abbott

Pleonosporium vancouverianum (J. Agardh) J. Agardh

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

Former name: Plocamium cartilagineum (Linnaeus) P.S. Dixon
Current name: Plocamium pacificum Kylin

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

Pollexfenia anacapensis E.Y. Dawson & Neushul

Polyneura latissima (Harvey) Kylin

Polyneurella hancockii E.Y. Dawson

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

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

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

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

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

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

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

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

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

Former name: Porphyra miniata (C. Agardh) C. Agardh
Current name: Wildemania amplissima (Kjellman) Foslie

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

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

Former name: Porphyra occidentalis Setchell & Hus
Current name: Wildemania occidentalis (Setchell & Hus) S.C. Lindstrom

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

Porphyra pulchra G.J. Hollenberg

*Porphyra purpurea (Roth) C. Agardh

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

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

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

Porphyrella californica G.J. Hollenberg

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

Prionitis australis (J. Agardh) J. Agardh

Former name: Prionitis cornea (Okamura) E.Y. Dawson
Current name: not in California

Prionitis filiformis Kylin

Prionitis lanceolata (Harvey) Harvey

Prionitis linearis Kylin

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

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

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

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

Former name: Pseudoscinaia snyderiae Setchell
Current name: Scinaia snyderae (Setchell) J.M. Huisman

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

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

Pterocladia media E.Y. Dawson

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

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

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

*Pyropia kanakaensis (Mumford) S.C. Lindstrom

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

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

Reticulobotrys catalinae E.Y. Dawson

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

Rhodochorton purpureum (Lightfoot) Rosenvinge

Rhododiscus carmelita G.J. Hollenberg & I.A. Abbott

Former name: Rhodoglossum affine (Harvey) Kylin
Current name: Mazzaella affinis (Harvey) S. Fredericq

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

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

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

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

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

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

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

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

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

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

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

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

*Schizymenia dubyi (Chauvin ex Duby) J. Agardh

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

Sciadophycus stellatus E.Y. Dawson

Scinaia articulata Setchell

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

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

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

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

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

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

Weeksia digitata I.A. Abbott

Weeksia howellii Setchell & N.L. Gardner

Weeksia reticulata Setchell

Weeksia templetonii Setchell & N.L. Gardner

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

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