User:Juliancolton/Algae AfD2


 * Abacum
 * Abbottella
 * Abbottia
 * Abedinium
 * Abratopdinium
 * Acanthochloris
 * Acanthococcus
 * Acanthocorbis
 * Acanthodiacrodium
 * Acanthodinium
 * Acanthogonyaulax
 * Acanthoica
 * Acanthopeltis
 * Acaryochloris
 * Achnantheiopsis
 * Achnanthepyla
 * Achnanthes
 * Achnanthidium
 * Achnanthosigma
 * Achomosphaera
 * Achradina
 * Acinetospora
 * Aclistochara
 * Acrocarpia
 * Acrochaetium
 * Acrocystis
 * Acrocytis
 * Acrodiscus
 * Acrosorium
 * Acrospongium
 * Acrosymphyton
 * Acrothamnion
 * Acrothamniopsis
 * Acrothrix
 * Acrotrichium
 * Acrotylus
 * Actinellipsoidion
 * Actinema
 * Actiniscus
 * Actinoclava
 * Actinocyclus
 * Actinodictyon
 * Actinodinium
 * Actinodiscus
 * Actinogonium
 * Actinogramma
 * Actinomonas
 * Actinoneis
 * Actinophaenia
 * Actinoptychus
 * Actinostephanos
 * Actinotrichia
 * Actinozygus
 * Acutochara
 * Acuturris
 * Acystis
 * Adamsiella
 * Adelophycus
 * Adelophyton
 * Adenocystis
 * Adenoides
 * Adinimonas
 * Adlafia
 * Adnatosphaeridium
 * Adoneis
 * Adriamonas
 * Adriogloia
 * Aeodes
 * Aeronema
 * Aeronemum
 * Aerosphaera
 * Agardhiella
 * Agardhinula
 * Agarum
 * Aglaothamnion
 * Ahmuellerella
 * Ahnfeldtia
 * Ahnfeltia
 * Ahnfeltiopsis
 * Ailuretta
 * Aiolocolax
 * Akalaphycus
 * Akashiwo
 * Akkesiphycus
 * Alatocladia
 * Albrightia
 * Alcyonidium
 * Alcyonium
 * Aldavemyxa
 * Aldorfia
 * Alethocladus
 * Algirosphaera
 * Algites
 * Alisphaera
 * Alloeoneis
 * Allogonium
 * Alloioneis
 * Allonitzschia
 * Allorgeia
 * Alsidium
 * Alternantia
 * Alveoflexus
 * Alveolophora
 * Alveosphaera
 * Amansia
 * Amaurolithus
 * Ambistria
 * Amblyochara
 * Amblyophis
 * Amblypyrgus
 * Amiculosphaera
 * Amithalithina
 * Ammatoidea
 * Ammodochium
 * Amoebophyra
 * Amoenothamnion
 * Amphicampa
 * Amphiceratium
 * Amphichrysis
 * Amphicocconeis
 * Amphidiniella
 * Amphidiniopsis
 * Amphidinium
 * Amphidiscus
 * Amphidoma
 * Amphipentas
 * Amphiplexia
 * Amphiprora
 * Amphiraphia
 * Amphirhiza
 * Amphiroa
 * Amphisbetema
 * Amphisolenia
 * Amphitetras
 * Amphithrix
 * Amphitropis
 * Amphizygus
 * Amphora (alga)
 * Amphorochara
 * Amphoropsis
 * Amphorula
 * Amplisiphonia
 * Amscottia
 * Amylax
 * Amyloodinium
 * Anabaenopsis
 * Anabaria
 * Anacanthoica
 * Anadema
 * Analipus
 * Anatheca
 * Anaulus
 * Ancoropsis
 * Ancylonema
 * Ancylopyrgus
 * Andalusiella
 * Andrewsiella
 * Aneumastus
 * Aneurianna
 * Angulochrysis
 * Angulopyxidium
 * Animikiea
 * Anisocladella
 * Anisodiscus
 * Anisoraphe
 * Anisoschizus
 * Ankistrodesmopsis
 * Ankylochrysis
 * Ankylonoton
 * Annellus
 * Anomoeoneis
 * Anoplosolenia
 * Anorthoneis
 * Anotrichium
 * Anotropis
 * Antarcticophyllum
 * Antarcticothamnion
 * Antarctocolax
 * Antarctosaccion
 * Antelminellia
 * Anthemodiscus
 * Anthodiscina
 * Anthophycus
 * Anthophysa
 * Anthosphaera
 * Anticomonas
 * Antithamnion
 * Antithamnionella
 * Antrocentrum
 * Antrosphaera
 * Anuloplicata
 * Apatococcus
 * Apedinella
 * Aphanarthron
 * Aphanocapsa
 * Aphanocapsaopsis
 * Aphanocladia
 * Aphanothece
 * Aphanta
 * Apiochloris
 * Apiocystis
 * Apistonema
 * Apodococcus
 * Apoglossocolax
 * Apoglossum
 * Apophlaea
 * Aporidiscus
 * Aporodiscus
 * Appeninocodium
 * Aprobolocysta
 * Aptea
 * Apteodinium
 * Apteroe
 * Apterosoma
 * Arachnochloris
 * Arachnoidiscus
 * Arachnophyllum
 * Archaegladiopsis
 * Archaeolithothamnion
 * Archaeolithothamnium
 * Archaeomonas
 * Archaeosphaerodiniopsis
 * Archepyrgus
 * Archimedea
 * Arcocellulus
 * Ardissonula
 * Ardreanema
 * Areschougia
 * Argillamonas
 * Aristoptilon
 * Arkhangelskiella
 * Arthopyrenia
 * Arthrocardia
 * Arthrochrysis
 * Arthrocladia
 * Arthrogloea
 * Arthrogyra
 * Arthronema
 * Arthropyxis
 * Arturoa
 * Ascocyclus
 * Ascoglena
 * Ascoseira
 * Ascoseirophila
 * Ascothamnion
 * Aspalatia
 * Asparagopsis
 * Asperococcus
 * Asphaltinella
 * Astartiella
 * Asterionellopsis
 * Asterocapsa
 * Asterochloris
 * Asterocladon
 * Asterocolax
 * Asterocytis
 * Asterodinium
 * Asterodiscus
 * Asterogloea
 * Asterolampra
 * Asteromenia
 * Asteromphalus
 * Asteronema
 * Asteroplanus
 * Asterosiphon
 * Asterotrichia
 * Astrocladium
 * Atelodinium
 * Athenagalea
 * Atlanticellodinium
 * Atlantodinium
 * Atractella
 * Atraktochrysis
 * Atraktomonas
 * Augophyllum
 * Aulacocystis
 * Aulacodiscus
 * Aulacomonas
 * Aulakochloris
 * Auliscus
 * Aulosira
 * Aureococcus
 * Aureoumbra
 * Auriculopsis
 * Aurosphaera
 * Australisphaera
 * Australodiscus
 * Australofilum
 * Austroclonium
 * Austrofolium
 * Austrolithon
 * Austronereia
 * Austrophyllis
 * Avellodinium
 * Axillariella
 * Axilosphaera
 * Axopodorhabdus
 * Azpeitiopsis
 * Bacchidinium
 * Bachelotia
 * Bachmannocena
 * Bacillaria
 * Bacinellacodium
 * Bacterosira
 * Bactryllium
 * Balaniger
 * Balanosa
 * Balbiania
 * Baldinia
 * Baldockia
 * Balechina
 * Ballia (alga)
 * Balliella
 * Balliopsis
 * Balticola
 * Baltisphaeridium
 * Bangia
 * Bangiadulcis
 * Bangiomorpha
 * Bangiopsis
 * Banquisia
 * Baradlaia
 * Bartoniella
 * Basilicostephanus
 * Basispora
 * Batiacasphaera
 * Batioladinium
 * Batrachospermella
 * Batrachospermum
 * Baxteriopsis
 * Beckingia
 * Bellerochea
 * Bellotia
 * Belonastrum
 * Belonidium
 * Benetorus
 * Bennettella
 * Benzaitenia
 * Berghiella
 * Bergonia
 * Beringia (alga)
 * Beringiella
 * Berkeleya
 * Berkella
 * Bernardinella
 * Bernardinium
 * Besa (alga)
 * Betaphycus
 * Bevocastria
 * Biblarium
 * Bicarinellum
 * Biceratium
 * Bicolumnus
 * Bicornis
 * Bicosoeca
 * Bicosta
 * Biddulphia
 * Biddulphiopsis
 * Bidiscus
 * Bifibulatia
 * Bifida
 * Bifurcariopsis
 * Bigelowiella
 * Bilgramia
 * Bilingua
 * Binghamiopsis
 * Binuclearia
 * Bipalla
 * Bipedinomonas
 * Biremis
 * Bisbullatum
 * Biscutum
 * Biturricula
 * Bjornbergiella
 * Blastodinium
 * Bleakeleya
 * Blennothrix
 * Blidingia/algaebase
 * Blinksia
 * Bodomonas
 * Boekelovia
 * Boergeseniella
 * Bogorovia
 * Boldia
 * Boletuvelum
 * Bonnemaisonia
 * Boreadinium
 * Boreolithon
 * Boreothamnion
 * Bornetia
 * Borodinellopsis
 * Boryna
 * Borzia
 * Borzinema
 * Bostrychiocolax
 * Botellus
 * Bothrochloris
 * Botrydiopsis
 * Botrydium
 * Botryella
 * Botryocarpa
 * Botryochloris
 * Botryochloropsis
 * Botryocladia
 * Botryoglossum
 * Botryokoryne
 * Botryosphaerella
 * Botrytella
 * Boueina
 * Bourellyodesmus
 * Bourrellia
 * Braarudosphaera
 * Bracchiogonium
 * Brachidinium
 * Brachybaculites
 * Brachycladia
 * Brachysira
 * Brachytheca
 * Brachytrichia
 * Brachytrichiopsis
 * Branchioglossum
 * Branchiophilus
 * Brasiliella
 * Brasilonema
 * Brassierea
 * Brebissonia
 * Brehmiella
 * Brenneckella
 * Brightwellia
 * Brockmanniella
 * Broinsonia
 * Bruniella
 * Bruniopsis
 * Bryobesia
 * Bryocladia
 * Bryothamnion
 * Buffhamia
 * Bukryella
 * Bulbochaete
 * Bulbotrichia
 * Bumilleria
 * Bumilleriopsis
 * Burkillia
 * Butschliella
 * Bysmatrum
 * Cachonodinium
 * Caecitellus
 * Caepidium
 * Cagniardia
 * Calciarcus
 * Calcidiscus
 * Calcigonellum
 * Calciodinellum
 * Calciopappus
 * Calciosolenia
 * Calcothrix
 * Calicasphaera
 * Caligodinium
 * Calkinsiella
 * Calliacantha
 * Calliarthron/algaebase
 * Calliblepharis
 * Calliclavula
 * Callidictyon
 * Callithamniella
 * Callithamnion
 * Callocolax
 * Callonema
 * Callophycus
 * Callophyllis
 * Calloseris
 * Calocylindrus
 * Calodiscus
 * Caloglossa
 * Calomena
 * Caloneis
 * Calonitophyllum
 * Calosiphonia
 * Calothrix
 * Calycimonas
 * Calycomonas
 * Calyptosporium
 * Calyptrolithina
 * Calyptrolithophora
 * Calyptrosphaera
 * Camontagnea
 * Camptothrix
 * Camptylonema
 * Camptylonemopsis
 * Campylaephora
 * Campylodiscus
 * Campyloneis
 * Campylopyxis
 * Campylosira
 * Campylostylus
 * Caneosphaera
 * Canistrocarpus
 * Canistrolithus
 * Canningia
 * Cannopilus
 * Cannosphaeropsis
 * Capartogramma
 * Capea
 * Capillicysta
 * Capitulariella
 * Caponea
 * Capreolia
 * Capsosira
 * Carduifolia
 * Carminella
 * Carpathocodium
 * Carpoblepharis
 * Carpococcus
 * Carpoglossum
 * Carpomitra
 * Carpopeltis
 * Carpophyllum
 * Carpothamnion
 * Cassiculosphaeridia
 * Castagnea
 * Castracania
 * Catacombas
 * Catella
 * Catenella
 * Catenellocolax
 * Catenellopsis
 * Catenococcus
 * Catenocystis
 * Catenula
 * Caulacanthus
 * Caulinia
 * Caulocystis
 * Caulodendron
 * Cavernosa
 * Cavinula
 * Cavitatus
 * Cayeuxia
 * Cecidochloris
 * Celloniella
 * Cenacrum
 * Centosphaera
 * Centrasphaeridium
 * Centritractus
 * Centroceras
 * Centrocerocolax
 * Centrodinium
 * Centroporus
 * Ceonogonium
 * Cephalocystis
 * Cephalomonas
 * Ceramiella
 * Cerataulina
 * Cerataulus
 * Ceratocolax
 * Ceratocorys
 * Ceratodictyon
 * Ceratodiscus
 * Ceratoperidinium
 * Cestodiscus
 * Chadefaudiothrix
 * Chaetoceras
 * Chaetocladiella
 * Chaetomorpha/algaebase
 * Chaetonella
 * Chaetopedia
 * Chaetopteris
 * Chaetotheke
 * Chalicostroma
 * Chalkopyxis
 * Chamaebotrys
 * Chamaecalyx
 * Chamaenema
 * Chamaepinnularia
 * Chamaesiphon
 * Chamaethamnion
 * Champia
 * Champiocolax
 * Chantransia
 * Characidiopsis
 * Characiopsis
 * Charcotia
 * Charlesdowniea
 * Chasea
 * Chattonella
 * Cheilosporum
 * Cheloniodiscus
 * Chevaliericrusta
 * Chiasmolithus
 * Chiastozygus
 * Chiharaea
 * Chihsienella
 * Chilionema
 * Chilomonas
 * Chiracanthia
 * Chlamydomonadopsis
 * Chlamydomyxa
 * Chlamydonephris
 * Chlamydophorella
 * Chlanidophora
 * Chlanidote
 * Chledripole
 * Chlidophyllon
 * Chlorallanthus
 * Chloramoeba
 * Chlorangiella
 * Chlorangiopsis
 * Chlorangium
 * Chloranomala
 * Chlorapion
 * Chlorarachnion
 * Chlorarkys
 * Chlorcorona
 * Chlorellidiopsis
 * Chlorellidium
 * Chloremys
 * Chlorepithema
 * Chloridella
 * Chlorobotrys
 * Chlorobrachis
 * Chloroceras
 * Chloroclados
 * Chloroclonium
 * Chlorocloster
 * Chlorocystis
 * Chlorodendron
 * Chlorodesmos
 * Chlorogibba
 * Chlorogloea
 * Chlorogloeaopsis
 * Chlorogloeopsis
 * Chloroidium
 * Chlorojackia
 * Chlorokardion
 * Chlorokoryne
 * Chlorolobion
 * Chloromeson
 * Chloronephris
 * Chloronomala
 * Chloropedia
 * Chloropelta
 * Chlorophysema
 * Chloroplana
 * Chloroplegma
 * Chloropteridella
 * Chlorosaccus
 * Chlorotetras
 * Chlorothecium
 * Chnoospora
 * Chodatellopsis
 * Chodatia
 * Chondracanthus
 * Chondria
 * Chondriella
 * Chondriopsis
 * Chondrocystis
 * Chondrodon
 * Chondrogloea
 * Chondrophycus
 * Chondrophyllum
 * Chondrosiphon
 * Chondrosphaera
 * Chondrus/algaebase
 * Chondrymenia
 * Chonemonas
 * Chorda
 * Chordaria
 * Chordariopsis
 * Choreocolax
 * Choreonema
 * Choristocarpus
 * Chroa
 * Chromastrum
 * Chromochloris
 * Chromopeltis
 * Chromophysomonas
 * Chromophyton
 * Chromulina
 * Chroococcidiopsis
 * Chroococcidium
 * Chroococcopsis
 * Chroococcus
 * Chroodactylon
 * Chroogloeocystis
 * Chroomonas
 * Chroothece
 * Chrysamoeba
 * Chrysanthemodiscus
 * Chrysapion
 * Chrysapsis
 * Chrysarachnion
 * Chrysastridium
 * Chrysidiastrum
 * Chrysoamphipyxis
 * Chrysoamphitrema
 * Chrysobotriella
 * Chrysocampanula
 * Chrysocapsa
 * Chrysocapsella
 * Chrysocapsopsis
 * Chrysochromulina
 * Chrysoclonium
 * Chrysococcocystis
 * Chrysococcus
 * Chrysocrinus
 * Chrysoculter
 * Chrysocystis
 * Chrysodendron
 * Chrysodesmis
 * Chrysodidymus
 * Chrysolepidomonas
 * Chrysolykos
 * Chrysomeris
 * Chrysonebula
 * Chrysonema
 * Chrysonephele
 * Chrysonephos
 * Chrysophaeum
 * Chrysopodocystis
 * Chrysopyxis
 * Chrysoreinhardia
 * Chrysosaccus
 * Chrysosphaera
 * Chrysosphaerella
 * Chrysostephanosphaera
 * Chrysothecopsis
 * Chrysothrix
 * Chrysothylakion
 * Chrysotila
 * Chrysotilos
 * Chrysowaernella
 * Chrysoxys
 * Chrysymenia
 * Chuniella
 * Chylocladia
 * Chytriodinium
 * Ciliaria
 * Ciliophrys
 * Circulodinium
 * Cirrulicarpus
 * Cistula
 * Citharistes
 * Cladhymenia
 * Cladochaete
 * Cladochroa
 * Cladodonta
 * Cladogirvanella
 * Cladogonium
 * Cladogramma
 * Cladomphalus
 * Cladonema
 * Cladophorella
 * Cladophyllum
 * Cladopyxis
 * Cladosiphon
 * Cladostephus
 * Cladostephus/algaebase
 * Cladothele
 * Cladurus
 * Clathromorphum
 * Claudea
 * Clautriavia
 * Claviclonium
 * Clavularia
 * Cleistosphaeridium
 * Clevamphora
 * Cleveia
 * Clevia
 * Cliftonaea
 * Climacidium
 * Climacodium
 * Climaconeis
 * Climacosira
 * Climacosorus
 * Climacosphenia
 * Clipeodinium
 * Closteriospira
 * Coccidinium
 * Coccochloris
 * Coccocladus
 * Coccolithites
 * Coccomonas
 * Cocconeiopsis
 * Cocconeis
 * Coccopedia
 * Coccophora
 * Coccotylus
 * Cochlodinium
 * Cochlosoma
 * Codiophyllum
 * Codoniella
 * Codonobotrys
 * Codonodendron
 * Codosiga
 * Coelarthrum
 * Coelocladia
 * Coeloclonium
 * Coelomoron
 * Coelosphaeriopsis
 * Coelosphaerium
 * Coelothrix
 * Coenobiodiscus
 * Coenochloris
 * Coenococcus
 * Coenogonium
 * Coenolamellus
 * Coilodesme
 * Colacium
 * Colacodasya
 * Colacodictyon
 * Colacolepis
 * Colaconema
 * Colacopsis
 * Coleodesmiopsis
 * Coleodesmium
 * Colletonema
 * Colliculoamphora
 * Collinsiellopsis
 * Collodictyon
 * Colteronema
 * Comasphaeridium
 * Cometes
 * Compositus
 * Compsonema
 * Compsopogon
 * Compsopogonopsis
 * Compsothamniella
 * Compsothamnion
 * Concentrodiscus
 * Conchocelis
 * Confervea
 * Congracilaria
 * Congregatocarpus
 * Conjugata
 * Conochaete
 * Conophyton
 * Conradia
 * Conradiella
 * Conradocystis
 * Constantinea
 * Contarinia
 * Coolia
 * Corallina
 * Corallophila
 * Corbisema
 * Cordosphaeridium
 * Cordylecladia
 * Corethron
 * Coriophyllum
 * Corisphaera
 * Corollithion
 * Coronastrum
 * Coronia
 * Coronodiscus
 * Coronosphaera
 * Corradoria
 * Cortinocornus
 * Corycus (alga)
 * Corymbellus
 * Corynocystis
 * Corynomorpha
 * Corynophlaea
 * Coryphidium
 * Corythodinium
 * Coscinodiscus
 * Coscinophaena
 * Coscinosira
 * Cosmaridium
 * Cosmiodiscus
 * Cosmioneis
 * Cosmoastrum
 * Costaria
 * Costatochloris
 * Costopyxis
 * Costularia
 * Cottoniella
 * Cotyledon (alga)
 * Coxia
 * Craspedocarpus
 * Craspedodiscus
 * Craspedolithus
 * Craspedopleura
 * Craspedoporus
 * Craspedotella
 * Crassapontosphaera
 * Crassicorbisema
 * Crassikamaena
 * Crassitegula
 * Crenalithus
 * Creswellia
 * Cretarhabdella
 * Cretarhabdus
 * Cribrokamaena
 * Cribroperidinium
 * Cribrosphaera
 * Cribrosphaerella
 * Cricolithus
 * Cricosphaera
 * Crinalium
 * Crinolina
 * Cristodiscus
 * Croatella
 * Crodella
 * Croftiella
 * Crossocarpus
 * Crossophialus
 * Crouania
 * Crouanophycus
 * Crucidenticula
 * Crucigloea
 * Cruciplacolithus
 * Cruoriella
 * Cryptella
 * Crypthecodinium
 * Cryptobia
 * Cryptochlora
 * Cryptochrysis
 * Cryptococcolithus
 * Cryptoglena
 * Cryptonemia
 * Cryptoperidiniopsis
 * Cryptopleura
 * Cryptosiphonia
 * Crystalia
 * Crystallolithus
 * Ctenosiphonia
 * Cubiculosporum
 * Cumagloia
 * Cumathamnion
 * Cuneatochara
 * Cuneolus
 * Curdiea
 * Cuspidothrix
 * Cussia
 * Cutleria
 * Cyanarcus
 * Cyanidioschyzon
 * Cyanidium
 * Cyanoarbor
 * Cyanobium
 * Cyanobotrys
 * Cyanocatena
 * Cyanocatenula
 * Cyanocomperia
 * Cyanocystis
 * Cyanoderma
 * Cyanodermatium
 * Cyanodictyon
 * Cyanogastrum
 * Cyanogranis
 * Cyanokybus
 * Cyanomastix
 * Cyanomonas
 * Cyanonephron
 * Cyanophanon
 * Cyanophora
 * Cyanoptyche
 * Cyanosaccus
 * Cyanosarcina
 * Cyanospira
 * Cyanostylon
 * Cyanotetras
 * Cyanothamnos
 * Cyanothece
 * Cyathobodo
 * Cyclagelosphaera
 * Cyclicargolithus
 * Cyclidiopsis
 * Cyclidium
 * Cycloites
 * Cyclonephelium
 * Cyclonexis
 * Cycloperfolithus
 * Cyclophora
 * Cycloplea
 * Cyclopsiella
 * Cyclosira
 * Cyclostephanopsis
 * Cyclotella
 * Cyclotrichium
 * Cyclotubicoalitus
 * Cylindralithus
 * Cylindrocapsopsis
 * Cylindrocarpus
 * Cylindrocystis
 * Cylindropyxis
 * Cylindrospermopsis
 * Cylindrospermum
 * Cylindrospira
 * Cylindrotheca
 * Cymathaere
 * Cymatiogalea
 * Cymatiosphaera
 * Cymatodiscus
 * Cymatogonia
 * Cymatoneis
 * Cymatonitzschia
 * Cymatopleura
 * Cymatosira
 * Cymatotheca
 * Cymbamphora
 * Cymbella
 * Cymbellonitzschia
 * Cymbellopsis
 * Cymbodinium
 * Cymbophora
 * Cymbopleura
 * Cymbosira
 * Cymososphaeridium
 * Cypellachaetes
 * Cyrtosphaera
 * Cystoclonium
 * Cystodinedria
 * Cystodinium
 * Cystophora (alga)
 * Cystosphaera
 * Cytridiochloris
 * Dactyliosolen
 * Dactylofusa
 * Daktylethra
 * Dalmatella
 * Dalmatogloia
 * Dandrelion
 * Danea
 * Danubia
 * Dasyangea
 * Dasycladus
 * Dasyclonium
 * Dasydiacrodium
 * Dasyella
 * Dasyphila
 * Dasyphloea
 * Dasyptilon
 * Dasysiphonia
 * Dasythamniella
 * Dateriocradus
 * Dawsoniella
 * Dawsoniocolax
 * Debarya
 * Debya
 * Decaisnella
 * Deflandrea
 * Delamarea
 * Delesseria
 * Delesseriopsis
 * Delisea
 * Delphineis
 * Dendrelion
 * Dendrella
 * Dendrymenia
 * Denticula
 * Denticulopsis
 * Derepyxis
 * Dermatocelis
 * Dermatochrysis
 * Dermatolithon
 * Dermocarpella
 * Dermocorynus
 * Dermonema
 * Desikacharyella
 * Desikaneis
 * Desmarestia
 * Desmithamnium
 * Desmocapsa
 * Desmogonium
 * Desmomastix
 * Desmosiphon
 * Desmotetra
 * Detonia
 * Detonula
 * Deucalion (alga)
 * Devaleraea
 * Dextradonator
 * Diachros
 * Diacronema
 * Diademoides
 * Diadesmis
 * Diadozygus
 * Diapse
 * Diatoma
 * Diatomella
 * Diatomosira
 * Dichomenis
 * Dichonema
 * Dichosporangium
 * Dichothrix
 * Dichotomaria
 * Dichotomococcus
 * Dickensoniaforma
 * Dickieia
 * Dicladia
 * Dicladiopsis
 * Dicoleon
 * Diconodinium
 * Dicranema
 * Dicrateria
 * Dicroerisma
 * Dicroglossum
 * Dictyastrum
 * Dictyocha
 * Dictyochlorella
 * Dictyochroa
 * Dictyococcites
 * Dictyococcus
 * Dictyocysta
 * Dictyolampra
 * Dictyomenia
 * Dictyoneis
 * Dictyoneurum
 * Dictyopteris
 * Dictyopyxidia
 * Dictyopyxis
 * Dictyosiphon
 * Dictyosphaeriopsis
 * Dictyota
 * Dictyothamnion
 * Dictyotidium
 * Dictyotopsis
 * Dictyurus
 * Didymochrysis
 * Didymocladon
 * Didymosphenia
 * Didymothrix
 * Diexallophasis
 * Digenea (alga)
 * Digeneopsis
 * Dilsea
 * Dimastigamoeba
 * Dimeregramma
 * Dimeregrammopsis
 * Dimerosira
 * Dimidiata
 * Dinamoebidium
 * Dinastridium
 * Dinematomonas
 * Dinenympha
 * Dinobryon
 * Dinoclonium
 * Dinococcus
 * Dinofurcula
 * Dinogymnium
 * Dinophysis
 * Dinopodiella
 * Dinopyxis
 * Dinosphaera
 * Dinothrix
 * Diomphala
 * Dioriticamonas
 * Dioxys
 * Diplochaete
 * Diplochloris
 * Diplocladia
 * Diplocolon
 * Diplomenora
 * Diploneis
 * Diplopelta
 * Diplopsalis
 * Diplopsalopsis
 * Diplostauron
 * Diplostromium
 * Diplothamnion
 * Diplura (alga)
 * Dipterocladia
 * Dipterocolax
 * Dipterosiphonia
 * Disciferium
 * Discocelis
 * Discodinium
 * Discodiscus
 * Discoites
 * Discolithina
 * Discolithus
 * Disconeis
 * Discoplastis
 * Discoplea
 * Discosira
 * Discosphaera
 * Discosporangium
 * Discostella
 * Disiphonia
 * Disphacella
 * Dissodinium
 * Dissodium
 * Distephanopsis
 * Distephanosira
 * Distichanthes
 * Distigma
 * Distigmopsis
 * Distrionella
 * Distromium
 * Ditria
 * Ditylum
 * Diversocallis
 * Dixoniella
 * Docidium
 * Dogelodinium
 * Dohrniella
 * Doidyx
 * Dolichodinium
 * Dolichoscelis
 * Doliocatella
 * Donezella
 * Donkinia
 * Dorella
 * Dossetia
 * Dotyophycus
 * Doxodasya
 * Drepanotheca
 * Drewiana
 * Drewsandria
 * Drilosiphon
 * Druggidium
 * Druridgea
 * Druridgia
 * Duboscquella
 * Duboscquodinium
 * Ducellieria
 * Dudresnaya
 * Dumontia
 * Durinskia
 * Duthiophycus
 * Dylakosoma
 * Dzensia
 * Ebria
 * Ebriopsis
 * Ecballocystis
 * Ecdysichlamys
 * Echinaria
 * Echinoceras
 * Echinocoleum
 * Echinodiscus
 * Echinophycus
 * Echinopyxis
 * Echinosphaerella
 * Echinosporangium
 * Echinothamnion
 * Ecklonia
 * Eckloniopsis
 * Ectocarpus
 * Ectochaete
 * Ectodictyon
 * Ectophora
 * Ectosperma
 * Egmontodinium
 * Egregia
 * Ehrenbergiulva
 * Eirmodesmus
 * Eisenackidium
 * Eisenia (alga)
 * Elachista
 * Elachistiella
 * Eleutherospora
 * Ellipsagelosphaera
 * Ellipsoidictyum
 * Ellipsolithus
 * Ellipsoplacolithus
 * Embryocola
 * Emersonia
 * Emiliania
 * Empselium
 * Enantiocladia
 * Enchelis
 * Encyonema
 * Encyonopsis
 * Encyothalia
 * Endarachne
 * Endictya
 * Endochloridion
 * Endocladia
 * Endodinium
 * Endogenes
 * Endogenia
 * Endoplura
 * Endoscrinium
 * Endosigma
 * Endosiphonia
 * Endosira
 * Endosperma
 * Endostauron
 * Enelittosiphonia
 * Enigma (alga)
 * Ensiculifera
 * Enteronia
 * Entocladia
 * Entocolax (alga)
 * Entoderma
 * Entodesmis
 * Entodictyon
 * Entogonia
 * Entomogaster
 * Entomosigma
 * Entonema
 * Entophysalis
 * Entopyla
 * Entosiphon
 * Entosphaeroides
 * Entothrix
 * Entransia
 * Eolimna
 * Eoplectonema
 * Epicladia
 * Epicystis
 * Epigloeosphaera
 * Epilithia
 * Epimastopora
 * Epipellis
 * Epiphalaina
 * Epiphloea
 * Episporium
 * Epithelion
 * Epithema
 * Epithemia
 * Epulo
 * Ercegovicia
 * Ericiolus
 * Ericsonia
 * Ernstiella
 * Errerella
 * Erythrocladia
 * Erythroclonium
 * Erythrocolon
 * Erythrocystis
 * Erythrodermis
 * Erythroglossum
 * Erythronaema
 * Erythropeltis
 * Erythrophyllum
 * Erythropsidinium
 * Erythrostachys
 * Erythrotrichia
 * Erythrymenia
 * Escharisphaeridia
 * Esoptrodinium
 * Estiastra
 * Ethelia
 * Ethmodiscus
 * Ethmorhabdus
 * Ettliella
 * Euastropsis
 * Eucampia
 * Eucapsis
 * Euceratoneis
 * Eucheuma
 * Eudesme
 * Euglenamorpha
 * Euglenomonas
 * Euglenopsis
 * Eumeridion
 * Eunophora
 * Eunotia
 * Eunotiopsis
 * Eunotogramma
 * Eupleuria
 * Eupodiscus
 * Eupogodon
 * Eupoikilofusa
 * Eupterotrum
 * Euptilocladia
 * Euptilota
 * Eurhabdus
 * Eurossia
 * Eurydinium
 * Euryomma (alga)
 * Eusphaerella
 * Euspiros
 * Eustigmatos
 * Eutetramorus
 * Eutreptia
 * Eutreptiella
 * Exallosorus
 * Exanthemachrysis
 * Excentrochloris
 * Excentron
 * Excentrosphaera
 * Exilicrusta
 * Exochosphaeridium
 * Exophyllum
 * Extubocellulus
 * Ezo (alga)
 * Falcatella
 * Falcomonas
 * Falcula
 * Falkenbergiella
 * Fallacia
 * Farlowia
 * Fauchea
 * Faucheocolax
 * Faucheopsis
 * Feditia
 * Feldmannia
 * Feldmannodora
 * Feldmannophycus
 * Fenestrella
 * Fernandinella
 * Fernandosiphonia
 * Fibrocapsa
 * Fibrocysta
 * Filisphaera
 * Filodinium
 * Fischera
 * Fischerella
 * Fischerellopsis
 * Fistulifera
 * Flabellaria (alga)
 * Flabellochara
 * Flabellonema
 * Flahaultia
 * Flexibiddulphia
 * Flintiella
 * Florella
 * Florenciella
 * Florisphaera
 * Flosculosphaera
 * Fluitomonas
 * Fogedia
 * Foliactiniscus
 * Fontigonium
 * Fortiea
 * Fosliea
 * Fosliella
 * Fossula
 * Fottea
 * Fotterella
 * Fragilaria
 * Fragilariella
 * Fragilariforma
 * Fragilariopsis
 * Fragilidium
 * Franceia
 * Fremya
 * Fremyella
 * Frickea
 * Friedaea
 * Frikkiella
 * Fromea
 * Frustulia
 * Fryeella
 * Fryxelliella
 * Furcellaria
 * Furcilla
 * Fusola
 * Fusotheca
 * Gaarderia
 * Gaillardotella
 * Gaillonia (alga)
 * Gainia
 * Galaxaura
 * Galdieria
 * Galeidinium
 * Gambierdiscus
 * Ganonema
 * Garciamyxa
 * Gardneriella
 * Gardnerula
 * Gardodinium
 * Gartnerago
 * Garwoodia
 * Gattya
 * Gayella
 * Gayliella
 * Geissleria
 * Geitleria
 * Geitleribactron
 * Geitlerinema
 * Gelatia
 * Gelatinaria
 * Gelidiocolax
 * Gelidiopsis
 * Gelinaria
 * Geminigera
 * Geminocarpus
 * Gemmichara
 * Gemmiphora
 * Geniculus
 * Geonettia
 * Georgiella
 * Gephyria
 * Ghoshia
 * Gibsmithia
 * Giffenia
 * Giffordia
 * Gigantea
 * Gigantochloris
 * Gigartina
 * Ginnania
 * Giraudia
 * Giraudyopsis
 * Girodella
 * Gladiolithus
 * Gladiopsis
 * Glaphyrocysta
 * Glaphyrymenia
 * Glaucocystis
 * Glaucocystopsis
 * Glauconema
 * Glaucosphaera
 * Glaucospira
 * Glenobotrydion
 * Glenodinium
 * Gleseria
 * Gliscolithus
 * Globulaesphaeridium
 * Glochiococcus
 * Gloeoactinium
 * Gloeobotrys
 * Gloeocapsopsis
 * Gloeochaete
 * Gloeochlamys
 * Gloeochloris
 * Gloeochrysis
 * Gloeocystopsis
 * Gloeomonas
 * Gloeonema
 * Gloeophycus
 * Gloeoplax
 * Gloeopodium
 * Gloeoskene
 * Gloeosphaeridium
 * Gloeotaenium
 * Gloeothece
 * Gloeotrichia
 * Gloiocladia
 * Gloiocolax
 * Gloioderma
 * Gloiodictyon
 * Gloionema
 * Gloiopeltis
 * Gloiophloea
 * Gloiophyllis
 * Gloiosaccion
 * Gloiosiphonia
 * Gloiothamnion
 * Gloiotrichia
 * Gloiotrichus
 * Glorioptychus
 * Glossomastix
 * Glossophora
 * Glyphodesmis
 * Glyphodiscus
 * Gobia
 * Gobichara
 * Gochteodinia
 * Gochtodinium
 * Golovenkinia
 * Gomontiella
 * Gomphocaloneis
 * Gomphocymbella
 * Gomphogramma
 * Gomphoneis
 * Gomphonella
 * Gomphonema
 * Gomphonemopsis
 * Gomphonenopsis
 * Gomphonitzschia
 * Gomphopleura
 * Gomphoseptatum
 * Gomphosphaeria
 * Gomphosphenia
 * Gomphotheca
 * Gonatoblaste
 * Gonatogenia
 * Gonatonema
 * Gondisphaeridium
 * Gonimocolax
 * Gonimophyllum
 * Gonioceros
 * Goniochloris
 * Goniodoma
 * Goniomonas
 * Goniosphaeridium
 * Goniothecium
 * Goniotrichopsis
 * Goniotrichum
 * Gonodia
 * Gononema
 * Gontrania
 * Gonyaulacysta
 * Gonyaulax
 * Gonyostomum
 * Gordoniella
 * Gorgonisphaeridium
 * Gossleriella
 * Gotoius
 * Gracilariocolax
 * Gracilariophila
 * Gracilariopsis
 * Graesiella
 * Grallatoria
 * Grambastichara
 * Grammatonema
 * Grammatophora
 * Grammephora
 * Grammitella
 * Grammonema
 * Granomarginata
 * Grantarhabdus
 * Granulocystis
 * Granulocystopsis
 * Granuochloris
 * Grateloupia
 * Grateloupiocolax
 * Greuetodinium
 * Griffithsia
 * Grinnellia
 * Groentvedia
 * Grovea
 * Grovesichara
 * Grunoviella
 * Grunowia
 * Grunowiella
 * Grymaia
 * Guerinea
 * Guillardia
 * Guinardia
 * Guiryella
 * Gulsonia
 * Gunflintia
 * Gutwinskiella
 * Gymnochlora
 * Gymnocystodinium
 * Gymnogongrus
 * Gymnophycus
 * Gymnosorus
 * Gymnothamnion
 * Gynogonadinium
 * Gyrocylindrus
 * Gyrodinium
 * Gyrodiscus
 * Gyrogona
 * Gyromitus
 * Gyropaigne
 * Gyropandorus
 * Gyroptychus
 * Gyrosigma
 * Haemescharia
 * Hafniasphaera
 * Haidadinium
 * Halarachnion
 * Halerica
 * Halicalyptra
 * Halichrysis
 * Halicnide
 * Halicoccus
 * Halidrys
 * Haligenia
 * Halionyx
 * Haliptilon
 * Hallasia
 * Halochloa
 * Halochlorella
 * Halodictyon
 * Halodinium
 * Haloglossum
 * Halomicronema
 * Halonema
 * Halopappus
 * Halophilodinium
 * Halopithys
 * Haloplegma
 * Halopteris
 * Halorhipis
 * Halorhiza
 * Halosacciocolax
 * Halosaccion
 * Halosia
 * Halosiphon
 * Halostylodinium
 * Halothamnion
 * Halothrix
 * Halurina
 * Halurus
 * Halydictyon
 * Hamatusia
 * Hamelella
 * Handeliella
 * Handmannia
 * Hannaea
 * Hannaites
 * Hanowia
 * Hantzschia
 * Hantzschiopsidea
 * Hapalidium
 * Hapalosiphon
 * Hapalospongidion
 * Haplocladium
 * Haplodasya
 * Haplodinium
 * Haplogloia
 * Haplosiphon
 * Haplospora
 * Haplozoon
 * Hapsocysta
 * Haraldia
 * Haraldiophyllum
 * Haramonas
 * Harpochytrium
 * Harrisichara
 * Harveyella
 * Haslea
 * Hassallia
 * Hawaiia (alga)
 * Hayaster
 * Haynaldella
 * Haynaldia
 * Haynaldiella
 * Hecatonema
 * Hediniella
 * Hedophyllum
 * Hedraeophysa
 * Hedstroemia
 * Heibergia
 * Heimiochrysis
 * Heleochloris
 * Heliapsis
 * Helicopedinella
 * Helicopontosphaera
 * Helicosphaera
 * Helikotropis
 * Heliochrysis
 * Heliodiscus
 * Heliolithus
 * Heliopelta
 * Heliorthus
 * Helisella
 * Helkesimastix
 * Helladosphaera
 * Helminthiopsis
 * Helminthocladia
 * Helminthogloea
 * Helminthopsidella
 * Helminthopsis
 * Helminthora
 * Helmyton
 * Hematodinium
 * Hemiaulus
 * Hemichloris
 * Hemicystodinium
 * Hemidiscus
 * Hemieutreptia
 * Hemineura
 * Hemiptychus
 * Hemiselmis
 * Hemisphaerella
 * Hemitoma
 * Hemizoster
 * Hendeya
 * Hennedya
 * Henseniella
 * Henshawia
 * Herbacea
 * Hercotheca
 * Heribaudia
 * Heribaudiella
 * Heringia
 * Hermesinella
 * Hermesinum
 * Heromphala
 * Heroneis
 * Herpetomonas
 * Herpochaeta
 * Herpochondria
 * Herpodiscus
 * Herponema
 * Herposiphonia
 * Herpothamnion
 * Herpyzonema
 * Herreramyxa
 * Hesperophycus
 * Hesslandia
 * Heterobractum
 * Heterocalycina
 * Heterocampa
 * Heterocapsa
 * Heterochloris
 * Heterocladia
 * Heterococcus
 * Heterocyanococcus
 * Heterodasya
 * Heterodendron
 * Heteroderma
 * Heterodesmus
 * Heterodictyon
 * Heterodinium
 * Heterodoxia
 * Heterogloea
 * Heterogonium
 * Heterolagynion
 * Heteroleibleinia
 * Heteromastix
 * Heteromphala
 * Heteroneis
 * Heteropedia
 * Heterophycus
 * Heteroptilon
 * Heteroralfsia
 * Heterorhabdus
 * Heterosaundersella
 * Heterosiphonia
 * Heterostephania
 * Heterostroma
 * Heterothamnion
 * Heterothrichopsis
 * Heterotrichella
 * Hibberdia
 * Hideophyllum
 * Hiemalomonas
 * Hildenbrandia
 * Hillea
 * Himandactylius
 * Himanthalia
 * Himantidium
 * Himantosoma
 * Himantothallus
 * Hincksia
 * Hindakochloris
 * Hippodonta
 * Hirome
 * Hirsutithallia
 * Histiona
 * Histioneis
 * Histiophysis
 * Hizikia
 * Hofmannia
 * Hollenbergia
 * Holmesia
 * Holmsella
 * Holococcolithophora
 * Holotrichia
 * Homalodiscus
 * Homeostrichus
 * Homeostroma
 * Hommersandia
 * Hommersandiella
 * Homoeocladia
 * Homoeoptyche
 * Homoeostrichus
 * Homoeothrix
 * Homozygosphaera
 * Hormathonema
 * Hormidiella
 * Hormidiopsis
 * Hormidiospora
 * Hormiscia
 * Hormophora
 * Hormophysa
 * Hormoscilla
 * Hormosira
 * Hormospora
 * Hormothamnion
 * Hormothece
 * Hornibrookina
 * Hornichara
 * Horodiscus
 * Hortobagyiella
 * Humbugodiscus
 * Hummbrella
 * Hummia
 * Husseya
 * Hustedtia
 * Hustedtiella
 * Hyaliella
 * Hyalobrachion
 * Hyalocardium
 * Hyalochlorella
 * Hyalococcus
 * Hyalocylix
 * Hyalodictya
 * Hyalodiscopsis
 * Hyalodiscus
 * Hyalogonium
 * Hyalopoda
 * Hyalopyxis
 * Hyaloraphidium
 * Hyalosiphonia
 * Hyalosira
 * Hyalosynedra
 * Hyalotrochus
 * Hydraea
 * Hydroclathrus
 * Hydrococcus
 * Hydrocoleum
 * Hydrocoryne
 * Hydrogastrum
 * Hydrolapatha
 * Hydrolinum
 * Hydrolithon
 * Hydropuntia
 * Hydrosera
 * Hydrosilicon
 * Hydrosirella
 * Hydrosolen
 * Hydrurus
 * Hyella
 * Hylobiblium
 * Hymenena
 * Hymenocladia
 * Hymenocladiopsis
 * Hymenoclonium
 * Hymenomonas
 * Hypheothrix
 * Hyphomorpha
 * Hypnea
 * Hypneocolax
 * Hypoglossum
 * Hystrichodinium
 * Hystrichokolpoma
 * Hystrichosphaera
 * Hystrichosphaeridium
 * Hystrichosphaeropsis
 * Hystrichostrogylon
 * Ichthyocercus
 * Ichthyodinium
 * Ichthyodontum
 * Iconella
 * Ikebea
 * Ilea
 * Ilsteria
 * Imantonia
 * Imbatodinium
 * Impagidinium
 * Implicaria
 * Impluviculus
 * Inactis
 * Incisoria
 * Indodinium
 * Indosphaera
 * Ineffigiata
 * Inkyuleea
 * Inoderma
 * Inomeria
 * Insilella
 * Interfilum
 * Interthamnion
 * Invertocysta
 * Involucrana
 * Ionia (alga)
 * Iridaea
 * Iridophycus
 * Irtugovia
 * Irvinea
 * Isabelidinium
 * Isabottia
 * Isactis
 * Ishige
 * Islandinium
 * Isochrysis
 * Isocystis
 * Isodiscus
 * Isophlis
 * Isoselmis
 * Isthmiella
 * Isthmochloron
 * Isthmoplea
 * Itonoa
 * Iyengaria
 * Iyengariella
 * Iyengariomonas
 * Izziella
 * Jaagia
 * Jaagichlorella
 * Jaaginema
 * Jadwigia
 * Jakoba
 * Janczewskia
 * Jania
 * Janischia
 * Jantinella
 * Jaoa
 * Jaoniella
 * Jeannerettia
 * Johannesbaptistia
 * Johnsonicodium
 * Jolyna
 * Jomonlithus
 * Jonssonia
 * Jousea
 * Juranyiella
 * Kakabekia
 * Kallosphaeridium
 * Kallymenia
 * Kallymeniopsis
 * Kalyptea
 * Kamera
 * Kannoa
 * Kansodinium
 * Kappaphycus
 * Karlodinium
 * Katagnymene
 * Katahiraia
 * Katodinium
 * Kentrodiscus
 * Kentrosiga
 * Kephyrion
 * Keppenodinium
 * Keratococcus
 * Keratophora
 * Keriochlamys
 * Keriosphaera
 * Kerkis (alga)
 * Kermatia
 * Kidoa
 * Kildinella
 * Kintarosiphonia
 * Kintokiocolax
 * Kirchneria
 * Kirchneriellosaccus
 * Kisselevia
 * Kisseleviella
 * Kisselovia
 * Kittonia
 * Kjellmaniella
 * Klebsormidium
 * Kleithriasphaeridium
 * Klinodiscus
 * Kneuckeria
 * Kobayasiella
 * Kofoidinium
 * Koinopodion
 * Koizumia
 * Kolderupia
 * Kolkwitziella
 * Komarekia
 * Komma
 * Komvophoron
 * Korschpalmella
 * Kozloviella
 * Kraftia
 * Krasskella
 * Kreagra
 * Kremastochrysis
 * Kremastochrysopsis
 * Krybolopteris
 * Kryptoperidinium
 * Ktenodiscus
 * Kuckuckia
 * Kuemmerlea
 * Kuetzingia
 * Kuetzingiella
 * Kurogia
 * Kurogiella
 * Kuzminia
 * Kvaleya
 * Kybotion
 * Kylindrocysta
 * Kylinia
 * Kyliniella
 * Kyrtuthrix
 * Labellicula
 * Lacrymasphaera
 * Lacrymorphus
 * Lagenella
 * Lagenula
 * Lagynion
 * Laingia
 * Laminariocolax
 * Laminarionema
 * Laminolithus
 * Lampriscus
 * Lamprotediscus
 * Lamprothamnium
 * Lancineis
 * Lanternosphaeridium
 * Lapideacassis
 * Lasiothalia
 * Latifascia
 * Latochara
 * Lauderia
 * Lauderiopsis
 * Laurencia
 * Laurenciocolax
 * Laurenciophila
 * Lauterborniella
 * Leachiella
 * Leathesia
 * Leberidocysta
 * Lebessphaera
 * Leblondiella
 * Lebouraia
 * Leibleinia
 * Leiofusa
 * Leioplanktona
 * Leiosphaeridia
 * Lejeunecysta
 * Lejeunia
 * Lejolisia
 * Lembergia
 * Lemmermanniella
 * Lennoxia
 * Lenormandia
 * Leonardosia
 * Lepidochrysis
 * Lepidodinium
 * Lepidodiscus
 * Lepochromulina
 * Lepocinclis
 * Lepraria
 * Leptochaete
 * Leptocylindrus
 * Leptocystinema
 * Leptodiscus
 * Leptofauchea
 * Leptoklonion
 * Leptolyngbya
 * Leptomonas
 * Leptonema (alga)
 * Leptonematella
 * Leptophyllis
 * Leptorima
 * Leptoscaphos
 * Leptosiphonia
 * Leptosomia
 * Leptothrix
 * Lessardia
 * Lessoniopsis
 * Lesueuria
 * Letestuinema
 * Letterstedtia
 * Leudugeria
 * Leukapsis
 * Leukochrysis
 * Leuvenia
 * Leveillea
 * Levringia
 * Levringiella
 * Leyanella
 * Liagora
 * Liagoropsis
 * Liagorothamnion
 * Licmosphenia
 * Liebmannia
 * Ligulatium
 * Limnothrix
 * Lindavia
 * Lingulodinium
 * Lioloma
 * Lioneis
 * Liostephania
 * Liparogyra
 * Liradiscus
 * Liriogramma
 * Lisitzinia
 * Lissodinium
 * Litharchaeocystis
 * Lithobotrys
 * Lithocampe
 * Lithocapsa
 * Lithococcus
 * Lithoderma
 * Lithodesmioides
 * Lithodesmium
 * Lithomyxa
 * Lithonema
 * Lithophyllum
 * Lithoporella
 * Lithothamnion
 * Lithothamnium
 * Lithothrix
 * Lithraphidites
 * Litosiphon
 * Litosphaeridium
 * Lobarzewskya
 * Lobocolax
 * Lobocystis
 * Lobodiscus
 * Lobophora
 * Lobospira
 * Lochmium
 * Loefgrenia
 * Lomathamnion
 * Lomentaria
 * Longinata
 * Lopezmyxa
 * Lophocladia
 * Lophodiacrodium
 * Lophodinium
 * Lophopodium
 * Lophosiphonia
 * Lophosphaeridium
 * Lophothalia
 * Lophothamnion
 * Lophotheca
 * Lophurella
 * Loriella
 * Lotharella
 * Lucianorhabdoites
 * Lucianorhabdus
 * Luciella
 * Lukinia
 * Lundiella
 * Lunella
 * Lunulina
 * Lutherella
 * Luticola
 * Lychnothamnus
 * Lyngbya (alga)
 * Lyngbyea
 * Lyngbyopsis
 * Lyramula
 * Lyrella
 * Lysicyclia
 * Macrodictyon
 * Macromastix
 * Macrora
 * Macrothamnion
 * Maedleriella
 * Maedlerisphaera
 * Malaconema
 * Malleochloris
 * Malleodendron
 * Mallomonas
 * Mallomonopsis
 * Maluina
 * Mammaria
 * Mammidion
 * Mammula
 * Manchudinium
 * Manguinea
 * Mannsia
 * Mantellum
 * Maranhites
 * Marchesettia
 * Margaritoxon
 * Margaritum
 * Marginaria
 * Marginariella
 * Marginisporum
 * Marinichlorella
 * Marionella
 * Maripelta
 * Markalius
 * Marrocanium
 * Marssoniella
 * Marsupiogaster
 * Martensia
 * Martyana
 * Masakia
 * Masakiella
 * Masloviporidium
 * Masonophycus
 * Mastigocladopsis
 * Mastigocladus
 * Mastigocoleopsis
 * Mastigocoleus
 * Mastigosphaera
 * Mastocarpus
 * Mastodiscus
 * Mastogloia
 * Mastogonia
 * Mastoneis
 * Mastophoropsis
 * Masudaphycus
 * Matanomadhia
 * Mateola
 * Matteia
 * Mayamaea
 * Mazoyerella
 * Mazzaella
 * Medeiothamnion
 * Mediaria
 * Meiodiscus
 * Meiourogonyaulax
 * Melanema
 * Melanocolax
 * Melanodinium
 * Melanosiphon
 * Melanothamnus
 * Melanthalia
 * Melastictis
 * Melchersiela
 * Melobesia
 * Melodinium
 * Melonavicula
 * Melosira
 * Membraneis
 * Membranella
 * Membranilarnacia
 * Membranoptera
 * Mendicodinium
 * Menoidiomonas
 * Menoidium
 * Meredithia
 * Meretrosulus
 * Meridiocolax
 * Meridion
 * Meringosphaera
 * Merismogloea
 * Meristiella
 * Meristosolen
 * Merodinium
 * Merotricha
 * Mesasterias
 * Mesocena
 * Mesochara
 * Mesogloia
 * Mesogloiopsis
 * Mesopedinella
 * Mesoporos
 * Mesospora
 * Mesotaenium
 * Metadoga
 * Metagoniolithon
 * Metamastophora
 * Metamorphe
 * Metanema
 * Metaphalacroma
 * Metapolytoma
 * Meuniera
 * Meyerella
 * Meyeriella
 * Michaelsarsia
 * Micracanthodinium
 * Micraloa
 * Micrampulla
 * Micrhystridium
 * Microceratium
 * Microchaete
 * Microchara
 * Microcladia
 * Microcoelia
 * Microcolax
 * Microcoleus
 * Microcoryne
 * Microcostatus
 * Microcrocis
 * Microcystiopsis
 * Microcystis
 * Microdictyon (alga)
 * Microgongrus
 * Microneis
 * Microorbis
 * Micropeuce
 * Microphyllum
 * Micropoa
 * Microrhabdulinus
 * Microrhinus
 * Microsiphona
 * Microspodiscus
 * Microspongium
 * Microstaurus
 * Microstigma
 * Microtabella
 * Microtheca
 * Microthoe
 * Microzonia
 * Mikamiella
 * Mikrosyphar
 * Minidiscus
 * Minutocellulus
 * Minutocellus
 * Miosira
 * Miraltia
 * Misceomarginatus
 * Mischococcus
 * Mitcheldeania
 * Mitralifer
 * Moelleria
 * Moisseevia
 * Monadodendron
 * Monallantus
 * Monasella
 * Monema (alga)
 * Monobrachia
 * Monocercomonas
 * Monocercomonoides
 * Monochrysis
 * Monocilia
 * Monocis
 * Monocrodium
 * Monodopsis
 * Monodus
 * Monogramma
 * Monomarginatus
 * Monomorphina
 * Monopsia
 * Monosporus
 * Montanoa
 * Montemaria
 * Mortensenia
 * Mougeotia
 * Mougeotiopsis
 * Mucosphaera
 * Muderongia
 * Muelleria
 * Muelleriella
 * Muelleriopsis
 * Multipartis
 * Multiplicisphaeridium
 * Multisiphonia
 * Multispirochara
 * Munarinus
 * Munieria
 * Muriellopsis
 * Murrayella
 * Murrayellopsis
 * Myagropsis
 * Mycacanthococcus
 * Mychodea
 * Mychodeophyllum
 * Mycinema
 * Mycochrysis
 * Mycoidea
 * Mycotetraedron
 * Myelophycus
 * Myochloris
 * Myriactis
 * Myriactula
 * Myriocladia
 * Myriodesma
 * Myriogloea
 * Myrionema
 * Myrionemopsis
 * Myrmecia (alga)
 * Myrsidium
 * Mysticella
 * Myurococcus
 * Myxobaktron
 * Myxochloris
 * Myxochrysis
 * Myxococcoides
 * Myxodinium
 * Myxohyella
 * Myxonema
 * Myxonemopsis
 * Myxosarcina
 * Naccaria
 * Naegeliella
 * Nancythalia
 * Nannoceratopsis
 * Nannochloropsis
 * Nannoturba
 * Nanochlorum
 * Nanoneis
 * Nanopera
 * Naunema
 * Nautocapsa
 * Nautococcus
 * Navicella
 * Naviculadicta
 * Naviculopsis
 * Navisolenia
 * Neevea
 * Neglectella
 * Neglectellopsis
 * Neidiopsis
 * Neidium
 * Nemacystus
 * Nemalion
 * Nemalionopsis
 * Nemastoma
 * Nematochrysis
 * Nematochrysopsis
 * Nematodinium
 * Nematophora
 * Nematoplaca
 * Nematoplata
 * Nematosphaeropsis
 * Nemegtichara
 * Nemoderma
 * Neoabbottiella
 * Neobrunia
 * Neocalyptrella
 * Neochara
 * Neochiastozygus
 * Neocrepidolithus
 * Neocystis
 * Neodelphineis
 * Neodenticula
 * Neodiatoma
 * Neodilsea
 * Neofragilaria
 * Neogoniolithon
 * Neograya
 * Neohalosacciocolax
 * Neoholmesia
 * Neohuttonia
 * Neohypophyllum
 * Neomonospora
 * Neonaviculopsis
 * Neonema
 * Neophormidium
 * Neoptilota
 * Neoralfsia
 * Neorhodomela
 * Neosiphonia
 * Neosphaera
 * Neosphaerochloris
 * Neosynedra
 * Neotenophycus
 * Nephrochlamys
 * Nephrochloris
 * Nephrococcus
 * Nephrodiella
 * Nephrolithus
 * Nephroneis
 * Nereia
 * Nereodictyon
 * Nereoginkgo
 * Nesaea (alga)
 * Nesophila
 * Netrium
 * Neurocaulon
 * Neurymenia
 * Newhousia
 * Nexosispinum
 * Nienburgella
 * Nienburgia
 * Nitella
 * Nitellopsis
 * Nitophyllum
 * Nitzschiella
 * Nitzschiopsidea
 * Nizamuddinia
 * Nizymenia
 * Nodeana
 * Nodosochara
 * Nodosoclavator
 * Norrissia
 * Nostochopsis
 * Noszkya
 * Notheia
 * Nothoceratium
 * Nothocladus
 * Nothogenia
 * Nothyocha
 * Notophycus
 * Notosolenus
 * Novilla
 * Nucellosphaeridium
 * Nullipora
 * Nupela
 * Nwynea
 * Oblea
 * Obtusochara
 * Occisucysta
 * Ochromonas
 * Ochrosphaera
 * Ochrostylon
 * Ochtodes
 * Octacanthium
 * Octactis
 * Octaedryxium
 * Octocyclus
 * Octopodorhabdus
 * Octosporiella
 * Ocularia
 * Odontella
 * Odonthalia
 * Odontidium
 * Odontodiscus
 * Odontotropis
 * Oerstedtia
 * Oestrupia
 * Oikomonas
 * Okamurina
 * Okedenia
 * Okkolithus
 * Oligochaetophora
 * Oligocladella
 * Oligosphaeridium
 * Olisthodiscus
 * Olivamonas
 * Ollicola
 * Oltmannsia
 * Oltmannsiella
 * Omphalopelta
 * Omphalophyllum
 * Omphalopsis
 * Omphalotheca
 * Oncosaccus
 * Oncosphenia
 * Onkonema
 * Onslowia
 * Onychocolax
 * Oocardium
 * Oocystaenium
 * Oocystella
 * Oocystidium
 * Oocystopsis
 * Oolithotus
 * Oonephris
 * Opephora
 * Opephoropsis
 * Opephyllum
 * Operculodinium
 * Ophiaster
 * Ophidocampa
 * Ophidocladus
 * Ophiocytium
 * Opuntiella
 * Orastrum
 * Orcasia
 * Orculifilum
 * Orimanthis
 * Ornithocercus
 * Orthoneis
 * Orthoseira
 * Orthosira
 * Orthosorus
 * Orthotropis
 * Ortonella
 * Orygmatosphaeridium
 * Oscillaria
 * Oscillatoriopsis
 * Oshitea
 * Osmundaria
 * Osmundea
 * Ossiella
 * Ostiophyllum
 * Ostreopsis
 * Ottavianus
 * Ovillaria
 * Ovoidinium
 * Ovoidites
 * Oxyneis
 * Oxyphysis
 * Oxyrrhis
 * Oxytoxum
 * Ozophora
 * Ozothallia
 * Ozotobrachion
 * Pachychaeta
 * Pachydictyon
 * Pachydinium
 * Pachymenia
 * Pachymeniopsis
 * Pachyneis
 * Pachysphaera
 * Padinella
 * Padinopsis
 * Palaeoanacystis
 * Palaeocystodinium
 * Palaeohydrococcus
 * Palaeolyngbya
 * Palaeomicrocystis
 * Palaeoperidinium
 * Palaeophalacroma
 * Palaeopontosphaera
 * Palaeoscytonema
 * Palaeostomocystis
 * Palaeotrigonium
 * Palaeowestiellopsis
 * Palaiosphaeridium
 * Palatinella
 * Palikiella
 * Palisada
 * Palmaria (alga)
 * Palmella
 * Palmellococcus
 * Palmellocystis
 * Palmellosphaerium
 * Palmerina
 * Palmnickia
 * Palmoclathrus
 * Palmophyllum
 * Paltonophora
 * Palusphaera
 * Pandorella
 * Pantocsekia
 * Pantoneura
 * Papenfussiella
 * Papenfussiomonas
 * Papiliocellulus
 * Pappia
 * Pappomonas
 * Papposphaera
 * Paracannopilus
 * Paracapsa
 * Parachaetetes
 * Parachrysidalis
 * Paracolonnella
 * Paraconophyton
 * Paracuneatochara
 * Paradesmus
 * Paradictyocha
 * Paragoniolithon
 * Paralemanea
 * Parallela
 * Paramastix
 * Paramesocena
 * Paraortonella
 * Parapedinella
 * Paraplectonema
 * Parapolytoma
 * Pararchaeomonas
 * Paraspora
 * Parebriopsis
 * Parenchymorpha
 * Pareodinia
 * Parhabdolithus
 * Parlibellus
 * Parmidium
 * Parthaea
 * Parthasarathiella
 * Parvicorbicula
 * Parviphycus
 * Parvocavatus
 * Parvocysta
 * Pascherella
 * Pascheriella
 * Pascherina
 * Pascherinema
 * Patenocarpus
 * Pauliella
 * Paulsenella
 * Paulsilvella
 * Pavillardia
 * Peckichara
 * Peckisphaera
 * Pectinella
 * Pedinella
 * Pedinomonadopsis
 * Pedinopera
 * Pelagococcus
 * Pelagocystis
 * Pelagomonas
 * Pelagothrix
 * Peleophycus
 * Peltasta
 * Peltomonas
 * Pelvetia
 * Pelvetiopsis
 * Pentalamina
 * Pentapharsodinium
 * Pentapodiscus
 * Peponia
 * Peragalla
 * Peragallia
 * Peragalloella
 * Peranema
 * Percivalia
 * Pericystis
 * Peridiniella
 * Peridiniopsis
 * Perikladosporon
 * Perinema
 * Periphykon
 * Periphyllophora
 * Periptera
 * Peripteropsis
 * Perischelia
 * Perispermon
 * Perispermum
 * Perisporochnus
 * Perisseiasphaeridium
 * Peristephania
 * Perithalia
 * Perithamnion
 * Perithyra
 * Perizonium
 * Permocalculus
 * Perone
 * Peronia
 * Peroniella
 * Peroniopsis
 * Perrya
 * Petalodinium
 * Petalomonas
 * Petalonema
 * Petalonia
 * Peterfiella
 * Petitia
 * Petrarhabdus
 * Petroderma
 * Petrodictyon
 * Petroglossum
 * Petroneis
 * Petrosiphon
 * Petrospongium
 * Petrovanella
 * Pexisperma
 * Peyssonnelia/algaebase
 * Phacelocarpus
 * Phacodiscus
 * Phacomonas
 * Phacomyxa
 * Phacus
 * Phaeaster
 * Phaeobotrys
 * Phaeocolax
 * Phaeocystis
 * Phaeodactylum
 * Phaeodermatium
 * Phaeogloea
 * Phaeomonas
 * Phaeoplaca
 * Phaeosaccion
 * Phaeoschizochlamys
 * Phaeosiphonia
 * Phaeosiphoniella
 * Phaeosphaera
 * Phaeostroma
 * Phaeostromatella
 * Phaeostrophion
 * Phaeothamnion
 * Phaeurus
 * Phanulithus
 * Pharyngoglossa
 * Phasgonon
 * Phaxantha
 * Pheopolykrikos
 * Phialediscus
 * Phialonema
 * Phitycolax
 * Phitymophora
 * Phloiocaulon
 * Phlyctaenia
 * Phlyctis
 * Phoeococcus
 * Phoracis
 * Phormidiochaete
 * Phormidium
 * Phragmonema
 * Phrix
 * Phycastrum
 * Phycocelis
 * Phycodrina
 * Phycodrys
 * Phycophilia
 * Phyllactidium
 * Phyllariochloris
 * Phyllariopsis
 * Phyllocardium
 * Phyllodictyocha
 * Phyllogigas
 * Phyllophora
 * Phyllospora
 * Phyllotylus
 * Phyllymenia
 * Physcophora
 * Physocytium
 * Physomonas
 * Physotris
 * Phytelis
 * Phythelios
 * Phytodinium
 * Picarola
 * Picconiella
 * Picophagus
 * Pihiella
 * Pikea
 * Pileidinium
 * Pilgeria
 * Pilidiocystis
 * Piliferosphaera
 * Pilinia
 * Pinguiochrysis
 * Pinguiococcus
 * Pinnaria
 * Pinnatiphycus
 * Pinnulariosigma
 * Pinnunavis
 * Piriformachara
 * Pithyopsis
 * Pityophykos
 * Placentophora
 * Placoma
 * Placoneis
 * Placophora
 * Placorhombus
 * Placosphaera
 * Plagiodinium
 * Plagiodiscus
 * Plagiogramma
 * Plagiogrammopsis
 * Plagiolemma
 * Plagioselmis
 * Plagiospora
 * Plagiotropis
 * Planctococcus
 * Planktocyanocapsa
 * Planktolyngbya
 * Planktoniella
 * Planktosphaerella
 * Planktothrichoides
 * Planktothrix
 * Planktotricoides
 * Planodinium
 * Platoma
 * Platychara
 * Platychrysella
 * Platychrysis
 * Platyclinia
 * Platymenia
 * Platysiphon
 * Platysiphonia
 * Platythalia
 * Platythamnion
 * Playaensis
 * Plectoderma
 * Plectodinium
 * Plectonema
 * Plectrophora
 * Pleonosporium
 * Pleromonas
 * Pleurasiga
 * Pleurastrosarcina
 * Pleuroblepharidella
 * Pleurocapsa
 * Pleurochloridella
 * Pleurochloris
 * Pleurochrysis
 * Pleurocladia
 * Pleurocyclos
 * Pleurocyclus
 * Pleurodesmium
 * Pleurodiscina
 * Pleurogaster
 * Pleuromastix
 * Pleuromonas
 * Pleuroneis
 * Pleurophycus
 * Pleuropterum
 * Pleurosigma
 * Pleurosiphonia
 * Pleurostaurum
 * Pleurostichidium
 * Pleurothamnion
 * Plicatodiscus
 * Pliocaenicus
 * Plocamiocolax
 * Plocamium
 * Ploeotia
 * Ploeotila
 * Ploiaria
 * Plumaria
 * Plumariella
 * Plumariopsis
 * Plumosigma
 * Pneophyllum
 * Pocillomonas
 * Podamphoropsis
 * Podiscus
 * Podocapsa
 * Podochrysis
 * Podocystis
 * Pododiscus
 * Podohedra
 * Podolampas
 * Podorhabdus
 * Podosira
 * Podosphenia
 * Pogoneis
 * Pogonophorella
 * Pogotrichum
 * Poikilofusa
 * Polarella
 * Polonosphaeridium
 * Polyasterias
 * Polyblepharides
 * Polycavernosa
 * Polyceratium
 * Polycerea
 * Polychaetophora
 * Polychlamydum
 * Polycladia
 * Polycoelia
 * Polycoma
 * Polycoryne
 * Polycrater
 * Polyedriella
 * Polyedrium
 * Polygonalium
 * Polygonifera
 * Polygoniochloris
 * Polygonium
 * Polyides
 * Polykrikos
 * Polykyrtos
 * Polylepidomonas
 * Polymorpha
 * Polymyscos
 * Polymyxus
 * Polyneura
 * Polyneurella
 * Polyneuropsis
 * Polyopes
 * Polypodochrysis
 * Polypodoidea
 * Polyschidea
 * Polysphaera
 * Polysphaeridium
 * Polystrata
 * Polythrix
 * Polyzonia
 * Pomatodinium
 * Pomphodiscus
 * Ponticella
 * Pontodiscus
 * Pontosphaera
 * Porannulus
 * Poretzkia
 * Porguenia
 * Poricalyptra
 * Poritectolithus
 * Porochara
 * Porochrysis
 * Porocyclia
 * Porodiscus
 * Porolithon
 * Porosira
 * Porostauros
 * Porostylon
 * Porosularia
 * Porpeia
 * Porphyrea
 * Porphyrella
 * Porphyridium
 * Porphyroglossum
 * Porphyropsis
 * Porphyrosiphon
 * Porphyrostromium
 * Porterinema
 * Portieria
 * Potamodiscus
 * Poteriochroomonas
 * Praecymatosira
 * Praeepithemia
 * Praethalassiosiropsis
 * Prasinochloris
 * Prasiola/algaebase
 * Pratulasphaera
 * Predaea
 * Predaeopsis
 * Preperidinium
 * Prescottiella
 * Primorivularia
 * Prinsius
 * Prionitis
 * Priscogalea
 * Prismatella
 * Proboscia
 * Proboscineis
 * Prochloron
 * Prochlorothrix
 * Progonoia
 * Prolixosphaeridium
 * Pronoctiluca
 * Prorostaurus
 * Proschkinia
 * Proselachista
 * Proshkinia
 * Prosoaulax
 * Protaspis
 * Protectocarpus
 * Proteomonas
 * Proterendothrix
 * Proterythropsis
 * Proteucylindrus
 * Protoaceromonas
 * Protoceratium
 * Protochrysis
 * Protocryptomonas
 * Protodinium
 * Protokeelia
 * Protokuetzingia
 * Protoleiosphaeridium
 * Protoodinium
 * Protoperidinium
 * Protoraphis
 * Protosphaeridium
 * Provasoliella
 * Prymnesium
 * Psammococconeis
 * Psammodictyon
 * Psammodiscus
 * Psammosynedra
 * Psammothidium
 * Pseliodinium
 * Psephotaxus
 * Pseudanabaena
 * Pseudauliscus
 * Pseudoactiniscus
 * Pseudoamphiprora
 * Pseudoanemonia
 * Pseudoaulacodiscus
 * Pseudoaulacosira
 * Pseudobangia
 * Pseudobodo
 * Pseudobranchioglossum
 * Pseudobumilleriopsis
 * Pseudocapsa
 * Pseudocerataulus
 * Pseudoceratium
 * Pseudochantransia
 * Pseudocharaciopsis
 * Pseudochlorangium
 * Pseudochlorococcum
 * Pseudochorda
 * Pseudococcomyxa
 * Pseudocoscinodiscus
 * Pseudocryptomonas
 * Pseudodendromonas
 * Pseudodichotomosiphon
 * Pseudodictyon
 * Pseudodictyoneis
 * Pseudodimerogramma
 * Pseudodiploneis
 * Pseudoencyonema
 * Pseudoeunotia
 * Pseudogirvanella
 * Pseudogloiophloea
 * Pseudogomphonema
 * Pseudogoniochloris
 * Pseudoguinardia
 * Pseudogymnosolen
 * Pseudohimantidium
 * Pseudohyalodiscus
 * Pseudokephyrion
 * Pseudokirchneriella
 * Pseudolaingia
 * Pseudolatochara
 * Pseudolessonia
 * Pseudoleyanella
 * Pseudolithoderma
 * Pseudolithophyllum
 * Pseudomastogloia
 * Pseudomicromarsupium
 * Pseudomoellerina
 * Pseudonavicula
 * Pseudoncobyrsa
 * Pseudonitophylla
 * Pseudonostoc
 * Pseudopedinella
 * Pseudopedinomonas
 * Pseudoperanema
 * Pseudoperonia
 * Pseudopfiesteria
 * Pseudophormidium
 * Pseudophycodrys
 * Pseudopodosira
 * Pseudopolyedriopsis
 * Pseudoprostratum
 * Pseudopyxilla
 * Pseudoquadrigula
 * Pseudorhododiscus
 * Pseudorocella
 * Pseudorutilaria
 * Pseudoschizomeris
 * Pseudoscinaia
 * Pseudoscytonema
 * Pseudosolenia
 * Pseudosphaerocystis
 * Pseudospora
 * Pseudostaurastrum
 * Pseudostaurosira
 * Pseudostephanodiscus
 * Pseudostictodiscus
 * Pseudosyncrypta
 * Pseudosynedra
 * Pseudotetraspora
 * Pseudotetrastrum
 * Pseudothecadinium
 * Pseudotriceratium
 * Psilosiphon
 * Psilothallia
 * Psygmatella
 * Pteridomonas
 * Pterigospermum
 * Pterochondria
 * Pterocladia
 * Pterocladiella
 * Pterocladiophila
 * Pterocladiopsis
 * Pteroncola
 * Pterosiphonia
 * Pterospermopsis
 * Pterothamnion
 * Pterotheca
 * Pterygophora
 * Ptilocladia
 * Ptilocladiopsis
 * Ptilonia
 * Ptilophora
 * Ptilopogon
 * Ptilota
 * Ptilothamnion
 * Ptilothamnionopsis
 * Ptychodiscus
 * Pugetia
 * Pulchrasphaera
 * Pulvinaster
 * Pulvinia
 * Pulvinularia
 * Punctaria
 * Punctastriata
 * Purpureofilum
 * Pycnothamnion
 * Pylaiella/algaebase
 * Pyramichlamys
 * Pyramidochrysis
 * Pyramidodinium
 * Pyramidomonas
 * Pyrgodiscus
 * Pyrgupyxis
 * Pyrocystis
 * Pyrodinium
 * Pyrophacus
 * Pyrophyllon
 * Pyxidicula
 * Pyxilla
 * Qinghaichara
 * Quadrichloris
 * Quadricoccus
 * Quaternariella
 * Raciborskiella
 * Radaisia
 * Radialiplicata
 * Radiathamnion
 * Radicilingua
 * Radiocystis
 * Radiopalma
 * Radioramus
 * Radiosphaera
 * Ralfsia
 * Ramicrusta
 * Ramsaya
 * Rancia
 * Raphidiella
 * Raphidiopsis
 * Raphidium
 * Raphidodiscus
 * Raphidonema
 * Raphidonemopsis
 * Raskyaechara
 * Rattrayella
 * Rayssiella
 * Rebecca (alga)
 * Reicheltia
 * Reimeria
 * Reimerothrix
 * Reinboldia
 * Reinboldiella
 * Reingardia
 * Reinhardtites
 * Reinschiella
 * Renfrewia
 * Renouxia
 * Reptataxis
 * Requejomyxa
 * Retecapsa
 * Reticulobotrys
 * Reticulocaulis
 * Reticulofenestra
 * Reticulosphaera
 * Retisphaeridium
 * Retusochara
 * Rexia
 * Rhabdium
 * Rhabdogloea
 * Rhabdolekiskus
 * Rhabdolithina
 * Rhabdolithus
 * Rhabdomonas
 * Rhabdonema
 * Rhabdonia
 * Rhabdosira
 * Rhabdosphaera
 * Rhadinocladia
 * Rhamnochrysis
 * Rhaphidium
 * Rhaphidogloea
 * Rhaphidophora (alga)
 * Rhaphiophorasphaera
 * Rhaphococcus
 * Rhaphoneis
 * Rhinodinium
 * Rhinomonas
 * Rhipidodendron
 * Rhipidophora
 * Rhipidothamnion
 * Rhizaspis
 * Rhizaster
 * Rhizochloris
 * Rhizochrysis
 * Rhizolamiella
 * Rhizolekane
 * Rhizonotia
 * Rhizoochromonas
 * Rhizophydium
 * Rhizophyllum
 * Rhizopogonia
 * Rhizosolenia
 * Rhizothallus
 * Rhodachlya
 * Rhodaphanes
 * Rhodella
 * Rhodocallis
 * Rhodochaete
 * Rhodochortonopsis
 * Rhodococcus (alga)
 * Rhododictyon
 * Rhododiplobia
 * Rhododraparnaldia
 * Rhodoglossum
 * Rhodogorgon
 * Rhodolachne
 * Rhodomela
 * Rhodomelopsis
 * Rhodonema
 * Rhodopeltis
 * Rhodophyllis
 * Rhodophysema
 * Rhodophysemopsis
 * Rhodoplax
 * Rhodoptilum
 * Rhodosaccion
 * Rhodosorus
 * Rhodospora
 * Rhodostichus
 * Rhodothamniella
 * Rhodymenia
 * Rhodymeniocolax
 * Rhoicosigma
 * Rhoicosphenia
 * Rhoikoneis
 * Rhombocystis
 * Rhomboidella
 * Rhopalodia
 * Rhynchomonas
 * Rhynchopus
 * Rhynchopyxis
 * Richelia
 * Richteriella
 * Riedelia (alga)
 * Rimaria
 * Riquetophycus
 * Rissoella
 * Rivularia
 * Rivulariopsis
 * Robinsetta
 * Rocella
 * Rodriguezella
 * Roperia
 * Rosaria
 * Roscoffia
 * Rosenvingea
 * Rossiella
 * Rossithidium
 * Roundia
 * Rouxia
 * Rucinolithus
 * Rufusia
 * Rufusiella
 * Rugulopteryx
 * Russellia
 * Rutilaria
 * Rutilariopsis
 * Rylandsia
 * Rytiphlaea
 * Sabulodinium
 * Sacconema
 * Sacheria
 * Saharifusa
 * Sahlingia
 * Salpingoeca
 * Sameioneis
 * Sangirellum
 * Sarcinochlamys
 * Sarcinochrysis
 * Sarcoderma
 * Sarcodia
 * Sarcodiotheca
 * Sarcomenia
 * Sarconema
 * Sarcothalia
 * Sarcotrichia
 * Sarfatiella
 * Sargassopsis
 * Saturnella
 * Saundersella
 * Sauvageaugloia
 * Sawamuraia
 * Scaberia
 * Scaenophora
 * Scagelia
 * Scageliopsis
 * Scagelonema
 * Scagelothamnion
 * Scalptrum
 * Scampanella
 * Scapha
 * Scaphodinium
 * Scaphularia
 * Sceptroneis
 * Sceptronema
 * Schilleriella
 * Schillingia
 * Schimittia
 * Schimmelmannia
 * Schimperiella
 * Schizochlaenion
 * Schizochytriodinium
 * Schizocladia
 * Schizocystia
 * Schizodictyon
 * Schizoglossum
 * Schizogonium
 * Schizonema
 * Schizoneura
 * Schizosiphon
 * Schizostauron
 * Schizothrix
 * Schizymenia
 * Schmidleinema
 * Schmidtia
 * Schmidtiella
 * Schmitziella
 * Schottera
 * Schroederella
 * Schuettia
 * Schuettiella
 * Schumanniana
 * Sciadophycus
 * Scinaia
 * Sciurothamnion
 * Sclernax
 * Sclerococcus
 * Scoliodiscus
 * Scolioneis
 * Scoliopleura
 * Scoliotropis
 * Scoresbya
 * Scoresbyella
 * Scotiella
 * Scotiellocystis
 * Scotinosphaera
 * Scotlandella
 * Scriniodinium
 * Scrippsiella
 * Scyphosphaera
 * Scytellum
 * Scytochloria
 * Scytomonas
 * Scytonema
 * Scytonematopsis
 * Scytosiphon
 * Scytothalia
 * Scytothamnus
 * Seagriefia
 * Sebdenia
 * Secallia
 * Seguenzaea
 * Seirococcus
 * Seirospora
 * Selenochloris
 * Selenoderma
 * Selenodictyon
 * Selenopemphix
 * Selenophaea
 * Selenosphaerium
 * Seletonella
 * Sellaphora
 * Sembeya
 * Seminavis
 * Semiorbis
 * Semnocarpa
 * Semseyia
 * Sentusidinium
 * Septamesocena
 * Septorella
 * Seribiscutum
 * Serpenomonas
 * Serraticardia
 * Sestosoma
 * Shepleya
 * Sheshukovia
 * Siderocelis
 * Siderocystopsis
 * Siderodendron
 * Sieminskia
 * Sigmatella
 * Siliquarius
 * Siluania
 * Silvetia
 * Simonsenia
 * Simonseniella
 * Sinaiella
 * Sinamonas
 * Sinophysis
 * Sinosiphonia
 * Siphomonas
 * Siphononema
 * Siphonosphaera
 * Siphorus
 * Siphytus
 * Sirocladium
 * Sirocoleum
 * Sirodotia
 * Sirogonium
 * Sirosiphon
 * Skeletonella
 * Skeletonema
 * Skeletonemopsis
 * Skiadosphaera
 * Skiagia
 * Sklerochlamys
 * Skujaella
 * Skvortzoviella
 * Smithora
 * Smithsoniella
 * Snowella
 * Sokolovia
 * Solenia
 * Solenicola
 * Solenodinium
 * Solentia
 * Solieria
 * Solisphaera
 * Solium
 * Sollasites
 * Sommierella
 * Sonderella
 * Sonderopelta
 * Sonderophycus
 * Soranthera
 * Sorapion
 * Sorella
 * Sorellocolax
 * Soropediastrum
 * Sparlingia
 * Spatangidium
 * Spatoglossum
 * Spatulodinium
 * Spelaeopogon
 * Spencerella
 * Spermatochnus
 * Spermipole
 * Spermothamnion
 * Sphacelaria
 * Sphacella
 * Sphaceloderma
 * Sphaenosiphon
 * Sphaeranthera
 * Sphaeraspis
 * Sphaerastrum
 * Sphaerellopsis
 * Sphaeridiothrix
 * Sphaeripara
 * Sphaerobotrys
 * Sphaerobryon
 * Sphaerocalyptra
 * Sphaerocarpus
 * Sphaerocavum
 * Sphaerochara
 * Sphaerococcus
 * Sphaerodinium
 * Sphaeroeca
 * Sphaerophora
 * Sphaerophycus
 * Sphaerosorus
 * Sphaerospermum
 * Sphaerotermia
 * Sphaerotrichia
 * Sphaerozyga
 * Sphaleromantis
 * Sphenella
 * Sphenolithus
 * Sphenomonas
 * Sphenoneis
 * Sphenophora
 * Sphenosira
 * Sphinctocystis
 * Sphondylothamnion
 * Sphynctolethus
 * Spinasphaera
 * Spiniferites
 * Spiniferodinium
 * Spiniferomonas
 * Spinigera
 * Spinivinculum
 * Spinocosmarium
 * Spinodiscus
 * Spinosira
 * Spiraulax
 * Spirhymenia
 * Spirillopsis
 * Spirirestris
 * Spirocladia
 * Spirocoleus
 * Spirodiscus
 * Spirogonium
 * Spiromonas
 * Spirophycus
 * Spirotaenia
 * Spirulina (alga)
 * Splachnidium
 * Spondylomorum
 * Spongioplastidium
 * Spongites
 * Spongocarpus
 * Spongoclonium
 * Spongodium
 * Spongomonas
 * Spongomorpha
 * Spongonema
 * Sporocanthus
 * Sporochnema
 * Sporochnus
 * Sporochonema
 * Sporocladus
 * Sporoglossum
 * Sporolithon
 * Sporotetras
 * Spumella
 * Spyridia
 * Spyridiocolax
 * Squamolithon
 * Stanieria
 * Starria
 * Staurocladia
 * Staurogenia
 * Staurogramma
 * Staurolithites
 * Stauromatonema
 * Stauroneis
 * Stauronella
 * Staurophanum
 * Staurophora
 * Staurosigma
 * Staurosira
 * Staurosirella
 * Staurotropis
 * Stegastrum
 * Stegengaea
 * Stelladiscus
 * Stellarima
 * Stellatochara
 * Stelliferidium
 * Stenocodon
 * Stenogramme
 * Stenoneis
 * Stenopeltis
 * Stenopterobia
 * Stenopterotia
 * Stephanochara
 * Stephanocoelium
 * Stephanoeca
 * Stephanogonia
 * Stephanoon
 * Stephanoptera
 * Stephanopyxis
 * Stephanosira
 * Stereocladon
 * Stereococcus
 * Stereothalia
 * Sterrocladia
 * Stichochrysis
 * Stichogloea
 * Stichosiphon
 * Stichospora
 * Stichostaura
 * Stichothamnion
 * Stictocyclus
 * Stictodesmis
 * Stictodiscella
 * Stictodiscus
 * Stictoneis
 * Stictophyllum
 * Stictosiphonia
 * Stictosporum
 * Stictyosiphon
 * Stifftia
 * Stigmaphora
 * Stigonema
 * Stilophora
 * Stilopsis
 * Stiphrosphaeridium
 * Stipitochloris
 * Stipitochrysis
 * Stipitococcus
 * Stipitoporos
 * Stirnia
 * Stoechospermum
 * Stoermeria
 * Stokesiella
 * Stokeyia
 * Stomatochone
 * Stomatochroon
 * Stomochara
 * Storeatula
 * Stoschia
 * Stoschiella
 * Stradnerlithus
 * Stragularia
 * Strangulonema
 * Streblocladia
 * Streblonema
 * Streblonemopsis
 * Strelnikovia
 * Strepsithalia
 * Streptommion
 * Streptonema
 * Streptophyllopsis
 * Striaria
 * Striatella
 * Striatocellina
 * Striatomarginis
 * Striatotheca
 * Stromatocarpus
 * Strombomonas
 * Stschapovia
 * Sturtgrovea
 * Sturtiella
 * Stylobiblium
 * Stylochromonas
 * Stylochrysalis
 * Stylococcus
 * Stylodinium
 * Styloneis
 * Stylonema
 * Stylosphaeridiella
 * Stylosphaeridium
 * Stypocaulon
 * Stypopodium
 * Subathua
 * Subsilicea
 * Suhria
 * Sulcochrysis
 * Sullivania
 * Surculosphaeridium
 * Suringaria
 * Suringariella
 * Suriraya
 * Surirella
 * Swarchewskiella
 * Sycamina
 * Sycidium
 * Syltodinium
 * Symbiococcum
 * Symbiomonas
 * Symblepharis
 * Symbolophora
 * Symphyocarpus
 * Symphyocladia
 * Symphyonemopsis
 * Symphyosiphon
 * Symplassosphaeridium
 * Symploca
 * Symplocastrum
 * Sympodophyllum
 * Sympodothamnion
 * Synarthrophyton
 * Synchroma
 * Syncyclia
 * Syndendrium
 * Syndetocystis
 * Syndetoneis
 * Syndinium
 * Synedra
 * Synedropsis
 * Synedrosphenia
 * Synura
 * Synuropsis
 * Syracolithus
 * Syracosphaera
 * Syringidium
 * Syringocolax
 * Syringoderma
 * Systematophora
 * Systephania
 * Szechenyia
 * Tabularia
 * Tabulina
 * Taenioma
 * Takanoa
 * Talarodictyon
 * Talaroneis
 * Tanakaella
 * Tanyosphaeridium
 * Taonia
 * Tapeinodasya
 * Tapinothrix
 * Tariccrodium
 * Tasmanites
 * Tayloriella
 * Taylorophycus
 * Tectatodinium
 * Tectochara
 * Teichorhabdus
 * Teilingia
 * Teleaulax
 * Telonema
 * Temachium
 * Temnogametum
 * Temnogyra
 * Temperea
 * Temperella
 * Tenaciphyllum
 * Terebraria
 * Tertiariopsis
 * Tessellaria
 * Tethysicodium
 * Tetrablepharis
 * Tetrachaeta
 * Tetrachloris
 * Tetrachrysis
 * Tetracyclus
 * Tetradinium
 * Tetraedriella
 * Tetragonidium
 * Tetragramma
 * Tetraktis
 * Tetralithoides
 * Tetralithus
 * Tetramerosphaera
 * Tetramphora
 * Tetranephris
 * Tetraparma
 * Tetrapion
 * Tetraplektron
 * Tetrapodiscus
 * Tetrapodorhabdus
 * Tetrarcus
 * Tetrasporella
 * Tetrasporidium
 * Tetrasporopsis
 * Tetrathamnion
 * Tetratoma
 * Tetratomococcus
 * Tetreutreptia
 * Thalassioneis
 * Thalassionema
 * Thalassiophyllum
 * Thalassiophysa
 * Thalassiosira
 * Thalassiosiropsis
 * Thalassiothrix
 * Thalassiphora
 * Thalassodendron
 * Thallochrysis
 * Thalpophila
 * Thamnoclonium
 * Thamnophyllis
 * Thaumaleorhabdium
 * Thaumatella
 * Thaumatodinium
 * Thaumatomastix
 * Thaumatonema
 * Thaurilens
 * Thecadiniopsis
 * Thecadinium
 * Thecamoeba
 * Thelesphaera
 * Thermosynechococcus
 * Thiersteinia
 * Thiochaete
 * Thompsodinium
 * Thoracomonas
 * Thoracosphaera
 * Thorakochloris
 * Thorosphaera
 * Thumia
 * Thuretella
 * Thuretellopsis
 * Thuretia
 * Tiarophora
 * Tibiella
 * Tichocarpus
 * Tielingella
 * Tiffaniella
 * Tikvahiella
 * Tilopteris
 * Tinocladia
 * Titanophora
 * Titanophycus
 * Togula
 * Tokidadendron
 * Tokidaea
 * Tolypella
 * Tolypellopsis
 * Tolypiocladia
 * Tolypothrix
 * Tomaculopsis
 * Tomaculum
 * Torodinium
 * Tortilaria
 * Tortitaenia
 * Tortularia
 * Tovellia
 * Toxarium
 * Toxonidea
 * Toxosira
 * Trachychloron
 * Trachycystis (alga)
 * Trachydiscus
 * Trachyneis
 * Trachynema
 * Trachysphenia
 * Trailliella
 * Trapezopentus
 * Trematocarpus
 * Trematosphaeridium
 * Trepomonas
 * Triaulacias
 * Tribonema
 * Triceratium
 * Trichidium
 * Trichloridella
 * Trichoceras
 * Trichocoleus
 * Trichodinium
 * Trichogloea
 * Trichogloeopsis
 * Trichormus
 * Trichothyra
 * Trichotoxon (alga)
 * Tricleocarpa
 * Trigenea
 * Trigonaspis
 * Trigonidiella
 * Trigonium
 * Trigonomonas
 * Trilobatum
 * Trinacria (alga)
 * Trinovantedinium
 * Triparma
 * Triplastrum
 * Triposolenia
 * Tripterion
 * Triquetrorhabdulus
 * Trithamnion
 * Trochiliscus
 * Trochosira
 * Trochosiropsis
 * Tropidoscyphus
 * Tropidosiphonus
 * Truania
 * Truncatulus
 * Tryblionella
 * Tryblioptychus
 * Trypanochloris
 * Tryponema
 * Tschestnovia
 * Tsengia
 * Tsengiella
 * Tubaformis
 * Tuberculodinium
 * Tubiella
 * Tubulariella
 * Tumulopsis
 * Tuomeya
 * Turbochara
 * Turnerella
 * Turrilithus
 * Turrisphaera
 * Tursiocola
 * Tussetia
 * Tychonema
 * Tyleiophora
 * Tylocolax
 * Tylotopalla
 * Tylotus
 * Ulnaria
 * Ulonema
 * Ulotrichopsis
 * Ululania
 * Ulvella
 * Umbellosphaera
 * Umbilicosphaera
 * Umezakia
 * Uncinisphaera
 * Undariella
 * Undariopsis
 * Undatella
 * Undatodiscus
 * Uniplanarius
 * Upothema
 * Urceolus
 * Uredo
 * Urnella
 * Uroglena
 * Urosolenia
 * Utriculidium
 * Uva (alga)
 * Uvella
 * Vacuolaria
 * Vagalapilla
 * Vaginaria
 * Valensiella
 * Vallacerta
 * Vanheurckia
 * Vanhoeffenia
 * Vanvoorstia
 * Variramus
 * Vaucheria
 * Vaughaniella
 * Vekshinella
 * Velatocarpus
 * Veleroa
 * Verdigellas
 * Verosphacela
 * Verrucaria
 * Verrucophora
 * Veryhachium
 * Vesicophycus
 * Vesillarius
 * Vickersia
 * Virgatasporites
 * Vischeria
 * Voukiella
 * Vulcanisphaera
 * Waernia
 * Waerniella
 * Waldoia
 * Wangichara
 * Warnowia
 * Warrenia
 * Watznaueria
 * Webervanbossea
 * Weeksia
 * Weissflogia
 * Wellheimia
 * Westellopsis
 * Westiella
 * Westiellopsis
 * Wetherbeella
 * Wetzeliella
 * Whidbeyella
 * Wigwamma
 * Willeella
 * Wilsonaea
 * Wiseorhabdus
 * Woelkerlingia
 * Wollastoniella
 * Wollea
 * Woloszynskia
 * Wolskyella
 * Womersleya
 * Womersleyella
 * Woronichinia
 * Woronichiniella
 * Wrangelia
 * Wrightiella
 * Wurdemannia
 * Xainzanella
 * Xandarodinium
 * Xanthiopsis
 * Xanthiopyxis
 * Xanthodiscus
 * Xanthonema
 * Xanthophycomonas
 * Xanthosiphonia
 * Xenicodinium
 * Xenococcus
 * Xenotholos
 * Xiphophora
 * Xystotheca
 * Yalisphaeridium
 * Yamadaella
 * Yamadaia
 * Yamadaphycus
 * Yatabella
 * Yendonia
 * Yonagunia
 * Yonedaella
 * Yoshidaia
 * Yoshidaphycus
 * Zachariasia
 * Zanardinia
 * Zeacarpa
 * Zellera
 * Zeugrhabdotus
 * Zinovaea
 * Zonaria (alga)
 * Zonariophila
 * Zonosphaeridium
 * Zonotrichites
 * Zosterocarpus
 * Zotheca
 * Zygnema
 * Zygnemopsis
 * Zygoceros
 * Zygodiscus
 * Zygogonium
 * Zygolithus
 * Zygoselmis
 * Zygosphaera
 * Zymurgia