University Herbarium, University of California, Berkeley
Center for Phycological Documentation
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Saccharina angustata (Kjellman) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina cichorioides (Miyabe) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina coriacea (Miyabe) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina crassifolia (Postels & Ruprecht) Kuntze
Saccharina crassifolia (Miyabe) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina dentigera (Kjellman) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina diabolica (Miyabe) 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
Saccharina gyrata (Kjellman) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina japonica (J.E. Areschoug) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina kurilensis C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina latissima (Linnaeus) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina longipedalis (Okamura) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina longissima (Miyabe) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina ochotensis (Miyabe) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina religiosa (Miyabe) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina sculpera C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccharina yendoana (Miyabe) C.E. Lane, C. Mayes, L.D. Druehl, & G.W. Saunders
Saccochrysis colligera Skuja ex T. Willén
Saccochrysis rotundata Skuja ex T. Willén
Saccorhiza bulbosa J. Agardh
SACCOSTOMA T. Cavalier-Smith
SAGENISTA T. Cavalier-Smith
SAHARIFUSA E.D. Pöthe de Baldis
Saharifusa arenacea (E.D. Pöthe de Baldis) E.D. Pöthe de Baldis
Saharifusa cucurbita (S. Jardiné et al.) E.D. Pöthe de Baldis
Saharifusa rochesterensis (F.H. Cramer) E.D. Pöthe de Baldis
Saharifusa saudiarabiae (F.H. Cramer & M. del C.R. Diez) E.D. Pöthe de Baldis
Saharifusa striatogranulata (S. Jardiné et al.) E.D. Pöthe de Baldis
SAHLINGIA P. Kornmann
Sahlingia subintegra (Rosenvinge) P. Kornmann
SAITOA G. Furnari & D. Serio
SALMACISELLA Gaillon
Salpingoeca ampullacea D. de C. Bicudo & C.E. de M. Bicudo
Salpingoeca ampulloides D. de C. Bicudo & C.E. de M. Bicudo
SANGIRELLUM A.K. Mahato & P. Mahato
Sangirellum taeniforme A.K. Mahato & P. Mahato
SARCINOCHLAMYS S. Watanabe
Sarcinochlamys stigmatica S. Watanabe
SARCINOCHRYSIDOPHYCEAE C. van den Hoek, D.G. Mann, & H.M. Jahns
Sarcinochrysis marina var. filamentosa C. Billard
Sarcodia dentata (Suhr) R.E. Norris
SARCOMASTIGOTA T. Cavalier-Smith
SARCOMENIA Sonder
Sarcomenia delesserioides Sonder
Sarcomenia sandersonii Harvey ex J. Agardh
SARCOMENIACEAE H.B.S. Womersley
SARCOMENIEAE J. Agardh
SARCOMENIOIDEAE De Toni
SARCONEMIEAE Schmitz & Hauptfleisch
Sarcothalia atropurpurea (J. Agardh) M.H. Hommersand
Sarcothalia circumcincta (J. Agardh) M.H. Hommersand
Sarcothalia convoluta (J. Areschoug ex J. Agardh) M.H. Hommersand
Sarcothalia crassifolia (C. Agardh) Edyvane & Womersley
Sarcothalia crispata (Bory de Saint-Vincent) G.L. Leister
Sarcothalia decipiens (J.D. Hooker & Harvey) M.H. Hommersand
Sarcothalia dichotoma (Setchell & Gardner) G.L. Leister
Sarcothalia insidiosa (J. Agardh) Edyvane & Womersley
Sarcothalia lanceata (J. Agardh) M.H. Hommersand
Sarcothalia lapathifolia (Kützing) G.L. Leister
Sarcothalia livida (Turner) M.H. Hommersand
Sarcothalia marginifera (J. Agardh) M.H. Hommersand
Sarcothalia papillosa (Bory de Saint-Vincent) G.L. Leister
Sarcothalia radula (Esper) Edyvane & Womersley
Sarcothalia scutellata (Hering) G.L. Leister
Sarcothalia stiriata (Turner) G.L. Leister
Sarfatiella sarda (G. Pecorini) A. Cherchi & R. Schroeder
SARGASSOPSIS M. Nizamuddin, S. Hiscock, L. Barratt, & R.F.G. Ormond
SARGASSOPSIS M. Nizamuddin, S. Hiscock, L. Barratt, & R.F.G. Ormond
Sargassopsis filiformis (Montagne) M. Nizamuddin, S. Hiscock, L. Barratt, & R.F.G. Ormond
Sargassopsis zanardinii (Schiffner) M. Nizamuddin, S. Hiscock, L. Barratt, & R.F.G. Ormond
Sargassopsis zanardinii (Schiffner) M. Nizamuddin, S. Hiscock, L. Barratt, & R.F.G. Ormond
SARGASSUM sect. ACANTHOCARPICAE subsect. BISERRULAE (J. Agardh) C.K. Tseng & B. Lu
SARGASSUM sect. ACANTHOCARPICAE subsect. GLOMERULATAE (J. Agardh) C.K. Tseng & B. Lu
SARGASSUM sect. ACANTHOCARPICAE subsect. GLOMERULATAE series BINDERIANA (Grunow) C.K. Tseng & B. Lu
SARGASSUM sect. ACANTHOCARPICAE subsect. GLOMERULATAE series PLATYCARPAE (Grunow) C.K. Tseng & B. Lu
SARGASSUM sect. HIZIKIA (Okamura) T. Yoshida
Sargassum abbottiae G.C. Trono
Sargassum albertisii Piccone
Sargassum angii L.M. Laio
Sargassum angustifolioides C.K. Tseng & Lu Baoren
Sargassum araii T. Yoshida
Sargassum balingasayense G.C. Trono
Sargassum bataanense G.C. Trono
Sargassum beihaiense C.K. Tseng & B. Lu
Sargassum biforme Sonder
Sargassum biserrulioides C.K. Tseng & Lu Baoren
Sargassum boreale T. Yoshida & T. Horiguchi
Sargassum boryanum A. Richard
Sargassum boryanum Montagne
Sargassum bulbiferum T. Yoshida
Sargassum camouii E.Y. Dawson
Sargassum capillare var. koenigii (Grunow) P.C. Silva
Sargassum capillare var. pseudocapillare (Grunow) P.C. Silva
Sargassum capillare var. tranquebarense (Grunow) P.C. Silva
Sargassum capitatum C.K. Tseng & Lu Baoren
Sargassum carpophyllum var. honomense H.D. Nguyen & Q.N. Huynh
Sargassum carpophyllum var. nhatrangense (Pham-Hoang Ho) T. Ajisaka
Sargassum cinctum var. lanceolatum Grunow
Sargassum congkinhii Pham-Hoang
Sargassum corderoi R.B. Modelo, I. Umezaki, & L.M. Liao
Sargassum coriifolium var. lanceolatum (Grunow) Grunow
Sargassum cornutifructum H.D. Nguyen & Q.N. Huynh
Sargassum cotoense Nguyen Huu Dai
Sargassum currimaoense G.C. Trono
Sargassum dazhouense C.K. Tseng & Lu Baoren
Sargassum denticarpum T. Ajisaka
Sargassum distichum Sonder
Sargassum dotyi G.C. Trono
Sargassum erumpens C.K. Tseng & B. Lu
Sargassum euryphyllum (Grunow) C.K. Tseng & Lu Baoren
Sargassum fallax Sonder
Sargassum feldmannii Pham-Hoang
Sargassum filiforme Montagne
Sargassum flaccidum Sonder
Sargassum fujianense C.K. Tseng & Lu Baoren
Sargassum fuliginosoides C.K. Tseng & B. Lu
Sargassum furcatum var. diversifolium (Grunow) E.J. de Paula ex Y. Yoneshigue
Sargassum furcatum var. humile (Grunow) E.J. de Paula ex Y. Yoneshigue
Sargassum fuscifolium C.K. Tseng & Lu Baoren
Sargassum gemmiphorum C.K. Tseng & B. Lu
Sargassum giganteifolium Yamada
Sargassum ilicifolioides C.K. Tseng & Lu Baoren
Sargassum ilicifolium var. euryphyllum (Grunow) Grunow
Sargassum integerrimum C.K. Tseng & Lu Baoren
Sargassum intermedium C.K. Tseng & B. Lu
Sargassum kashiwajimanum Yendo
Sargassum kendrickii N.A. Goldberg & J.M. Huisman
Sargassum kiushianum Yendo
Sargassum kjellmanianum f. muticum Yendo
Sargassum kushimotense Yendo
Sargassum lanceolatum Greville
Sargassum longicarpum C.K. Tseng & Lu Baoren
Sargassum lunense Caldesi
Sargassum mathiesonii J.A. Kilar
Sargassum megalocystum C.K. Tseng & Lu Baoren
Sargassum minimum C.K. Tseng & Lu Baoren
Sargassum miyabei var. okiense M. Kajimura
Sargassum namoense Nguyen Huu Dai
Sargassum nigrifolium Yendo
Sargassum nipponicum Yendo
Sargassum novae-hollandiae P.C. Silva
Sargassum novae-hollandiae var. subdistichum (Grunow) P.C. Silva
Sargassum odontocarpum var. lanceolatum (Grunow) P.C. Silva
Sargassum ohnoi G.C. Trono
Sargassum orotavicum T. Díaz-Villa, J. Afonso-Carrillo, & M. Sansón
Sargassum pacificum f. megaphyllum W.R. Taylor
Sargassum parvifolioides C.K. Tseng & Lu Baoren
Sargassum parvulum C.K. Tseng & Lu Baoren
Sargassum phamhoangii Nguyen Huu Dai
Sargassum piluliferum var. nhatrangense Pham-Hoang
Sargassum piluliferum var. nhatrangense Pham-Hoang Ho
Sargassum podacanthum Sonder
Sargassum primitivum C.K. Tseng & B. Lu
Sargassum pseudolanceolatum C.K. Tseng & Lu Baoren
Sargassum pusillum C.K. Tseng & B. Lu
Sargassum qingdaoense C.K. Tseng & B. Lu
Sargassum qionghaiense C.K. Tseng & B. Lu
Sargassum quinhonense Nguyen Huu Dai
Sargassum rhizophorum C.K. Tseng & Lu Baoren
Sargassum robustum J. Agardh
Sargassum sagamianum Yendo
Sargassum samarense G.C. Trono
Sargassum sanyaense C.K. Tseng & Lu Baoren
SARGASSUM series CORIIFOLIA C.K. Tseng & Lu Baoren
SARGASSUM series ILICIFOLIA C.K. Tseng & Lu Baoren
SARGASSUM series PARVIFOLIA C.K. Tseng & Lu Baoren
SARGASSUM series PLAGIOPHYLLAE C.K. Tseng & Lu Baoren
Sargassum serratum Nguyen Huu Dai
Sargassum shandongense C.K. Tseng, Z.F. Zhang, & B. Lu
Sargassum shandongense f. lineare C.K. Tseng, Z.F. Zhang, & B. Lu
Sargassum siliculosoides C.K. Tseng & Lu Baoren
Sargassum silvae C.K. Tseng & B. Lu
Sargassum sinicola var. camouii (E.Y. Dawson) J.N. Norris & N.P. Yensen
Sargassum spinuligerum Sonder
Sargassum stenophyllum J. Agardh
Sargassum stenophyllum var. subdistichum Grunow
Sargassum stolonifolium S.-M. Phang & T. Yoshida
Sargassum subalatum Sonder
Sargassum subdroserifolium C.K. Tseng & Lu Baoren
Sargassum subrepandum var. euryphyllum Grunow
Sargassum sullivanii G.C. Trono
Sargassum symphyorhizoideum C.K. Tseng & Lu Baoren
Sargassum taiwanicum C.K. Tseng & B. Lu
Sargassum tenue var. koenigii Grunow
Sargassum tenue var. pseudocapillare Grunow
Sargassum tenue f. tranquebarense Grunow
Sargassum tenuifolioides C.K. Tseng & Lu Baoren
Sargassum thivyae V. Krishnamurthy & R. Ezhili
Sargassum thunbergii f. latifolium Yendo
Sargassum thunbergii f. nipponicum Yendo
Sargassum tosaense Yendo
Sargassum tristichum Sonder
Sargassum umezakii G.C. Trono
Sargassum varians Sonder
Sargassum velasquezii G.C. Trono
Sargassum vigorosum P.C. Silva
Sargassum vulgare f. diversifolium Grunow
Sargassum vulgare f. humile Grunow
Sargassum wakayamaense T. Yoshida
Sargassum weizhouense C.K. Tseng & Lu Baoren
Sargassum wenchangense C.K. Tseng & B. Lu
Sargassum yamadae G.C. Trono
Sargassum yinggehaiense C.K. Tseng & Lu Baoren
Sargassum yongxingense C.K. Tseng & Lu Baoren
Sargassum yoshidae G.C. Trono
Sargassum zanardinii Schiffner
Sauvageaugloia divaricata (Clemente) J. Cremades
SAWAMURAIA S. Komura
Sawamuraia biseriata S. Komura
Sawamuraia multibullata S. Komura
Sawamuraia quadriseriata S. Komura
Scagelia americana (Harvey) A. Athanasiadis
Scagelia pusilla (Ruprecht) A. Athanasiadis
Scagelia pylaisaei f. corallina (Nägeli) L.P. Perestenko
Scagelia pylaisaei var. corallina (Nägeli) A. Athanasiadis
Scagelia pylaisaei f. subnuda (Ruprecht) L.P. Perestenko
Scagelia simulans (N.L. Gardner) M. Cormaci & G. Furnari
SCAGELIEAE A. Athanasiadis
Scageliopsis strongylekystis A. Athanasiadis
SCAGELOTHAMNIEAE A. Athanasiadis
SCAGELOTHAMNION A. Athanasiadis
Scagelothamnion pusillum (Ruprecht) A. Athanasiadis
Scagelothamnion pusillum var. droebakense (Sundene) A. Athanasiadis
SCALPRUM L. Agassiz
SCALPTRUM Corda
Scalptrum striatum Corda
Scampanella asymmetrica K. Perch-Nielsen
Scampanella bispinosa K. Perch-Nielsen
Scampanella cornuta S. Forchheimer & H. Stradner
Scampanella magnifica K. Perch-Nielsen
Scampanella wisei K. Perch-Nielsen
Scemedesmus ellipticus (W. West & G.S. West) Chodat
SCENEDESMACEAE subfam. DESMODESMOIDEAE E. Hegewald & N. Hanagata
SCENEDESMUS subg. DESMODESMUS R. Chodat
Scenedesmus abundans var. peruvianus (E. Hegewald) E. Hegewald
Scenedesmus acuminatus f. contortus L. Krienitz
Scenedesmus acuminatus f. globosus T. Hortobágyi
Scenedesmus acuminatus f. procerus T. Hortobágyi
Scenedesmus acutiformis B. Schröder
Scenedesmus acutiformis var. bicaudatus Guglielmetti
Scenedesmus acutiformis var. tricostatus R. Chodat
Scenedesmus alternans var. apiculatus W. West & G.S. West
Scenedesmus alternans var. prescottii B. Fott & J. Komárek
Scenedesmus ambuehlii F. Hindák
Scenedesmus anhuiensis S.S. Wang
Scenedesmus apiculatus (W. West & G.S. West) Chodat
Scenedesmus arcuatus f. gracilis T. Hortobágyi
Scenedesmus arcuatus var. gracilis (T. Hortobágyi) F. Hindák
Scenedesmus arcuatus f. prescottii (B. Fott & J. Komárek) H. Kuosa
Scenedesmus armatus var. longispina (R. Chodat) E. Hegewald & F. Hindák
Scenedesmus armatus var. microspinosus (T. Hortobágyi) E. Hegewald & F. Hindák
Scenedesmus armatus var. pluricostatus P. Bourrelly
Scenedesmus armatus var. spinosus Fritsch & Rich
Scenedesmus armatus var. subalternans G.M. Smith
Scenedesmus arthrodesmiformis Schröder
Scenedesmus bajacalifornicus L.A. Lewis & V.R. Flechtner
Scenedesmus bicellularis R. Chodat
Scenedesmus bijuga var. disciformis (Chodat) C.R. Leite
Scenedesmus bijugatus var. disciformis Chodat
Scenedesmus bijugatus f. disciformis (Chodat) Volk
Scenedesmus bijugatus f. major Isabella & R.J. Patel
Scenedesmus brasiliensis Bohlin
Scenedesmus brasiliensis f. granulatus Isabella & R.J. Patel
Scenedesmus brasiliensis var. quadrangularis (Corda) Borge
Scenedesmus brasiliensis var. serrato-perforatus (R.J. Patel & P.K. Isabella George) E. Hegewald & F. Hindák
Scenedesmus carinatus f. brevicaudatus Uherkovich
Scenedesmus caudatus Corda
Scenedesmus caudatus f. abundans Kirchner
Scenedesmus communis E. Hegewald
Scenedesmus costato-granulatus Skuja
Scenedesmus costato-granulatus var. elegans (T. Hortobágyi) E. Hegewald & L. Krienitz
Scenedesmus cuneatus A.P. Skabichevskij
Scenedesmus curvatocornis Proshkina-Lavrenko
Scenedesmus denticulatus Lagerheim
Scenedesmus denticulatus f. carinatus P. Mosto
Scenedesmus denticulatus var. linearis Hansgirg
Scenedesmus denticulatus var. lunatus W. West & G.S. West
Scenedesmus deserticola L.A. Lewis & V.R. Flechtner
Scenedesmus dimorphus f. granulatus Isabella & R.J. Patel
Scenedesmus dispar Brébisson
Scenedesmus dispar f. denticulatus Uherkovich
Scenedesmus dispar f. elegans Uherkovich
Scenedesmus dispar var. rabae Uherkovich
Scenedesmus dispar var. robustus Uherkovich
Scenedesmus dispar f. semidenticulatus Uherkovich
Scenedesmus dissociatus (P.A. Verses & F.R. Trainor) E. Hegewald & N. Hanagata
Scenedesmus distentus (T. Holtmann) E. Hegewald & N. Hanagata
Scenedesmus ellipticus Corda
Scenedesmus fenestratus Teiling
Scenedesmus flavescens R. Chodat
Scenedesmus flavescens var. breviaculeatus (P. Bourrelly) E. Hegewald
Scenedesmus flavescens var. longicaudatus E. Hegewald
Scenedesmus fuscus var. peruvianus E. Hegewald
Scenedesmus granulatus f. elegans T. Hortobágyi
Scenedesmus gujaratensis Isabella & R.J. Patel
Scenedesmus hanleyi R.F. Fleming
Scenedesmus heimii var. longispina P. Mosto
Scenedesmus hindakii E. Hegewald & N. Hanagata
Scenedesmus hirsutus F. Hindák
Scenedesmus huangshanensis S.S. Wang
Scenedesmus hystrix Lagerheim
Scenedesmus hystrix var. armatus R. Chodat
Scenedesmus intermedius R. Chodat
Scenedesmus intermedius var. acutispinus (Roll) E. Hegewald & S.S. An
Scenedesmus intermedius var. inflatus (Svirenko) E. Hegewald & S.S. An
Scenedesmus kantonensis F. Hindák
Scenedesmus kissii T. Hortobágyi
Scenedesmus komarekii E. Hegewald
Scenedesmus komarekii var. hirsutus (F. Hindák) E. Hegewald & F. Hindák
Scenedesmus lefevrei Deflandre
Scenedesmus lefevrei var. muzzanensis Huber-Pestalozzi
Scenedesmus longispina R. Chodat
Scenedesmus longus f. bidigitatus Isabella & R.J. Patel
Scenedesmus maximus var. peruviensis E. Hegewald
Scenedesmus multiformis E. Hegewald & F. Hindák
Scenedesmus multistriatus (H. Trenkwalder) N. Hanagata
Scenedesmus obtusus var. cornutus Franzé
Scenedesmus obtusus var. graevenitzii (Bernard) H. Kuosa
Scenedesmus oocystiformis (J.W.G. Lund) N. Hanagata
Scenedesmus opoliensis P. Richter
Scenedesmus opoliensis var. alatus N. Dedusenko-Shchegoleva
Scenedesmus opoliensis var. carinatus Lemmermann
Scenedesmus opoliensis var. mononensis R. Chodat
Scenedesmus pannonicus T. Hortobágyi
Scenedesmus pecsensis f. denticulatus Uherkovich
Scenedesmus pecsensis var. setosus Uherkovich
Scenedesmus pectinatus var. distentus T. Holtmann
Scenedesmus perforatus Lemmermann
Scenedesmus perforatus f. bicaudatus P. Compère
Scenedesmus perforatus var. spinosus G. Tell
Scenedesmus pleiomorphus F. Hindák
Scenedesmus polyspinosus T. Hortobágyi
Scenedesmus prismaticus var. spinosus S.S. Wang
Scenedesmus protuberans Fritsch & Rich
Scenedesmus pseudobernardii f. globosus L. Krienitz
Scenedesmus pseudobernardii f. procerus (T. Hortobágyi) L. Krienitz
Scenedesmus pseudodenticulatus E. Hegewald
Scenedesmus pyrus Corda
Scenedesmus quadrialatus S.S. Wang
Scenedesmus quadricauda var. acutispinus Roll
Scenedesmus quadricauda var. asymmetricus Schröder
Scenedesmus quadricauda f. bicaudatus Isabella & R.J. Patel
Scenedesmus quadricauda var. ellipticus W. West & G.S. West
Scenedesmus quadricauda var. inflatus Svirenko
Scenedesmus quadricauda var. insignis W. West & G.S. West
Scenedesmus quadricauda f. major Isabella & R.J. Patel
Scenedesmus quadricauda var. maximus W. West & G.S. West
Scenedesmus quadricauda var. rectangularis G.S. West
Scenedesmus quadricauda f. vidyanagarensis Isabella & R.J. Patel
Scenedesmus reginae (T. Holtmann) E. Hegewald & N. Hanagata
Scenedesmus rotundus L.A. Lewis & V.R. Flechtner
Scenedesmus schnepfii E. Hegewald & S.S. An
Scenedesmus senilis Corda
Scenedesmus serrato-perforatus R.J. Patel & P.K. Isabella George
Scenedesmus serratus (Corda) Bohlin
Scenedesmus smithii var. spinulosus S.S. Wang
Scenedesmus spinosus R. Chodat
Scenedesmus spinosus f. crassicaudatus T. Hortobágyi
Scenedesmus spinosus var. microspinosus T. Hortobágyi
Scenedesmus spinulatus K. Biswas
Scenedesmus subspicatus R. Chodat
Scenedesmus subspicatus var. crassicaudatus (T. Hortobágyi) F. Hindák
Scenedesmus tenuispina var. breviaculeatus P. Bourrelly
Scenedesmus terrestris (H. Reisigl) N. Hanagata
Scenedesmus tricostatus (R. Chodat) P. Mosto
Scenedesmus tropicus W.B. Crow
Scenedesmus tschudyi R.F. Fleming
Scenedesmus variabilis var. cornutus (Franzé) De Wildeman
Scenedesmus wisconsinensis var. reginae T. Holtmann
Scenedesmus wuhuensis S.S. Wang
Sceptroneis dimorpha N.I. Strelnikova
Sceptroneis facialis J. Fenner
Sceptroneis grunowii N.V. Anissimowa
Sceptroneis humuncia H.J. Schrader & J. Fenner
Sceptroneis humuncia var. tridens J. Fenner
Sceptroneis ligulata J. Fenner
Sceptroneis marina var. perminuta Grunow
Sceptroneis mayenica J. Fenner
Sceptroneis mutabilis Grunow
Sceptroneis ossiformis H.J. Schrader
Sceptroneis pesplanus J. Fenner & H.J. Schrader
Sceptroneis propinqua H.J. Schrader & J. Fenner
Sceptroneis pupa H.J. Schrader & J. Fenner
Sceptroneis talwanii H.J. Schrader & J. Fenner
Sceptroneis tenuis H.J. Schrader & J. Fenner
Sceptroneis vermiformis H.J. Schrader
Schimmelmannia venezuelensis D.L. Ballantine, M. García, S. Gomez, & M.J. Wynne
Schizochlamydella capsulata (R.R.L. Guillard, H.C. Bold, & F.J. MacEntee) S. Watanabe
Schizochlamydella minutissima P. Broady
Schizochlamydella sphaerica S. Watanabe
Schizochlamys planctonica Skuja
SCHIZOCHLORIS I. Kostikov, T. Darienko, A. Lukesová, & L. Hoffmann
Schizochloris diplococca (F. F. Hindák) I. Kostikov, T. Darienko, A. Lukesová, & L. Hoffmann
SCHIZOCHYTRIODINIUM M. Elbrächter
Schizochytriodinium calani M. Elbrächter
SCHIZOCLADIA E.C. Henry, K. Okuda, & H Kawai
Schizocladia ischiensis E.C. Henry, K. Okuda, & H Kawai
SCHIZOCLADIACEAE E.C. Henry, K. Okuda, & H Kawai
SCHIZOCLADIALES E.C. Henry, K. Okuda, & H Kawai
SCHIZOCLADIOPHYCEAE E.C. Henry, K. Okuda, & H Kawai
Schizocystia bicornuta S. Jardiné, A. Combaz, L. Magloire, G. Peniguel, & G. Vachey
Schizocystia saharica S. Jardiné, A. Combaz, L. Magloire, G. Peniguel, & G. Vachey
Schizoglossum gmelinii Kützing
Schizogonium crispatum Kützing
Schizogonium crispum Kützing
Schizogonium crispum (Lightfoot) F. Gay
Schizogonium julianum Meneghini
Schizogonium julianum Meneghini ex De Toni
Schizogonium laetevirens var. crispatum (Kützing) Reinbold
Schizogonium laetevirens var. crispum Kützing
Schizogonium nodosum Kützing
Schizogonium percursum (C. Agardh) Kützing
Schizogonium tortum (Mertens) Kützing
Schizogonium tortum var. percursum (C. Agardh) Rabenhorst
Schizonema adriaticum C. Agardh
Schizonema americanum Grunow
Schizonema americanum (Ehrenberg) Kuntze
Schizonema amplius (Kützing) Grunow
Schizonema antarcticum Harvey
Schizonema apiculatum (Greville) C. Agardh
Schizonema apiculatum var. fastigiatum (Kützing) Grunow
Schizonema apiculatum var. flavidulum Chauvin
Schizonema apiculatum var. genuinum Grunow
Schizonema apiculatum var. intermedium Grunow
Schizonema apiculatum var. minimum Grunow
Schizonema apiculatum var. minus Grunow
Schizonema apiculatum var. ramosissimum Grunow
Schizonema apiculatum var. scoticum (Grunow) Grunow
Schizonema apiculatum var. tenuissimum Grunow
Schizonema aureum (Kützing) Meneghini
Schizonema caspicum Grunow
Schizonema comoides var. antillarum Grunow
Schizonema corniculatum var. divaricatum Grunow
Schizonema corniculatum var. penicillatum Kützing ex Grunow
Schizonema corymbosum C. Agardh
Schizonema corymbosum var. japonicum Grunow
Schizonema damaecorne Harvey ex Grunow
Schizonema ehrenbergii Kuntze
Schizonema fastigiatum (Kützing) Rabenhorst
Schizonema gastrum (Ehrenberg) Kuntze
Schizonema grateloupii C. Agardh
Schizonema grevillei var. pumilum Grunow
Schizonema intermedium (Grunow) Grunow
Schizonema kobbense Kuntze
Schizonema lacustre C. Agardh
Schizonema lapidicola Grunow
Schizonema liebmannii Grunow
Schizonema medusinum var. comosum Grunow
Schizonema medusinum var. jadrense Grunow
Schizonema molle f. major Grunow
Schizonema molle f. media Grunow
Schizonema myxacanthum var. intermedium Grunow
Schizonema obtusum Greville
Schizonema parasiticum Griffiths ex Harvey
Schizonema parvulum Kuntze
Schizonema ramosissimum C. Agardh
Schizonema ramosissimum var. apiculatum Grunow
Schizonema ramosissimum var. aureum (Kützing) Grunow
Schizonema ramosissimum var. corymbosum Grunow
Schizonema ramosissimum var. flavidulum Grunow
Schizonema ramosissimum var. genuinum Grunow
Schizonema ramosissimum var. polyclados (Kützing) Grunow
Schizonema ramosissimum var. spinescens Grunow
Schizonema ramosissimum var. splendens Grunow
Schizonema ramosissimum var. subsetaceum Grunow
SCHIZONEMA [rankless] MICROMEGA (C. Agardh) Grunow
SCHIZONEMA [rankless] MONEMA (Greville) Grunow
SCHIZONEMA [rankless] RAMOSISSIMA Grunow
Schizonema rutilans var. amplius Kützing
Schizonema scoticum Grunow
Schizonema setaceum var. corymbosum Grunow
Schizonema setaceum var. genuinum Grunow
Schizonema setaceum var. pallens Grunow
Schizonema setaceum var. penicillatum Grunow
Schizonema setaceum var. polyclados (Kützing) Grunow
Schizonema setaceum var. ramosissimum Grunow
Schizonema setaceum var. tenellum Grunow
Schizonema setaceum var. virescens Grunow
Schizonema spicula (W.J. Hickie) Kuntze
Schizonema spinescens (Kützing) Meneghini
Schizonema splendens Meneghini
Schizonema tenellum var. rudolphianum Grunow
Schizonema tenue var. americanum (Grunow) Grunow
Schizonema thwaitesii Grunow
Schizonema titianum Grunow
Schizonema zanardinii var. lapidicola (Grunow) Grunow
Schizonema zanardinii var. lloydii Grunow
Schizonema zanardinii var. tommasinii Grunow
SCHIZOPHYCEAE Bennett & Murray
SCHIZOPHYTA R. Wettstein
SCHIZOSERIDEAE M.H. Hommersand & S. Fredericq
Schizoseris bombayensis (Børgesen) H.B.S. Womersley
Schizoseris hymenena (Zanardini) H.B.S. Womersley
Schizoseris perriniae (Lucas) H.B.S. Womersley
Schizoseris tasmanica S.-M. Lin & G.T. Kraft
Schizosiphon hirundinosus Cesati
Schizothrix gebeleinii S. Golubic & K.M. Browne
Schizothrix lenormandiana f. maior Starmach
Schizothrix luteola C. Sarthou, Y. Thérézien, & A. Couté
Schizothrix variecolor Rabenhorst
Schizymenia borealis I.A. Abbott
Schizymenia coccinea Harvey
Schizymenia dawsonii I.A. Abbott
SCHIZYMENIACEAE (Schmitz & Hauptfleisch) M. Masuda & M.D. Guiry
SCHIZYMENIEAE Schmitz & Hauptfleisch
SCHIZYMENIOIDEAE De Toni
SCHMITZIA Okamura
Schmitzia sanctae-crucis R.T. Wilce & J.R. Sears
Schottera angustifolia (Kützing) A.J.K. Millar
Schuettia cinnamomea (Greville) VanLandingham
SCHUETTIELLA E. Balech
Schuettiella mitra (Schütt) E. Balech
Sciadium arbuscula A. Braun ex Kützing
Sciadophycus expansus (Weber-van Bosse) A.J.K. Millar
Scinaia aborealis J.M. Huisman
Scinaia acuta M.J. Wynne
Scinaia australis (Sonder) Trevisan
Scinaia australis (Setchell) J.M. Huisman
Scinaia flabellata M. Kajimura
Scinaia forcellata subsp. scandinavica C.A. Maggs & M.D. Guiry
Scinaia furcata E. Zablackis
Scinaia furcellata subsp. scandinavica (C.A. Maggs & M.D. Guiry) A. Athanasiadis
Scinaia howensis J.M. Huisman
Scinaia huismanii P.S. Vroom, & I.A. Abbott
Scinaia interrupta (DC.) M.J. Wynne
Scinaia moniliformis var. pakistanensis S. Afaq-Husain & M. Shameel
Scinaia okiensis M. Kajimura
Scinaia proliferata J.M. Huisman
Scinaia pseudo-moniliformis M. Kajimura
Scinaia pseudocrispa (Clemente) M.J. Wynne
Scinaia pseudocrispa subsp. scandinavica (C.A. Maggs & M.D. Guiry) M.J. Wynne
Scinaia saifullahii S. Afaq-Husain & M. Shameel
Scinaia saifullahii S. Afaq-Husain & M. Shameel
Scinaia shameelii S. Afaq-Husain
Scinaia tokidae M. Kajimura
SCINAIACEAE J.M. Huisman, J.T. Harper, & G.W. Saunders
SCINAIOIDEAE De Toni
SCIUROTHAMNION O. De Clerck & G.T. Kraft
Sciurothamnion stegengae O. De Clerck & G.T. Kraft
SCIVIAMONAS F. Ekelund & D.J. Patterson
Sciviamonas terricola F. Ekelund, D.J. Patterson, & N. Vørs
SCLERNAX Rafinesque
Sclernax lutescens Rafinesque
Sclernax truncata Rafinesque
SCLEROCOCCUS P.K. Maithy & O.N. Bhargava
Sclerococcus jutoghensis P.K. Maithy & O.N. Bhargava
SCOLIONEIDACEAE D.G. Mann
SCOLIONEIS D.G. Mann
Scolioneis brunkseiensis (Hendey) D.G. Mann
Scolioneis tumida (Brébisson ex Kützing) D.G. Mann
Scoliopleura brunkseiensis Hendey
Scoliopleura jenneri Grunow
Scopularia annulata Chauvin
Scotiella multistriata H. Trenkwalder
Scotiella oocystiformis J.W.G. Lund
Scotiella terrestris H. Reisigl
Scotiella turficola Skuja ex T. Willén
Scotinosphaera austriaca (M. Puncochárová) D.E. Wujek & R.H. Thompson
Scotinosphaera gibberosa (D. Vodenicarov & D. Benderliev) D.E. Wujek & R.H. Thompson
Scotinosphaera gibberosa var. polymorpha (M. Puncochárová) D.E. Wujek & R.H. Thompson
Scotinosphaera grandis (Bristol) D.E. Wujek & R.H. Thompson
Scotinosphaera lemnae (M. Puncochárová) D.E. Wujek & R.H. Thompson
SCOTLANDELLA O. Dragastan
Scotlandella alpina O. Dragastan
Scotlandella nodosa (F.W. Anderson) O. Dragastan
SCOURFIELDIACEAE Ø. Moestrup
SCOURFIELDIALES Ø. Moestrup
Scriniodinium dictyotum Cookson & Eisenack
Scriniodinium pharo (S. Duxbury) R.J. Davey
Scriniodinium trabeculosum H. Gocht
Scrinocassis downiei A. Kumar
Scrippsiella arenicola T. Horiguchi & R.N. Pienaar
Scrippsiella caponii T. Horiguchi & R.N. Pienaar
Scrippsiella chattonii (Hovasse) A.T. Banaszak, R. Iglesias-Prieto, & R.K. Trench
Scrippsiella crystallina J. Lewis
Scrippsiella hangoei (J. Schiller) J. Larsen
Scrippsiella infula (Deflandre) M. Montresor
Scrippsiella lachrymosa J. Lewis
Scrippsiella minima X. Gao & J.D. Dodge
Scrippsiella nutricula (Brandt) A.T. Banaszak, R. Iglesias-Prieto, & R.K. Trench
Scrippsiella operosa (Deflandre) M. Montresor
Scrippsiella precaria M. Montresor & A. Zingone
Scrippsiella ramonii M. Montresor
Scrippsiella regalis (K.R. Gaarder) D. Janofske
Scrippsiella rotunda J. Lewis
Scrippsiella spinifera G. Honsell & M. Cabrini
Scrippsiella trifida J. Lewis
Scrippsiella triquetracapitata K.J.S. Meier, D. Janofske, & H. Willems
Scrippsiella trochoidea var. aciculifera M. Montresor
Scrippsiella velellae A.T. Banaszak, R. Iglesias-Prieto, & R.K. Trench
Scrippsiella velellae A.T. Banaszak, R. Iglesias-Prieto, & R.K. Trench
Scutarius bonnemaisonii (C. Agardh) Kuntze
Scutarius gmelinii (Kützing) Kuntze
Scytochloria bullata (A.P. de Candolle) Trevisan
SCYTONEMA Bornet & Flahault
Scytonema alatum Bornet & Flahault
Scytonema ambiguum Bornet & Flahault
Scytonema arcangelii Bornet & Flahault
Scytonema cincinnatum Bornet & Flahault
Scytonema coactile Bornet & Flahault
Scytonema crassum Nägeli ex Kützing
Scytonema crassum Bornet & Flahault
Scytonema crassum var. indicum S.M.F. Silva
Scytonema crustaceum C. Agardh
Scytonema crustaceum Bornet & Flahault
Scytonema crustaceum var. incrustans Bornet & Flahault
Scytonema crustaceum var. incrustans (Kützing) Bornet & Flahault
Scytonema densum Bornet & Flahault
Scytonema figuratum var. leprieurii (Montagne) Bornet & Flahault
Scytonema figuratum var. lepriieurii Bornet & Flahault
Scytonema flavoviride (Kützing) Bornet & Flahault
Scytonema flavoviride Bornet & Flahault
Scytonema guyanense Bornet & Flahault
Scytonema guyanense (Montagne) Bornet & Flahault
Scytonema hamelinii C.D. Gebelein
Scytonema hofmannii Bornet & Flahault
Scytonema hofmannii var. symplocoides Bornet & Flahault
Scytonema hofmannii var. symplocoides (Reinsch) Bornet & Flahault
Scytonema insulare C.L. Sant'Anna
Scytonema intricatum Bory
Scytonema involvens (A. Braun) Rabenhorst
Scytonema involvens Bornet & Flahault
Scytonema involvens Forti
Scytonema involvens var. elongatum Bourrelly
Scytonema javanicum Bornet & Flahault
Scytonema millei Bornet & Flahault
Scytonema myochrous Bornet & Flahault
Scytonema ocellatum (Dillwyn) Lyngbye
Scytonema ocellatum Bornet & Flahault
Scytonema pellucidum C. Cramer
Scytonema phormidioides Bulnheim & Rabenhorst
Scytonema polycystum Bornet & Flahault
Scytonema rivulare Bornet & Flahault
Scytonema sanguineum Cesati
Scytonema sanpaulense C.L. Sant'Anna
Scytonema siculum Bornet & Flahault
Scytonema simmeri Schmidle
Scytonema stuposum Bornet & Flahault
Scytonema subcoactile var. aurantiacum C. Sarthou, Y. Thérézien, & A. Couté
Scytonema tolypotrichoides Bornet & Flahault
Scytonema turicense var. muscicola Hepp
Scytonema varium Bornet & Flahault
Scytonema velutinum Wallroth
Scytonema velutinum Kützing
Scytonema velutinum (Kützing) Rabenhorst
Scytonema velutinum Bornet & Flahault
Scytonemaa figuratum Bornet & Flahault
Scytonematopsis neocaledoniensis A. Couté, G. Tell, & Y. Thérézien
Scytonematopsis pilosa (Harvey ex Bornet & Flahault) I. Umezaki & M. Watanabe
Scytosiphon canaliculatus (Setchell & Gardner) K. Kogame
Scytosiphon clathratus (Roth) Lyngbye
Scytosiphon clathratus var. uncinatus Lyngbye
Scytosiphon compressus (Linnaeus) Lyngbye
Scytosiphon compressus var. confervoideus Lyngbye
Scytosiphon compressus var. crispatus Lyngbye
Scytosiphon compressus var. nematodes Wallroth
Scytosiphon compressus var. trichodes Wallroth
Scytosiphon echinatus (Roth) Trevisan
Scytosiphon erectus Lyngbye
Scytosiphon gracilis K. Kogame
Scytosiphon intestinalis (Linnaeus) Lyngbye
Scytosiphon intestinalis var. cornucopiae Lyngbye
Scytosiphon intestinalis var. crispus (Roth) Lyngbye
Scytosiphon intestinalis var. nematodes Wallroth
Scytosiphon intestinalis var. physingodes Wallroth
Scytosiphon intestinalis var. plynthodes Wallroth
Scytosiphon intestinalis var. trichodes Wallroth
Scytosiphon juergensii C. Agardh
Scytosiphon lomentaria var. complanatus Rosenvinge
Scytosiphon percursus (C. Agardh) Wallroth
Scytosiphon ramulosus (J.E. Smith) S.F. Gray
Scytosiphon rimosus (Montagne) Endlicher
Scytosiphon simplicissimus (Clemente) J. Cremades
Scytosiphon simplicissimus var. complanatus (Rosenvinge) J. Cremades
Scytosiphon templetonii S.F. Gray
Scytosiphon tenellus K. Kogame
Scytosiphon tortilis Ruprecht
SCYTOTHAMNALES A.F. Peters & M.N. Clayton
SEAGRIEFIA H. Stegenga, J.J. Bolton, & R.J. Anderson
Seagriefia fasciculifera H. Stegenga, J.J. Bolton, & R.J. Anderson
Sebdenia actinophysa (Howe) E. Soler-Onís
Sebdenia amoena (Bory) E. Soler-Onís
Sebdenia canariensis E. Soler-Onís, R.J. Haroun, & W.F. Prud'homme van Reine
Sebdenia dawsonii (I.A. Abbott) G.I. Hansen
Sebdenia dichotoma Berthold
Sebdenia dichotoma (J. Agardh) L. Codomier
Sebdenia feldmannii L. Codomier
Sebdenia integra B. Gavio, E. Hickerson, & S. Fredericq
Sebdenia macaronesica E. Soler-Onís
Sebdenia senegalensis (M. Bodard) E. Soler-Onís
Seirospora gaillonii (P. Crouan & H. Crouan) De Toni
Seirospora interrupta (J.E. Smith) Schmitz
Seirospora viridis N.E. Aponte & D.L. Ballantine
SELENODICTYON G. Uherkovich & A. Schmidt ex A. Comas & J. Komárek
Selenodictyon brasiliense G. Uherkovich & A. Schmidt ex A. Comas & J. Komárek
Selenodictyon elongatum (F. Hindák) A. Comas & J. Komárek
Selenodictyon naviculiforme A. Comas & J. Komárek
Selenopemphix hamanaensis N. Kojima
Seletonella sajanica K.B. Korde
Sellaphora americana (Ehrenberg) D.G. Mann
Sellaphora amoena D. Metzeltin & H. Lange-Bertalot
Sellaphora auldreekie D.G. Mann & S.M. McDonald
Sellaphora bacillarioides (Grunow) N.A. Andresen, E.F. Stoermer, & R.G. Kreis, Jr.
Sellaphora bacillum (Ehrenberg) D.G. Mann
Sellaphora blackfordensis D.G. Mann & S.J.M. Droop
Sellaphora californica M. Potapova
Sellaphora capitata D.G. Mann & S.M. McDonald
Sellaphora costei D. Metzeltin & H. Lange-Bertalot
Sellaphora densistriata (H. Lange-Bertalot & D. Metzeltin) H. Lange-Bertalot & D. Metzeltin
Sellaphora disjuncta (Hustedt) D.G. Mann
Sellaphora gibbula D. Metzeltin & H. Lange-Bertalot
Sellaphora gregoryana (Cleve & Grunow) D. Metzeltin & H. Lange-Bertalot
Sellaphora guyanensis D. Metzeltin & H. Lange-Bertalot
Sellaphora illustris D. Metzeltin & H. Lange-Bertalot
Sellaphora joubaudii (H. Germain) M. Aboal
Sellaphora julma H. Lange-Bertalot & D. Metzeltin
Sellaphora laevissima (Kützing) D.G. Mann
Sellaphora lambda (Cleve) D. Metzeltin & H. Lange-Bertalot
Sellaphora lambda (Cleve) T. Ohtsuka
Sellaphora lambda var. densistriata D. Metzeltin & H. Lange-Bertalot
Sellaphora lambda var. nipponica (Skvortzov) T. Ohtsuka
Sellaphora lanceolata D.G. Mann & S.J.M. Droop
Sellaphora lange-bertalotii D. Metzeltin
Sellaphora laterostellata D. Metzeltin & H. Lange-Bertalot
Sellaphora laterostrata D. Metzeltin & H. Lange-Bertalot
Sellaphora madagascariensis D. Metzeltin & H. Lange-Bertalot
Sellaphora mantasoana D. Metzeltin & H. Lange-Bertalot
Sellaphora mutatoides H. Lange-Bertalot & D. Metzeltin
Sellaphora nyassensis (O. Müller) D.G. Mann
Sellaphora nyassensis f. minor (O. Müller) N.A. Andresen, E.F. Stoermer, & R.G. Kreis, Jr.
Sellaphora obesa D.G. Mann & M.M. Bayer
Sellaphora omuelleri D. Metzeltin & H. Lange-Bertalot
Sellaphora paenepupula D. Metzeltin & H. Lange-Bertalot
Sellaphora pupula var. densistriata H. Lange-Bertalot & D. Metzeltin
Sellaphora pupula var. rostrata (Hustedt) M. Aboal
Sellaphora riojae (Cleve) E. Reichardt
Sellaphora rostrata (Hustedt) J.R. Johansen
Sellaphora seminulum (Grunow) D.G. Mann
Sellaphora subdeliberata (E. Manguin) E. Reichardt
Sellaphora sublinearis D. Metzeltin & H. Lange-Bertalot
Sellaphora tapajosensis D. Metzeltin & H. Lange-Bertalot
Sellaphora tau (Cleve) D. Metzeltin & H. Lange-Bertalot
Sellaphora tenerrima D. Metzeltin & H. Lange-Bertalot
Sellaphora triundulata D. Metzeltin & H. Lange-Bertalot
Sellaphora ventraloconfusa (Lange-Bertalot) D. Metzeltin & H. Lange-Bertalot
Sellaphora verecundiae H. Lange-Bertalot
Sellaphora vitabunda (Hustedt) D.G. Mann
Sellaphora wummensis J.R. Johansen
SELLAPHORINEAE D.G. Mann
SELLAPHOROPSIS D. Metzeltin & H. Lange-Bertalot
SEMINAVIS D.G. Mann
Seminavis arranensis D.B. Danielidis & D.G. Mann
Seminavis basilica D.B. Danielidis
Seminavis cymbelloides (Grunow) D.G. Mann
Seminavis eulensteinii (Grunow) D.B. Danielidis, K. Ford, & D. Kennett
Seminavis gracilenta D.G. Mann
Seminavis heidenii D.G. Mann
Seminavis latior (A. Schmidt) D.B. Danielidis & D.G. Mann
Seminavis macilenta (Gregory) D.B. Danielidis & D.G. Mann
Seminavis obtusiuscula (Grunow) D.B. Danielidis & D.G. Mann
Seminavis pusilla (Grunow) E.J. Cox & G. Reid
Seminavis robusta D.B. Danielidis & D.G. Mann
Seminavis strigosa (Hustedt) D.B. Danielidis & A. Economou-Amilli
Seminavis ventricosa (Gregory) M. Garcia-Baptista
SEMNOCARPA J.M. Huisman, H.J. Foard, & G.T. Kraft
Semnocarpa corynephora (J. Agardh) J.M. Huisman, H.J. Foard, & G.T. Kraft
Semnocarpa minuta J.M. Huisman, H.J. Foard, & G.T. Kraft
SENTUSIDINIUM W.A.S. Sarjeant & L.E. Stover
Sentusidinium atlanticum (D. Habib) W.A.S. Sarjeant & L.E. Stover
Sentusidinium baculatum (L. Dodekova) W.A.S. Sarjeant & L.E. Stover
Sentusidinium echinatum (G.U. Gitmez & W.A.S. Sarjeant) W.A.S. Sarjeant & L.E. Stover
Sentusidinium hexagonalis A. Kumar
Sentusidinium neophytensum (N.S. Ioannides, G.N. Stavrinos, & C. Downie) W.A.S. Sarjeant & L.E. Stover
Sentusidinium pilosum (Ehrenberg) W.A.S. Sarjeant & L.E. Stover
Sentusidinium rioultii (W.A.S. Sarjeant) W.A.S. Sarjeant & L.E. Stover
Sentusidinium varispinosum (W.A.S. Sarjeant) W.A.S. Sarjeant & L.E. Stover
Sentusidinium verrucosum (W.A.S. Sarjeant) W.A.S. Sarjeant & L.E. Stover
Sentusidinium villarsense (W.A.S. Sarjeant) W.A.S. Sarjeant & L.E. Stover
Septamesocena apiculata ssp. curvata (D. Bukry) T.V. Desikachary & P. Prema
Septamesocena apiculata ssp. evexa (D. Bukry) T.V. Desikachary & P. Prema
Septamesocena apiculata ssp. glabra (P. Schulz) T.V. Desikachary & P. Prema
Septamesocena apiculata ssp. inflata (D. Bukry) T.V. Desikachary & P. Prema
Septamesocena apiculata ssp. monolineata (D. Bukry) T.V. Desikachary & P. Prema
Septamesocena pappii (A. Bachmann) T.V. Desikachary & P. Prema
Septamesocena schulzii (E. Martini & C. Müller) T.V. Desikachary & P. Prema
Septorella ultima L. Grambast
SERIBISCUTUM M.V. Filewicz, F.H. Wind, & S.W. Wise, Jr.
Seribiscutum pinnatum (M. Black) S.W. Wise, Jr.
Seribiscutum primitivum (H.R. Thierstein) M.V. Filewicz, F.H. Wind, & S.W. Wise, Jr.
Seribiscutum salebrosum (M. Black) S.W. Wise, Jr.
Seribuscutum bijugum M.V. Filewicz, F.H. Wind, & S.W. Wise, Jr.
SERPENOMONAS R.E. Triemer
Serpenomonas costata R.E. Triemer
SEXTIPUTEUS R. Ross & P.A. Sims
Sextiputeus inornatus R. Ross & P.A. Sims
Sextiputeus reticulatus (N.I. Hendey & P.A. Sims) R. Ross & P.A. Sims
Shepleya elixithamnia E. Gordon-Mills & R.E. Norris
Sheshukovia abyssorum (Grunow) Z.I. Glezer
Sheshukovia cellulosa var. simbirskiana (Witt) J. Fenner
Sheshukovia duplicata (A. Schmidt) Z.I. Glezer
Sheshukovia excavata (Heiberg) V.A. Nikolaev & D.M. Harwood
Sheshukovia fenestrata (Witt) Z.I. Glezer
Sheshukovia sundbyensis (Hustedt ex R. Simonsen) J. Fenner
Sheshukovia synica (N.I. Strelnikova) Z.I. Glezer
Sheshukovia uralensis (N.I. Strelnikova) Z.I. Glezer
Sheshukovia weissei (Grunow ex Witt) Z.I. Glezer
SIEMINSKIA D. Metzeltin & H. Lange-Bertalot
Sieminskia wohlenbergii (Brockmann) D. Metzeltin & H. Lange-Bertalot
Sieminskia zeta (Cleve) D. Metzeltin & H. Lange-Bertalot
SIGMATELLA Kützing
SIGMATELLA (Kützing) Kützing
Sigmatella nitzschii Kützing
SILICOPHYCIDAE T. Cavalier-Smith
SILIQUARIUS Roussel
Siliquarius osmundaceus (Turner) Kuntze
SILVANELLA O. Dragastan
Silvanella coronata O. Dragastan
SILVANELLEAE O. Dragastan
SILVETIA E.A. Serrão, T.O. Cho, S.M. Boo, & S.H. Brawley
Silvetia babingtonii (Harvey) E.A. Serrão, T.O. Cho, S.M. Boo, & S.H. Brawley
Silvetia compressa (J. Agardh) E.A. Serrão, T.O. Cho, S.M. Boo, & S.H. Brawley
Silvetia compressa f. deliquescens P.C. Silva
Silvetia compressa subsp. deliquescens P.C. Silva
Silvetia siliquosa (C.K. Tseng & C.F. Chang) E.A. Serrão, T.O. Cho, S.M. Boo, & S.H. Brawley
Simonsenia delognei subsp. rossii H. Lange-Bertalot & K. Krammer
Simonseniella barboi (Brun) Fenner
Simonseniella praebarboi (Schrader) Fenner
SINKORAENA H.-B. Lee, J.A. Lewis, G.T. Kraft, & I.K. Lee
Sinkoraena lancifolia (Harvey) H.-B. Lee, J.A. Lewis, G.T. Kraft, & I.K. Lee
Sinkoraena okamurae (Yamada) H.-B. Lee, J.A. Lewis, G.T. Kraft, & I.K. Lee
Sinkoraena tasmanica (H.B.S. Womersley & J.A. Lewis) H.-B. Lee, J.A. Lewis, G.T. Kraft, & I.K. Lee
Sinochara rudongensis Lin & Z. Wang
Sinophysis canaliculata J.-P. Quod, L. Ten-Hage, J. Turquet, G. Mascarell, & A. Couté
Sinophysis grandis M. Hoppenrath
Sinophysis minima M. Salina & M. Hoppenrath
Sinophysis stenosoma M. Hoppenrath
SIPHONALES R. Wettstein
SIPHONEAE Warming
Siphonocladus delphini Hariot
Siphonocladus rigidus Howe
SIPHONOMYCETALES C.E. Bessey
SIPHONONEMA Geitler
Siphononema polonicum Geitler
SIPHONOPHYCIDAE K.I. Meyer
Siphonophycus beltensis R.J. Horodyski
Siphonophycus crassiusculus R.J. Horodyski
Siphonophycus indicus A.C. Nautiyal
Siphonophycus lamellosus X.X. Liu
Siphonophycus punctatus P.K. Maithy
SIPHONOPHYTA L. Margulis
SIPHONOSPHAERA F. Hindák
Siphonosphaera pannonica F. Hindák
SIPHORUS Rafinesque
Siphorus alternus Rafinesque
Siphorus fasciculatus Rafinesque
SIPHYTUS Rafinesque
Siphytus filiformis Rafinesque
Siphytus hexodon Rafinesque
Siphytus obconicus Rafinesque
Sirocoleum amorphum (Thwaites ex Gomont) I. Umezaki & M. Watanabe
SIRODOTIA (Kylin) O. Necchi, Jr. & T.J. Entwisle
Sirodotia ambigua Skuja ex T.J. Entwisle
Sirodotia ateleia var. australis Skuja ex T.J. Entwisle
Sirodotia cirrhosa Skuja ex M.S. Balakrishnan & B.B. Chaugule
Sirodotia delicatula Skuja
Sirodotia fennica Skuja
Sirodotia goebelii T.J. Entwisle & H.J. Foard
Sirodotia loefgrenii Skuja
Sirodotia polygama Skuja ex L.H. Flint
Sirodotia suecica Kylin
Sirodotia suecica var. australis Skuja ex T.J. Entwisle
Sirodotia tenuissima Skuja ex L.H. Flint
Sirogonium khoriense Masud-ul-Hassan & M. Nizamuddin
Sirogonium sticticum f. tenuius (Transeau) L.A. Rundina
Sirogonium tenuius Transeau
Sirosiphon rhizodes Brébisson
Sirosiphon velutinus (Wallroth) Kützing
Skeletenema subsalsum (Cleve-Euler) Bethge
Skeletonema barbadense Greville
Skeletonema denticulatum N.I. Strelnikova
Skeletonema dohrnii D. Sarno & W.H.C.F. Kooistra
Skeletonema grethae A. Zingone & D. Sarno
Skeletonema grevillei D. Sarno & A. Zingone
Skeletonema japonicum A. Zingone & D. Sarno
Skeletonema marinoi D. Sarno & A. Zingone
Skeletonema probabile A.P. Jousé
Skeletonema pseudocostatum L.K. Medlin
Skeletonema simbirskianum A. Schmidt
Skeletonema ventricosum N.W. Anissimowa
SKELETONEMATACEAE Lemmermann
SKELETONEMATINAE Schütt
SKELETONEMOPSIS P.A. Sims
Skeletonemopsis barbadensis (Greville) P.A. Sims
Skeletonemopsis crawfordii P.A. Sims
Skeletonemopsis mahoodii P.A. Sims
Skeletonemopsis morenoensis P.A. Sims
Skeletonemopsis rugosa P.A. Sims
Skeletonemopsis simbirskiana (A. Schmidt) P.A. Sims
Skiagia pura M. Moczydowska
SKOTTSBERGIA Skuja ex T.J. Entwisle & H.J. Foard
SKUJANEMA K. Anagnostidis & J. Komárek
SKUJASTER D.G. Vodenicarov
Skujaster asteriferus (B. Fott) D.G. Vodenicarov
Smithora naiadum (C.L. Anderson) G.J. Hollenberg
Snowella fennica J. Komárek & J. Komárková-Legnerová
SOLENIA C. Agardh
Solenia attenuata C. Agardh
Solenia bertolonii C. Agardh
Solenia bulbosa Suhr
Solenia clathrata (Roth) C. Agardh
Solenia clathrata var. confervoidea (C. Agardh) C. Agardh
Solenia clathrata var. uncinata (Lyngbye) C. Agardh
Solenia compressa (Linnaeus) C. Agardh
Solenia compressa var. crinita (Nees) C. Agardh
Solenia compressa var. prolifera (O.F. Müller) C. Agardh
Solenia echinata Carmichael mss
Solenia fulvescens (C. Agardh) C. Agardh
Solenia intestinalis (Linnaeus) C. Agardh
Solenia intestinalis var. cornucopiae (Lyngbye) C. Agardh
Solenia intestinalis var. crispa (Roth) C. Agardh
Solenia intestinalis var. maxima (C. Agardh) C. Agardh
Solenia linza (Linnaeus) C. Agardh
Solenia linza var. lanceolata (Linnaeus) C. Agardh
Solenia percursa (C. Agardh) C. Agardh
Solenia subulata (Wulfen) Naccari
Solentia sanguinea S. Golubic, A.A. Al-Thukair, & M. Gektidis
Solieria filiformis (Kützing) P.W. Gabrielson
Solieria pacifica (Yamada) T. Yoshida
SOLIERIEAE Schmitz & Hauptfleisch
SOLIERIOIDEAE De Toni
SOLISPHAERA J. Bollmann, M.Y. Cortés, A. Kleine, J.B. Østergaard, & J.R. Young
Solisphaera blagnacensis J. Bollmann
Solisphaera emidasia J. Bollmann, M.Y. Cortés, A. Kleine, J.B. Østergaard, & J.R. Young
Solisphaera helianthiformis J. Bollmann, M.Y. Cortés, A. Kleine, J.B. Østergaard, & J.R. Young
Sollasites falklandensis M.V. Filewicz, F.H. Wind, & S.W. Wise, Jr.
Sollasites thiersteinii M.V. Filewicz, F.H. Wind, & S.W. Wise, Jr.
Sommierella cossyrensis Borzì
SONDERELLEAE L.E. Phillips
Songliaochara heilongjiangensis Z. Wang, Lu, & Zhao
SORASTREAE A.W. Bennett
SORASTREAE Bennett & Murray
Sorella pulchra (Yamada) T. Yoshida & H. Mikami
SORELLOCOLAX T. Yoshida & H. Mikami
Sorellocolax stellaris T. Yoshida & H. Mikami
SOROCARPACEAE P.M. Pedersen
Sorocarpus pacificus Hollenberg
Sorocarpus parvus Takamatsu
Soropediastrum howardii (Prescott) A. Comas
Soropediastrum printzii (Rayss) A. Comas
SPARLINGIA G.W. Saunders, I.M. Strachan, & G.T. Kraft
Sparlingia pertusa (Postels & Ruprecht) G.W. Saunders, I.M. Strachan, & G.T. Kraft
Spatoglossum crassum J. Tanaka
Spatoglossum dichotomum C.K. Tseng & B. Lu
Spatoglossum howellii Setchell & Gardner
Spatoglossum latum J. Tanaka
Spatoglossum pacificum Yendo
Spermatozopsis similis H.R. Preisig & M. Melkonian
Spermipole effusa Rafinesque
Spermosira hallensis Janczewski
SPERMOTHAMNIEAE Schmitz & Hauptfleisch
SPERMOTHAMNIOIDEAE De Toni
Spermothamnion antillarum H. Stegenga & M. Vroman
Spermothamnion boergesenii V. Krishnamurthy
Spermothamnion umamaheswarae V. Krishnamurthy
SPHACELARIA subg. BRACTEATA W. Prud'homme van Reine
SPHACELARIA subg. REINKEA W. Prud'homme van Reine
Sphacelaria cirrosa var. subsecunda Grunow
Sphacelaria kovalamensis V. Krishnamurthy & M. Baluswami
Sphacelaria kovalamensis V. Krishnamurthy & M. Baluswami
Sphacelaria nipponica T. Kitayama
Sphacelaria novae-hollandiae Sonder
Sphacelaria olivacea var. caespitosa N. Pringsheim
Sphacelaria olivacea var. elatior N. Pringsheim
Sphacelaria olivacea var. solitaria N. Pringsheim
Sphacelaria plumigera E.M. Holmes
Sphacelaria recurva Y.-S. Keum, J.H. Oak, W.F. Prud'homme van Reine, & I.K. Lee
SPHACELARIA series HUMERATAE W. Prud'homme van Reine
Sphacelaria tsengii S.G.A. Draisma, Y.-S. Keum, W.F. Prud'homme van Reine, & G.M. Lokhorst
Sphaenosiphon aquae-dulcis Reinsch
Sphaenosiphon farlowii (Børgesen) R. Nielsen & K. Gunnarsson
Sphaenosiphon hemisphaericus (Setchell & Gardner) P.C. Silva
Sphaenosiphon minimus (Geitler) P.C. Silva
Sphaenosiphon olivaceus var. giganteus (C.B. Rao) P.C. Silva
Sphaerastrum ellipticum Meyen
Sphaerellopsis gloeocystiformis f. ferruginosa F. Wawrik
Sphaerellopsis ordinata H. Skuja
Sphaerocalyptra adenensis A. Kleijne
Sphaerocarpus microcarpus C. Agardh
SPHAEROCAVUM M.T. de P. Azevedo & C.L. Sant'Anna
Sphaerocavum brasiliense M.T. de P. Azevedo & C.L. Sant'Anna
Sphaerocavum leloupii (Kufferath) M.T. de P. Azevedo & C.L. Sant'Anna
Sphaerocavum microcystiforme (F. Hindák) M.T. de P. Azevedo & C.L. Sant'Anna
Sphaerochara biambonaria Y.C. Hao
Sphaerochara bicarinata G.D. Yang
Sphaerochara convexa G.D. Yang
Sphaerochara intricata (Trentepohl ex Roth) M. Feist & N. Grambast-Fessard
Sphaerochara kuitunensis Junying Liu & Xinying Wu
Sphaerochara magna Zhen Wang
Sphaerochara minheensis G.D. Yang
Sphaerochara minuscula G.D. Yang
Sphaerochara rugulosa Zhen Wang
Sphaerochara subquadrata G.D. Yang
Sphaerochara yangii S. Wang
SPHAEROCHLAMYDELLA I. Kostikov, T. Darienko, A. Lukesová, & L. Hoffmann
Sphaerochlamydella minuta (J. Komárek) I. Kostikov, T. Darienko, A. Lukesová, & L. Hoffmann
Sphaerochlamydella minutissima (P. Broady) I. Kostikov, T. Darienko, A. Lukesová, & L. Hoffmann