This list contains all of the scientific names mentioned in this guide, including names of non-seaweeds. Where a seaweed has undergone a recent name change or there is a conflict as to which is the proper name, we have listed both the new and old names (e.g., Aegagropila was Cladophora) so that the reader can recognize organisms described in the older literature. When the full species name or binomial is used, the author in parentheses first described the species and the author named next is responsible for the species’ present taxonomic position. For example, “Acrosiphonia arcta (Dillwyn) Gain” tells us that the green rope A. arcta was first described by Dillwyn and later placed in its present taxonomic position by Gain. This information is crucial for tracking species from their original description to present status. It is also useful in clarifying situations where the binomial has been misused.
Acrosiphonia arcta (Dillwyn) Gain
Acrosiphonia coalita (Ruprecht) Scagel, Garbary, Golden & M.W. Hawkes
Acrosiphonia duriuscula (Ruprecht) Yendo
Aegagropila linnaei Kützing (formerly Cladophora aegagropila)
Ahnfeltia fastigiata (Postels & Ruprecht) Makiendo
Ahnfeltiopsis leptophylla (J.G. Agardh) P.C. Silva & T.C. DeCew
Ahnfeltiopsis linearis (C. Agardh) P.C. Silva & T.C. DeCew
Alaria marginata Postels & Ruprecht
Analipus japonicus (Harvey) Wynne
Anthopleura (sea anemone)
Antithamnionella pacifica (Harvey) E.M. Wollaston
Antithamnionella spirographidis (Schiffner) E.M. Wollaston
Asterocolax gardneri (Setchell) Feldmann & G. Feldmann
Aureophycus aleuticus H.Kawai, T.Hanyuda, Lindeberg & S.C.Lindstrom
Bangia sensu Lyngbye
Battersia plumigera (Holmes ex Hauck) Draisma, Prud'homme & H. Kawai
Battersia racemosa (Greville) Draisma, Prud'homme & H.Kawai [formerly Sphacelaria]
Bossiella californica (Decaisne) P.C. Silva
Bossiella chiloensis (Decaisne) H.W. Johansen
Bossiella dichotoma (Manza) P.C. Silva
Bossiella orbigniana (Decaisne) P.C. Silva
Bossiella frondescens (Postels & Ruprecht) E.Y.Dawson [formerly Corallina frondescens]
Bossiella plumosa (Manza) P.C. Silva
Bryopsis corticulans Setchell
Bryopsis hypnoides J.V. Lamouroux
Bryopsis plumosa (Hudson) C. Agardh
Cakile edentula (Bigelow) Hooker
Calliarthron tuberculosum (Postels & Ruprecht) E.Y. Dawson
Calliarthron cheilosporioides Manza
Callithamnion acutum Kylin
Callithamnion biseriatum Kylin
Callithamnion bisporum N.L. Gardner
Callithamnion pikeanum Harvey
Callithamnion rupicola C.L. Anderson
Callophyllis crenulata Setchell
Callophyllis edentata Kylin
Callophyllis flabellulata Harvey
Callophyllis heanophylla Setchell
Callophyllis schneideri Clarkston & G.W. Saunders
Ceramium californicum J.G. Agardh
Ceramium codicola J.G. Agardh
Ceramium pacificum (Collins) Kylin
Chaetomorpha Kützing
‘Chlorochytrium’ sensu Cohn
Chondracanthus canaliculatus (Harvey) Guiry
Chondracanthus corymbiferus (Kützing) Guiry
Chondracanthus exasperatus (Harvey & Bailey) Hughey
Chondrus
Cladophora aegagropila (Linnaeus) Rabenhorst
‘Codiolum’ sensu A. Braun
Codium fragile (Suringar) Hariot
Codium ritteri Setchell & N.L. Gardner
Codium setchellii N.L. Gardner
Coilodesme bulligera Strömfelt
Coilodesme californica (Ruprecht) Kjellman
Coilodesme plana Hollenberg & I.A. Abbott
‘Colpomenia bullosa’ sensu (D.A.Saunders) Yamada
‘Colpomenia peregrina’ sensu (Sauvageau) Hamel
Constantinea rosa-marina (Gmelin) Postels & Ruprecht
Constantinea simplex Setchell
Constantinea subulifera Setchell
Corallina caespitosa R.H. Walker, J.Brodie & L.M. Irvine
Corallina officinalis var. chilensis (Decaisne) Kützing
Corallina vancouveriensis Yendo
Costaria costata (C.A. Agardh) Saunders
Cruoria profunda E.Y. Dawson
Cryptochiton stelleri Middendorf
Cryptopleura ruprechtiana (J. Agardh) Kylin
Cryptosiphonia woodii (J.G. Agardh) J.G. Agardh
Cumagloia andersonii (Farlow) Setchell
Cumathamnion decipiens (J.G. Agardh) M.J. Wynne & G.W. Saunders [formerly Delesseria decipiens]
Cymathaere triplicata (Postels & Ruprecht) J.G. Agardh
Derbesia marina (Lyngbye) Solier
Desmarestia aculeata (Linnaeus) J.V. Lamouroux
Desmarestia dudresnayi subspecies foliaceae (V.A.Pease) A.F.Peters, E.C.Yang, F.C. Küpper & Prud'Homme van Reine [formerly D. foliacea]
Desmarestia herbacea (Turner) J.V. Lamouroux [formerly (formerly D. munda]
Desmarestia kurilensis Yamada
Desmarestia ligulata (Lightfoot) Lamouroux
Desmarestia viridis (O.F. Müller) J.V. Lamouroux
Dictyoneurum californicum Ruprecht
Dictyoneurum reticulatum (De A. Saunders) P.C. Silva [formerly Dictyoneuropsis reticulata]
Dictyota binghamiae J.G. Agardh
Dictyota coriacea (Holmes) I.K.Wang, H.-S.Kim & W.J.Lee [formerly Pachydictyon coriaceum]
Ecklonia arborea (Areschoug) M.D.Rothman, Mattio & J.J.Bolton [formerly Eisenia arborea]
Ectocarpus commensalis Setchell & N.L. Gardner
Ectocarpus fasciculatus Harvey
Ectocarpus siliculosus (Dillwyn) Lyngbye
Egregia menziesii (Turner) Areschoug
Elachista fucicola (Velley) Areschoug [contains the now defunct E. lubrica]
Elliptochloris marina Letsch
Endocladia muricata (Postels & Ruprecht) J.G. Agardh
Erythrophyllum delesserioides J.G. Agardh
Erythrophyllum splendens Doty
Eualaria fistulosa (Postels & Ruprecht) M.J.Wynne [formerly Alaria fistulosa and Druehlia fistulosa]
Fragaria chiloensis (Linnaeus) Miller
Fredericqia decewii C.A. Maggs, L. Le Gall, F. Mineur, J. Provan & G.W. Saunders [formerly Ahnfeltiopsis gigartinoides]
Fucus distichus Linnaeus [formerly F. gardneri]
Fucus spiralis Linnaeus
Gelidium coulteri Harvey
Gelidium purpurascens N.L. Gardner
Gigartina
Glehnia littoralis subspecies leiocarpa (Mathias) Hultén
Gloiopeltis furcata (Postels & Ruprecht) J.G. Agardh
Gonimophyllum Batters
Gracilaria pacifica Abbott
Gracilaria robusta Setchell
Gracilaria vermiculophylla (Ohmi) Papenfuss
Gracilariophila Setchell & H.L. Wilson
Gracilariopsis andersonii (Grunow) E.Y. Dawson
Halosaccion glandiforme (Gmelin) Ruprecht
Hapterophycus Setchell & N.L. Gardner
Harveyella mirabilis F.Schmitz & Reinke
Hesperophycus californicus P.C. Silva [formerly H. harveyanus]
Hildenbrandia occidentalis Setchell
Hildenbrandia rubra (Sommerfelt) Meneghini
Hymenena flabelligera (J. Agardh) Kylin
Hymenena multiloba (J. Agardh) Kylin
Iridaea
Janczewskia Solms-Laubach
Johansenia macmillanii K.R. Hind & G.W. Saunders
Johnson-sea-linkia profunda Eiseman & S.A. Earle
Kornmannia leptoderma (Kjellman) Bliding
Lathyrus japonicus var. maritimus (Linnaeus) Kartesz & Gandhi
Laminaria ephemera Setchell
Laminaria farlowii Setchell
Laminaria longipes Bory
Laminaria setchellii P.C. Silva
Laminaria sinclairii (Harvey ex J.D. Hooker & Harvey) Farlow, Anderson & Eaton
Laminaria yezoensis Miyabe
Laurencia
Leachiella pacifica Kugrens
Leathesia marina (Lyngbye) Decaisne [formerly L. difformis]
Lessoniopsis littoralis (Tilden) Reinke
Macrocystis pyrifera (Linnaeus) C.A. Agardh [formerly M. integrifolia and M. angustifolia]
Mastocarpus alaskensis S.C. Lindstrom, Hughey & Martone
Mastocarpus jardinii (J.G. Agardh) J.A. West
Mastocarpus intermedius S.C. Lindstrom, Hughey & Martone
Mastocarpus pachenicus L. Le Gall & G.W. Saunders
Mastocarpus papillatus (C.A. Agardh) Kutzing
Mastocarpus vancouveriensis S.C. Lindstrom, Hughey & Martone
Mazzaella affinis (Harvey) S. Fredericq
Mazzaella dewreedei G.W. Saunders K.R. Millar
Mazzaella japonica [Mikami] Hommersand
Mazzaella linearis (Setchell & Gardner) Fredericq
Mazzaella parksii (Setchell & N.L. Gardner) J.R. Hughey, P.C. Silva & M.H. Hommersand ]formerly known as M. cornucopiae]
Mazzaella splendens (Setchell & Gardner) Fredericq
Melanosiphon intestinalis (De A. Saunders) M.J. Wynne [formerly Myelophycus intestinalis]
Melobesia marginata Setchell & Foslie
Melobesia mediocris (Foslie) Setchell & L.R. Mason
Mesophyllum conchatum (Setchell & Foslie) W.H. Adey
Mesophyllum crassiusculum (Foslie) Lebednik
Mesophyllum lamellatum (Setchell & Foslie) W.H. Adey
Mesophyllum vancouveriense (Foslie) Steneck & R.T. Paine
Microcladia borealis Ruprecht
Microcladia coulteri Harvey
Monostroma Thuret
Myelophycus intestinalis De A. Saunders
Nemalion vermiculare Suringar [formerly N. helminthoides]
Neogastroclonium subarticulatum (Turner) L.Le Gall, Dalen & G.W.Saunders [formerly Gastroclonium subarticulatum]
Neorhodomela aculeata (Perestenko) Masuda
Neorhodomela larix (Turner) Masuda
Neorhodomela oregona (Doty) Masuda
Nereocystis luetkeana (Mertens) Postels & Ruprecht
Odonthalia floccosa (Esper) Falkenberg
Odonthalia kamtschatica (Ruprecht) J.G. Agardh
Odonthalia lyallii (Harvey) J.G. Agardh
Odonthalia setacea (Ruprecht) Perestenko
Odonthalia washingtoniensis Kylin
Opuntia Miller (a cactus)
Opuntiella californica (Farlow) Kylin
Osmunda Linnaeus (a fern)
Osmundea spectabilis (Postels & Ruprecht) Nam [formerly Laurencia]
Palmaria callophylloides M.W. Hawkes & Scagel
Palmaria hecatensis M.W. Hawkes
Palmaria mollis (Setchell & N.L. Gardner) van der Meer & C.J. Bird
Pelvetiopsis limitata (Setchell) N.L. Gardner
Petalonia fascia (O.F. Müller) Kuntze
Phaeostrophion irregulare Setchell & N.L. Gardner
Phyllospadix scouleri W.J. Hooker
Phyllospadix serrulatus Ruprecht ex Ascherson
Phyllospadix torreyi S. Watson
Pleurophycus gardneri Setchell & Saunders ex Tilden
Plocamiocolax pulvinata Setchell
Plocamium oregonum Doty
Plocamium pacificum Kylin
Plocamium violaceum Farlow
Polyneura latissima (Harvey) Kylin
Polysiphonia hendryi N.L. Gardner
Polysiphonia pacifica Hollenberg
Porphyra C. Agardh
Postelsia palmaeformis Ruprecht
Prasiola borealis M. Reed
Prasiola crispa (Lightfoot) Kützing
Prasiola delicata Setchell & N.L. Gardner
Prasiola linearis C.-C. Jao
Prasiola meridonalis Setchell & Gardner
Prionitis lanceolata (Harvey) Harvey
Prionitis sternbergii (C. Agardh) J.G. Agardh [formerly P. lyallii]
Pseudolithophyllum muricatum (Foslie) Steneck & R.T. Paine
Pterosiphonia baileyi (Harvey) Falkenberg
Pterosiphonia dendroidea (Montagne) Falkenberg
Pterygophora californica Ruprecht
Punctaria Greville
Pylaiella littoralis (Linnaeus)
Pyropia C. Agardh
Pyropia yezoensis (Ueda) M.S.Hwang & H.G.Choi
Ralfsia ‘californica’ sensu Setchell & N.L. Gardner
Ralfsia confusa Hollenberg
Ralfsia fungiformis (Gunnerus) Setchell & N.L. Gardner
Ralfsia hesperia Setchell & N.L. Gardner
Ralfsia pacifica Hollenberg
Rhizoclonium lubricum Setchell & N.L. Gardner) [formerly Lola lubrica]
Rhodymenia californica Kylin
Rhodymenia pacifica Kylin
Rhodymeniocolax Setchell
Saccharina dentigera (Kjellman) C.E.Lane, C.Mayes, Druehl & G.W.Saunders [formerly Laminaria dentigera]
Saccharina druehlii G.W.Saunders & D.C.McDevit
Saccharina groenlandica (Rosenvinge) C.E.Lane, C.Mayes, Druehl & G.W.Saunders [formerly Laminaria groenlandica]
Saccharina latissima (Linnaeus) C.E.Lane, C.Mayes, Druehl & G.W.Saunders [formerly Laminaria saccharina]
Saccharina sessilis (C.Agardh) Kuntze [formerly Hedophyllum sessile]
Sarcocornia pacifica (Standley) A.J.Scott [formerly Salicornia]
Sargassum muticum (Yendo) Fensholt
Saundersella simplex (De A. Saunders) Kylin
Schizymenia dubyi (Chauvin ex Duby) J. Agardh
Schizymenia pacifica (Kylin) Kylin
Scytosiphon canaliculatus (Setchell & N.L.Gardner) Kogame
Scytosiphon dotyi M.J. Wynne
Scytosiphon lomentaria (Lyngbye) Link [formerly S. simplicissimus]
Silvetia compressa (J. Agardh) Serrão, Cho, Boo, et Brawley [formerly Pelvetia]
Smithora naiadium (Anderson) Hollenberg
Soranthera ulvoidea Postels & Ruprecht
Sphacelaria didichotoma De Saunders
Sphacelaria rigidula Kützing
Spongites tumidum (Foslie) K.A. Miller, P.W. Gabrielson, Miklasz, E. van der Merwe & Maneveldt [formerly Pseudolithophyllum neofarlowii]
Stephanocystis geminata (C.Agardh) Draisma, Ballesteros, F.Rousseau & T.Thibaut [formerly Cystoseira geminata]
Stephanocystis osmundacea (Turner) Trevisan [formerly Cystoseira osmundacea]
Tetraselmis ascus Butcher
Tetraselmis marina (Cienkowski) R.E.Norris, Hori & Chihara
Ulva californica Wille
Ulva compressa Linnaeus [formerly Enteromorpha compressa]
Ulva intestinalis Linnaeus [formerly Enteromorpha intestinalis]
Ulva “lactuca” Linnaeus [formerly U. fenestrata]
Ulva linza Linnaeus [formerly Enteromorpha linza]
Ulva lobata (Kützing) Harvey
Ulva rigida C. Agardh [formerly U. fenestrata]
Ulva stenophylla Setchell & N.L.Gardner
Ulva taeniata (Setchell) Setchell & N.L.Gardner
Ulvaria obscura (Kützing) Gayral ex Bliding
Ulvaria splendens (Ruprecht) K.L. Vinogradova
Undaria pinnatifida (Harvey) Suringar
Urospora doliifera (Setchell & N.L.Gardner) Doty
Urospora neglecta (Kornmann) Lokhorst & Trask
Urospora penicilliformis (Roth) Areschoug
Urospora wormskioldii (Mertens ex Hornemann) Rosenvinge
Zostera japonica Ascherson & Graebner
Zostera marina Linnaeus