TYPE SPECIES

TYPE SPECIES OF GENERA (GENERITYPES) INCLUDED IN THESE PAGES
AND (WHERE REPORTED) DESIGNATION OF SEQUENCED TYPE MATERIAL




Genus (a)

Type species (b)

Found in cluster (c, d, f)

Sequenced
type material





Acaryochloridopsis

Holotype species: Acaryochloridopsis arrabidensis
Hentschke, F.O.Oliveira & J.Morais, 2024. Homotypic synonym: Pseudoacaryochloris arrabidensis Hentschke, F.O.Oliveira & J.Morais (in de Oliveira & al. 2024: 5),
nom. illeg.

8.2.1B (3)

LEGE 16640

Acaryochloris

Holotype species: Acaryochloris marina
Miyashita et Chihara 2003: 1249

8.2.3A (6)

MBIC11017

Aegeococcus

Holotype species: Aegeococcus anagnostidisi
Konstantinou et Gkelis 2020: 7

9.2.1A (1), 9.2.1B (1)

TAU-MAC 0815

Aerofilum

Holotype species: Aerofilum fasciculatum
Chakraborty et Mukherjee 2021: 182

6.2.29 (3)

AP3b

Aerosakkonema

Holotype species: Aerosakkonema funiforme
Nanda Kyaw Thu et Watanabe 2012: 675

3.2.2 (4)

Lao26

Aetokthonos

Holotype species: Aetokthonos hydrillicola
Wilde et Johansen 2014: 247

1.17.1 (4), 1.17.3 (2)

CCALA 1050

Affixifilum

Holotype species: Affixifilum floridanum
Lefler, Berthold et Laughinghouse 2021: 99

5.2.1.3 (3)

BLCCM61

Ahomia

Holotype species: Ahomia kamrupensis
Sagarika Pal & Prashant Singh 2024: 390

1.9.4I (1)

ASM11-­PS

Albertania

Holotype species: Albertania skiophila
Zammit 2018: 483

6.2.11A (2), 6.2.11B (3)

SA373/Zammit 2014

Alborzia

Holotype species: Alborzia kermanshahica
Nowruzi et Soares 2021: 8

Poor quality sequence, not included

CCC1399-­b

Aliinostoc

Holotype species: Aliinostoc bakau
Bagchi, Dubey et P. Singh 2023: 1; validated by
Merican et al. 2023

1.3.4E(1)

USMNA

Aliterella

Holotype species: Aliterella atlantica
Rigonato et al. 2016: 2859

3.4.1 (1)

CENA595

Alkalinema

Holotype species: Alkalinema pantanalense
Vieira Vaz et al. 2015: 302

6.3.22 (2)

CENA528

Allocoleopsis

Holotype species: Allocoleopsis franciscana
Moreira-Fernandes, Giraldo-Silva, D. Roush
et Garcia-Pichel 2021: 1575

3.1.10A (1)

PCC 7113

Almyronema

Holotype species: Almyronema epifaneia
A.R. Roy & J. Mukherjee 2024: 93, 94

6.1.8A (3)

S6

Altericista

Holotype species: Altericista lacusladogae
Averina, Polyakova, Senatskaya et Pinevich 2021: 1526

6.2.27C (2)

CALU 1127

Amazoninema

Holotype species: Amazoninema brasiliense
Genuário, de Souza, Monteiro, Sant'Anna et Melo
2020: 1442

6.1.12 (4)

CMAA1602

Amazonocrinis

Holotype species: Amazonocrinis nigriterrae
Alvarenga et al. 2021: 6

1.9.4A (1), 1.9.4C (1)

CENA67

Ammassolinea

Holotype species: Ammassolinea attenuata
Hasler, Dvorák, Poulícková & Casamatta 2014: 242

3.2.4 (5)

UPOC 64/2013

Amphiheterocytum

Holotype species: Amphiheterocytum lacustre
Sant'Anna et al. 2018: 212

1.2.3D (2)

CCIBt 3622

Anabaena

Holotype species: Anabaena oscillarioides
Bory ex Bornet et Flahault 1886: 233

1.1.1M (2), 1.2.5A (1), 1.10.1 (1)


Anabaenopsis

Lectotype species: Anabaenopsis elenkinii
V.V. Miller 1923: 125; designated in Geitler, L. (1942)

1.3.2B (1), 1.3.2C (7)

CCIBt1059

Anagnostidinema

Holotype species: Anagnostidinema pseudacutissimum
(Kufferath) Strunecký, Bohunická, Johansen
& Komárek 2017: 119

5.1.9.1A (5)

CCALA 150

Anathece

Holotype species: Anathece clathrata
(West & G.S.West) Komárek, Kastovsky &
Jezberová 2011: 321

7.1.1K (1)


Ancylothrix

Holotype species: Ancylothrix rivularis
M.D. Martins et L.H.Z. Branco 2016: 2402

2.2.2 (3)

8PC

Annamia

Holotype species: Annamia toxica
Nguyen 2013: 34

5.1.7.7 (1)


Anthocerotibacter

Holotype species: Anthocerotibacter panamensis
Li 2021: e3

11.2.2 (1)

C109

Apatinema

Holotype species: Apatinema mutabilis
Davydov 2022: 12

6.3.19 (1)

KPABG 610041

Aphanizomenon

Lectotype species: Aphanizomenon flosaquae
Ralfs ex Bornet et Flahault 1886: 241; designated in
Kircher, O. (1898)

1.1.1A (4), 1.1.1L (7)


Aphanocapsa

Holotype species: Aphanocapsa parietina
(Nägeli ex Kützing) Nägeli 1849: 52

none


Aphanothece

Holotype species: Aphanothece microscopica
Nägeli
1849: 59

5.1.4.6 (1)


Argonema

Holotype species: Argonema galeatum
Skoupý et Dvořák 2022: 2

3.2.7A (5), bacterial outgroup (1)

A003/A1

Arizonema

Holotype species: Arizonema commune
Moreira-Fernandes, Giraldo-Silva, D. Roush
et Garcia-Pichel
2021: 1576

3.1.9D (1)

HS024 (UTEX ZZ1248)

Arthronema

Holotype species: Arthronema africanum
(Schwabe & Simonsen) Komárek & Lukavsky 1988: 266

6.3.1 (1), 6.3.17 (2)


Arthrospira

Lectotype species: Arthrospira jenneri
Stizenberger ex Gomont 1892: 246; designated in Gardner (1932)

5.2.1.4 (1), 5.3.3.1 (2, uncultured)


Atlanticothrix

Holotype species: Atlanticothrix silvestris
Alvarenga et al. 2021: 6

1.3.7E (5)

CENA357

Aulosira

Lectotype species: Aulosira laxa
O. Kirchner ex Bornet et Flahault 1886: 256;
designated in Geitler, L. (1942).

1.8.4A (1)


Azorothrix

Holotype species: Azorothrix ramosa
R.F.S. Luz, G.S. Hentschke et V. Gonçalves 2024: 102

1.14.1F (5), 1.14.1O (2)

BACA0066

Baaleninema

Holotype species: Baaleninema simplex
Samylina, Sinetova, Kupriyanova and Tourova 2021

5.2.4.7B (2)

PCC 7105

Blennothrix

Holotype species: Blennothrix vermicularis
Kützing ex Anagnostidis & Komárek 1988: 429

3.2.3D (1, herbarium)


Brasilonema

Holotype species: Brasilonema bromeliae
Fiore, Sant-Anna, de Paiva Azevedo,
Komárek, Kaštovsky, Sulek & Lorenzi 2007: 794, 796

1.19.4B (1)

SPC 951

Brunnivagina

Type species: Brunnivagina elsteri
(Komárek, Nedbalová & Hauer) Saraf, J.R.Johans. &
Pras.Singh comb. nov. 2024: 1145

Loner genus in family 1.15

CCALA 953

Caldora

Holotype species: Caldora penicillata
(Gomont) Engene, Tronholm et Paul 2015: 678

3.1.1 (10)

FK13-1

Calenema

Holotype species: Calenema singularis
Ramos, Brito et Kaštovsky 2017: 29

loner genus in family 6.2 (1)

LEGE 06188

Calochaete

Holotype species: Calochaete cimrmanii
Hauer, Bohunická & Mühlsteinová 2013: 38

1.8.4G (1)

CCALA 1012

Calothrix

Lectotype species: Calothrix confervicola
C. Agardh ex Bornet et Flahault 1886: 345;
designated in Geitler, L. (1942).

none


Camptylonemopsis

Lectotype species: Camptylonemopsis lahorensis
(S.L. Ghose) Desikachary 1948: 46; designated in
Desikachary, T.V. (1959).

none


Candidatus Sivonenia

Holotype species: Candidatus Sivonenia alaskensis
Pessi et al. 2023: 9

11.2.3 (1)

IMG_3300025548_6

Capilliphycus

Holotype species: Capilliphycus salinus
T.A. Caires, Sant’Anna & Nunes 2019: 1

5.2.1.6C (1)

ALCB114379

Capsosira

Epitype species: Capsosira brebissonii
Kützing ex Bornet & Flahault 1886: 79

1.17.1A (6), 1.17.1B (3) (uncultured)

S23_clone8-1

Cartusia

Holotype species: Cartusia fontana
(Hansgirg) Mai, Johansen et Pietrasiak 2018: 38

6.2.3C (1)

Kovacik 1999/1

Cephalothrix

Holotype species: Cephalothrix komarekiana
Malone et al. 2015: 3003

3.2.1A (2), 3.2.1B (2)

CCIBt3277

Chakia

Holotype species: Chakia ciliosa
Komárková, Zapomelová & Komárek 2013: 228

1.19.13 (4)

CCALA 1015

Chalicogloea

Holotype species: Chalicogloea cavernicola
Roldán, Hernández-Mariné & Komárek 2012: 2329

5.1.1.4C (1)

CCALA 975

Chamaesiphon

Holotype species: Chamaesiphon confervicola
A. Braun 1864: 177

none


Chamaethrix

Holotype species: Chamaethrix vaginata
Dvořák, Hašler, Pitelková, Tabáková, Casamatta
& Pouličková 2017: 270

loner genus in family 6.3 (1)

F12/109

Chlorogloea

Holotype species: Chlorogloea tuberculosa
(Hansgirg) Wille 1900: 5

none


Chlorogloeopsis

Holotype species: Chlorogloeopsis fritschii
(A.K. Mitra) Mitra et Pandey 1967: 111

1.15.3 (3)


Chondrocystis

Holotype species: Chondrocystis schauinslandii
Lemmermann 1899: 353

none


Chroakolemma

Holotype species: Chroakolemma opaca
Becerra-Absalón & Johansen 2018: 204

6.3.21 (3)

701

Chroococcidiopsis

Holotype species: Chroococcidiopsis thermalis
Geitler 1933: 625

3.1.14A (3)


Chroococcopsis

Holotype species: Chroococcopsis gigantea
Geitler 1925: 342; ref str. suggested by
Shalygin et al (2019)

loner genus in family 5.1.5 (1)

SAG 12.99

Chroococcus

Holotype species: Chroococcus rufescens
(Kützing) Nägeli 1849: 45

none


Chroogloeocystis

Holotype species: Chroogloeocystis siderophila
Brown, Mummey et Cooksey 2005: 310 nom. inval.

3.1.16B (1)


Coelomoron

Holotype species: Coelomoron regulare
Buell 1938: 379

none


Coelosphaerium

Holotype species: Coelosphaerium kuetzingianum
Nägeli
1849: 54

none


Coleodesmium

Holotype species: Coleodesmium wrangelii
Borzì ex Geitler 1942: 154

1.14.1C (2)


Coleofasciculus

Holotype species: Coleofasciculus chthonoplastes
(Thuret ex Gomont) Siegesmund, Johansen
et Friedl 2008: 1575

3.1.4A (7), 3.1.4B (4)

SAG 2209=WW7

Compactococcus

Holotype species: Compactococcus sarcinoides
Jung, Büdel et Lakatos 2021: 17

Poor quality sequence, not included

DSM 112643

Compactonostoc

Holotype species: Compactonostoc shennongjiaensis
Cai et Li. Validated by Cai et Li 2019: 1

1.8.5C (1)

CHAB 5781

Constrictifilum

Holotype species: Constrictifilum karadense
Chavadar et al. 2021: 9

1.8.4F (1)

MKW3

Copelandiella

Holotype species: Copelandiella yellowstonensis
Johansen, J.R., Kastovsky, J. & Akagha, M.U. 2023: 8

6.3.38A(4)

YNP81-MA1

Crassifilum

Holotype species: Crassifilum sonorensis
Moreira-Fernandes, Giraldo-Silva, D. Roush
et Garcia-Pichel 2021: 1575

3.1.26 (1)

SON62 (UTEX ZZ1244)

Crinalium

Holotype species: Crinalium endophyticum
Crow 1927: 165

none


Crocosphaera

Holotype species: Crocosphaera watsonii
Zehr, Foster, Waterbury et Webb 2019: 601

5.1.4.1B (8)

WH8501

Cronbergia

Holotype species: Cronbergia siamensis
(Antarikanonda) Komárek, Zapomelová &
Hindák 2010: 329

1.7.1D (1) 1.18.1 (2)

SAG 11.82=CCALA 756

Crustifilum

Holotype species: Crustifilum hispaliculae
Moreira-Fernandes, Giraldo-Silva, D. Roush
et Garcia-Pichel 2021: 1576

3.1.6 (1)

SEV30 (=UTEX ZZ1245)

Cryptochroococcus

Holotype species: Cryptochroococcus tibeticus
Yilang Wang, Nannan Jia et Renhui Li 2021: 1741

5.1.6.14A (4)

TP201716.4

Cryptococcum

Holotype species: Cryptococcum brasiliense
Gama et al 2019: 323

5.1.6.10B (1)

CCIBt3410

Cuspidothrix

Holotype species: Cuspidothrix issatschenkoi
(Usachev) Rajaniemi, Komárek, Willame, Hrouzek,
Kastovská, Hoffmann & Sivonen 2005: 388

1.1.1N (6)


Cyanoarbor

Holotype species: Cyanoarbor rupestre
C.Z. Wang 1989: 129

none


Cyanobacterium

Holotype species: Cyanobacterium stanieri
Rippka et Cohen-Bazire 2022: 7

5.1.7.6A (3)

PCC 7202

Cyanobium

Holotype species: Cyanobium gracile
Rippka et Cohen-Bazire 1983: 31; emended by
Komárek et al., 2020: 183

7.1.1J (1)

PCC 6307

Cyanocohniella

Holotype species: Cyanocohniella calida
Kastovský, Berrendero, Hladil et Johansen 2014: 282

1.3.5 (2)

CCALA 1049

Cyanocystis

Holotype species: Cyanocystis versicolor
Borzì
1882: 314

none


Cyanodictyon

Holotype species: Cyanodictyon endophyticum
Pascher 1914: 351

none


Cyanoleptonema

Holotype species: Cyanoleptonema yuqiaoensis
Q.Zhang & L.Song 2024: 458

loner genus in family 5.2.5 (1)

FACHB-3577

Cyanomargarita

Holotype species: Cyanomargarita melechinii
Shalygin, Shalygina et Johansen 2017: 762

1.4.3 (1)

APA-RS9

Cyanoplacoma

Holotype species: Cyanoplacoma vesiculosa
Schousboe ex Bornet et Thuret (as Placoma)
emend. Molinari & Guiry 2021: 2

none


Cyanosarcina

Holotype species: Cyanosarcina fontana
Kovácik
1988: 175

none


Cyanospira

Holotype species: Cyanospira capsulata
Florenzano, Sili, Pelosi et Vincenzini 2015: 845
nom. illeg. (priority for Cyanospira Chodat, 1921, Euglenaceae)

none


Cyanothece

Holotype species: Cyanothece aeruginosa
(Nägeli) Komárek
1976: 146; Neotype Mares et al. 2019

3.1.21 (3), 5.1.1.3A (1)

SAG 87.79

Cylindrospermum

Lectotype species: Cylindrospermum majus
Kützing ex Bornet & Flahault 1886: 249; designated in
Geitler, L. (1942).

1.7.1A (2)


Cymatolege

Holotype species: Cymatolege spiroidea
Konstantinou et Gkelis 2020: 6

loner genus in family 6.1 (1)

TAU-MAC 1315

Dactylococcopsis

Lectotype species: Dactylococcopsis rupestris
Hansgirg 1888: 590; designated in Drouet et Daily (1956).

none


Dactylothamnos

Holotype species: Dactylothamnos antarcticus
Fiore, Genuário et Komárek 2015: 180

1.14.1A (3)

CENA410

Dapis

Holotype species: Dapis pleousa
Engene, Tronholm et Paul, 2018: 443

5.2.2.3B (4)

FFP12-5

Dapisostemonum

Holotype species: Dapisostemon apicaliramis
Hentschke et al. 2016: 137

1.13.3 (2)

CCIBt3318

Dendronalium

Holotype species: Dendronalium phyllosphericum
Alvarenga et al. 2021: 10

1.8.6D (3)

CENA369

Dermocarpa

Holotype species: Dermocarpa violacea
P. Crouan et H. Crouan 1858: 70

none


Dermocarpella

Holotype species: Dermocarpella hemisphaerica
(Lemmermann) Lemmermann 1907: 349

none


Desertifilum

Holotype species: Desertifilum tharense
Dadheech et Krienitz 2012: 263

4.3.1A (8)

PD2001/TDC17

Desikacharya

Holotype species: Desikacharya nostocoides
Saraf et Prashant Singh 2019: 1; type designated by
Saraf et al. (2019) Notulae Algarum 107

1.12.11 (1)

BHU1_PS

Desmonostoc

Holotype species: Desmonostoc muscorum
(C. Agardh ex Bornet et Flahault) Hrouzek et
Ventura 2013: 211

1.8.1F (1), 1.8.2A (5), 1.8.2B (1), 1.8.2C (1),
1.8.2H (3), 1.9.4B (1)

NIVA–CYA 818

Dolichospermum

Holotype species: Dolichospermum flosaquae (Brébisson
ex Bornet & Flahault) Wacklin, Hoffmann & Komárek 2009: 60

1.1.1A (1), 1.1.1E (7), 1.1.1H (2), 1.1.1J (2), 1.8.2 (3), 1.10.1


Drouetiella

Holotype species: Drouetiella lurida
(Gomont) Mai, Johansen et Pietrasiak 2018: 17

6.2.7B (1)

Lukesova 1986/6

Dulcicalothrix

Holotype species: Dulcicalothrix necridiiformans
Saraf et al. 2019: 8; type designated by Saraf et al.(2019)

1.15.9C (1)

V13 (MCC 3324)

Edaphophycus

Holotype species: Edaphophycus epilithus
N.Lee, D.Kim, T.Kim, J.Ki & O.Lee 2022: 11

3.2.9 (2)

FBCC-A203

Egbenema

Holotype species: Egbenema aeruginosa
M.U. Akagha et J.R. Johansen 2023: 1221

6.2.12B (1)

N15–MA6

Elainella

Holotype species: Elainella saxicola
Jahodárová, Dvorák & Hasler 2017: 42

6.2.4A (4)

UPOC E1/2017 as E1

Eucapsis

Holotype species: Eucapsis alpina
Clements et Schantz 1909: 134

none


Euhalothece

nom. inval. (no description)

(5.2.4.1B (1) , 5.2.4.3A (2), 5.2.4.3C (1))


Eurychoronema

Holotype species: Eurychoronema bolivianum
G. S.Hentschke 2024: 512

loner genus in family 6.1 (1)

LEGE 231228

Euryhalinema

Holotype species: Euryhalinema mangrovii;
type designated by Chakraborty et al. 2019: 70

6.1.20 (1)

MCC 3171

Ewamiania

Holotype species: Ewamiania thermalis
McGregor et Sendall 2017: 43

1.19.12 (2)

TS0513

Fischerella

Holotype species: Fischerella thermalis
Gomont 1895: 52

1.15.4A (17), 1.15.4B (1), 1.15.4C (2)
bacteria(6)


Floridanema

Holotype species: Floridanema aerugineum
D.E. Berthold, Moretto, Lefler et Laughinghouse
2025: 94, 95

3.3.1A (1), bacteria(1)

BLCC-F46

Foliisarcina

Holotype species: Foliisarcina bertiogensis
Alvarenga, Rigonato, Branco, Melo et Fiore 2016: 694

5.1.5.6A (3), 5.1.5.6D (1)

CENA333

Fortiea

Lectotype species: Fortiea caucasica
(Elenkin) De Toni;
Holotype designation: De Toni 1936: 3

none


Fremyella

Holotype species: Fremyella grisea De Toni 1936

none


Fulbrightiella

Holotype species: Fulbrightiella bharadwajae
N.Kumar, P.Singh & J.R.Johan 2023: 207, 208

1.15.13B (2)

18G-PS (HA4248-MV3)

Funiculus

Holotype species: Funiculus tenuis
Moreira-Fernandes, Giraldo-Silva, D. Roush
et Garcia-Pichel 2021: 1575

3.3.2A (1)

HSN023 (UTEX ZZ1247)

Gansulinema

Holotype species: Gansulinema desertorum
S. Li & F. Cai 2024: 435

6.2.16 (2)

GS121

Geitleribactron

Holotype species: Geitleribactron periphyticum
Komárek 1975: 276

none


Geitlerinema

Holotype species: Geitlerinema splendidum
(Greville ex Gomont) Anagnostidis 1989: 35

4.5.1 (5)

CCALA 1004

Geminobacterium

Holotype species: Geminobacterium atlanticum
Ramos, Brito et Kaštovsky 2017: 22

loner genus in family 5.1.7 (1)

LEGE 07459

Geminocystis

Holotype species: Geminocystis herdmanii
Korelusová, Kastovský & Komárek 2009: 933

5.1.7.1B (1)

PCC 6308

Gibliniella

Holotype species: Gibliniella alaskaensis
Strunecky et Raabova 2019: 16

6.1.19 (2)

L31

Gloeobacter

Holotype species: Gloeobacter violaceus
Rippka, Waterbury et Cohen-Bazire 1974: 436

11.1.1A (7)

PCC 7421

Gloeocapsa

Holotype species: Gloeocapsa atrata
Kützing 1843: 173

none


Gloeocapsopsis

Holotype species: Gloeocapsopsis crepidinum
(Thuret) Geitler ex Komárek 1993: 229; emend.
P. Jung, M. Lakatos et B. Büdel 2021: 4

3.1.16D (1), 5.1.5.6B (1)

LEGE 06123

(CCAP 1425/1)

Gloeomargarita

Holotype species: Gloeomargarita lithophora
Moreira et al. 2017: 567

10.2.1F (1)

Alchichica-D10

Gloeothece

Holotype species: Gloeothece linearis
Nägeli 1849: 57

none


Gloeotrichia

Holotype species: Gloeotrichia pisum
Thuret ex Bornet et Flahault 1889: 365

none


Godleya

Holotype species: Godleya alpina
Novis et Visnovsky 2011: 14

1.14.2A (2)

LCR-CY2

Goleter

Holotype species: Goleter apudmare
Miscoe et Johansen 2016: 92

1.5.1A (3)

HA4340-LM2

Gomphosphaeria

Holotype species: Gomphosphaeria aponina
Kützing 1836: 3

loner genus in family 5.1.6 (1)


Gracilinea

Holotype species: Gracilinea arenicola
Machado de Lima et Branco 2020: 266

3.1.12 (2)

CATCC10

Haloleptolyngbya

Holotype species: Haloleptolyngbya alcalis
Dadheech, Mahmoud, Kotut et Krienitz 2012: 272

6.1.4 (1)

KR2005/106

Halomicronema

Holotype species: Halomicronema excentricum
Abed, Garcia-Pichel & Hernández-Mariné 2002: 368

6.1.4 (1), 6.1.5A (1)

TFEP1

Halospirulina

Holotype species: Halospirulina tapeticola
Nübel, Garcia-Pichel et Muyzer 2000: 1275

5.1.7.18 (2)

CCC Baja-95 Cl. 2

Halothece

Holotype species: Halothece californica
Margheri, Ventura, Kastovský & Komárek 2008: 480

5.2.4.4 (1)

MPI 96P605

Halotia

Holotype species: Halotia branconii
Genuário et al. 2015: 667

1.3.7A (4)

CENA392

Hapalosiphon

Lectotype species: Hapalosiphon pumilus
Kirchner ex Bornet et Flahault 1886: 54; designated in
Geitler, L. (1942).

none


Hassallia

Lectotype species: Hassallia byssoidea
Hassall ex Bornet et Flahault 1886: 116; designated in
Geitler, L. (1942).

1.14.1E (1), 1.14.1F (1)


Heteroleibleinia

Holotype species: Heteroleibleinia rigidula
(Kützing ex Hansgirg) Hoffmann 1985: 76

none


Heteroscytonema

Holotype species: Heteroscytonema crispum
McGregor et Sendall 2018: 46, 48

1.16.5 (6)


Hillbrichtia

Holotype species: Hillbrichtia pamiria
I. Jasser, M. Panou, M. Sandzewicz et S. Gkelis
2022: 12

4.5.2 (3)

TAU-MAC Cylx 15.1

Hormoscilla

Holotype species: Hormoscilla xishaensis
(M. Hua) Anagnostidis et Komárek 1988: 425

none


Hyalidium

(no information available)

(3.1.1 (5))


Hydrococcus

Holotype species: Hydrococcus rivularis
Kützing 1833: 380

none


Hydrocoleum

Lectotype species: Hydrocoleum homoeotrichum
Kützing ex Gomont 1892: 332; designated in Gardner, N.L. (1932)

none


Hydrocoryne

Holotype species: Hydrocoryne spongiosa
Schwabe ex Bornet et Flahault 1886: 83

1.2.9C (1)


Hyella

Holotype species: Hyella caespitosa
Bornet et Flahault 1888: 163;
ref str. suggested by Shalygin et al. (2019)

5.1.5.3E (1)

PCC 7516

Inacoccus

Holotype species: Inacoccus carmineus
Gama et al. 2019: 323

5.1.6.3A (2)

CCIBt3411

Iningainema

Holotype species: Iningainema pulvinus
McGregor et Sendall 2017: 17

1.13.2 (4)


Insularia

Holotype species: Insularia amadoi
V.L.Araújo, A.S.Schnadelbach, J.M.C.Nunes &
T.A.Caires 2023: 462

6.1.13A (1)

ALCB 132761

Iphinoë

Holotype species: Iphinoë spelaebios
Lamprinou et Pantazidou

1.19.5A (1)

LO2–B1

Jaaginema

Holotype species: Jaaginema subtilissimum
(Kützing ex Forti) Anagnostidis et Komárek 1988: 395

none


Jacksonvillea

Holotype species: Jacksonvillea apiculata
Hasler, Casamatta, Dvorák & Poulícová 2017: 289

4.1.1 (4)

UPOC 77b/2013

Johannesbaptistia

Holotype species: Johannesbaptistia primaria
(N.L. Gardner) G. De Toni 1934: 6

none


Johanseniella

Holotype species: Johanseniella tripurensis
Pal and Singh 2022: 6

1.5.2C (1)

URH-6-PS

Johanseninema

Holotype species: Johanseninema constrictum
(Szafer) Hasler, Dvorák & Poulícková 2014: 293

5.1.6.6 (3)


Kaarinaea

Holotype species: Kaarinaea lacus
Saraf et al. 2024: 9

1.8.7 (3)

PCC 9237

Kaiparowitsia

Holotype species: Kaiparowitsia implicata
Mai, Johansen et Bohunická 2018: 46

6.2.21 (3)

GSE-PSE-MK54-09C

Kamptonema

Holotype species: Kamptonema animale
(C. Agardh ex Gomont) Strunecký, Komárek & Smarda 2014: 203

5.3.2.1A (4)

CCALA 139 (SAG72.79)

Karukerafilum

Holotype species: Karukerafilum mangrovensis
Halary, Duval, Marie, Bernard et Duperron 2024: 6

3.1.27 (2)


Kastovskya

Holotype species: Kastovskya adunca
(Schwabe) Mühlsteinová, Johansen & Pietrasiak
2014: 219

3.1.13 (5)

ATA6-11-RM4


Katagnymene

Lectotype species: Katagnymene pelagica
Lemmermann 1899: 354

none


Khargia

Holotype species: Khargia iranica
Noroozi, Rasouli–Dogaheh, Khansha et Hauer 2023: 54

6.3.36A (2)

K.T.2

Klisinema

Holotype species: Klisinema persicum
Heidari et Hauer 2018: 145

5.2.4.10 (1)

SHAFA S10

Koinonema

Holotype species: Koinonema pervagatum
Buch, Martins et Branco 2017: 1102, 1103

5.2.3.3A (3), 5.2.3.3B (1)

63PC

Komarekiella

Holotype species: Komarekiella atlantica
Hentschke, Johansen & Sant’Anna 2017: 180

1.8.1G (1), 1.8.5A (6)

CCIBt 3483

Komarkovaea

Holotype species: Komarkovaea angustata
Mai, Johansen et Pietrasiak 2018: 44

loner genus in family 6.2 (1)

EY01-AM2

Komarkovaeasiopsis

Holotype species: Komarkovaeasiopsis thermale
S. Li & F. Cai 2024: 434

loner genus in family 6.2 (2)

XN101

Komvophoron

Holotype species: Komvophoron schmidlei
(Jaag) Anagnostidis et Komárek 1988: 372

none


Konicacronema

Holotype species: Konicacronema caatingensis
Machado-de-Lima et Branco 2020: 269

3.3.2B (2) (e)

CATCB1

Kovacikia

Holotype species: Kovacikia muscicola
Miscoe, Pietrasiak et Johansen 2016: 83

6.3.28 (2), 6.3.30H

HA7619-LM3

Kryptousia

Holotype species: Kryptousia macronema
Alvarenga, Andreote, Branco et Fiore 2017: 3303

1.14.1H (2)

CENA338

Kyrtuthrix

Holotype species: Kyrtuthrix dalmatica
Ercegovic 1929: 170

none


Lagosinema

Holotype species: Lagosinema tenue
Akagha et Johansen 2019: 3

5.4.2.3A (2)

NGPC151

Laspinema

Holotype species: Laspinema thermale
Heidari et Hauer 2018: 144

5.2.3.1A (2)

HKS5

Leptochromothrix

Holotype species: Leptochromothrix valpauliae
Berthold, Lefler et Laughinghouse 2020: 11

loner genus in family 5.2.4 (1)

BLCC-M82

Leptodesmis

Holotype species: Leptodesmis paradoxa
Raabová, Kovacik & Strunecký nom. inval. 2019: 13

6.3.24A (1)

LK021 (CCALA 1104)

Leptoelongatus

Holotype species: Leptoelongatus litoralis
Chakraborty et Mukherjee 2019: 70

Poor quality sequence, not included

MCC 3170

Leptolyngbya

Holotype species: Leptolyngbya boryana
(Gomont) Anagnostidis et Komárek 1988: 391

6.3.1 (8), 6.3.5 (1)


Leptothermofonsia

Holotype species: Leptothermofonsia sichuanensis
Daroch, Tang and Shah et al. nom. inval. 2022:12

6.3.34 (4)

PKUAC-SCTE412

Leptothoe

Holotype species: Leptothoe sithoniana
Konstantinou et Gkelis 2019: 885

6.1.6F (1)

TAU-MAC 0915

Limnococcus

Holotype species: Limnococcus limneticus
(Lemmermann) Komárková, Jezberová,
O. Komárek & Zapomelová 2010: 79

5.1.6.7 (1)


Limnofasciculus

Holotype species: Limnofasciculus baicalensis
Sorokovikova and Tikhonova 2023: 18

loner genus in family 3.1 (2)

BBK-W-15

Limnolyngbya

Holotype species: Limnolyngbya circumcreta
(G.S. West) X. Li et R. Li 2016: 479

6.3.26 (4)


Limnonema

Holotype species: Limnonema hangangris
J. Song, S. Kim, and O. Lee 2023: 6

3.2.10A (4)

ACKU-684

Limnoraphis

Holotype species: Limnoraphis hieronymusii
(Lemmermann) Komárek, Zapomelová, Smarda,
Kopecký, Rejmánková, J. Woodhouse, Neilan
& Komárková 2013: 45

5.2.1.6A (2)


Limnospira

Holotype species: Limnospira fusiformis
(Voronichin) Nowicka-Krawczyk, Mühlsteinová &
Hauer 2019: 3

5.2.1.4 (4)

SAG 85.79

Limnothece

Holotype species: Limnothece alkaliphila
Q. Zhang et L. Song 2024: 234

loner genus in family 5.1.7 (1)

FACHB-3576

Limnothrix

Holotype species: Limnothrix redekei
(Goor) Meffert 1988: 317

5.4.1.1A (3), 5.4.2.1A (2)


Loriellopsis

Holotype species: Loriellopsis cavernicola
Hernández-Mariné & Canals 2011: 2910

3.1.15A (1)

LF-B5

Lusitaniella

Holotype species: Lusitaniella coriacea
Ramos, Brito et Kaštovsky 2017: 25

5.1.8.1A (3), 5.1.8.1B (1)

LEGE 07167

Lyngbya

Holotype species: Lyngbya confervoides
C. Agardh ex Gomont 1892: 118

6.1.5A (1)


Macrochaete

Holotype species: Macrochaete psychrophila
Berredero, Johansen et Kaštovsky 2016: 641, 642

1.15.11 (7)

CCALA 1092

Marmoreocelis

Holotype species: Marmoreocelis xerophila
Machado-de-Lima et Branco 2020: 269

loner genus in family 2.2 (1)

CATCB5

Maricoleus

Holotype species: Maricoleus vaginatus
R. Geng, Y. Cheng et R. Li 2024: 29

6.2.14 (4)

WZU 0102

Marileptolyngbya

Holotype species: Marileptolyngbya sina
Zhou et Ling 2018: 78, 79

loner genus in family 6.1 (1)

SCSIO T-2

Marsacia

provis.

(6.2.24 (1))


Mastigocladopsis

Holotype species: Mastigocladopsis jogensis
Iyengar et Desikachary 1946: 58

none


Mastigocladus

Holotype species: Mastigocladus laminosus
Cohn ex Kirchner 1898: 81

1.15.1G (1), 1.15.4A (3), 1.15.4B (4),
1.15.4D (1)


Mastigocoleus

Holotype species: Mastigocoleus testarum
Lagerheim ex Bornet et Flahault 1886: 54

loner genus in family 1.15 (1)


Merismopedia

Holotype species: Merismopedia punctata
Meyen 1839: 440; Currently accepted name:
Merismopedia tranquilla (Ehrenberg) Trevisan

loner genus in family 5.1.7

(1; other is chimeric)


Metis

Holotype species: Metis fasciculata
Konstantinou et Gkelis 2020: 6

loner genus in family 6.2 (1)

TAU-MAC 1415

Microchaete

Holotype species: Microchaete grisea
Thuret ex Bornet et Flahault 1886: 82, 83

none


Microcoleus

Lectotype species: Microcoleus vaginatus
Gomont ex Gomont 1892: 355; designated in Gardner (1932).

5.3.1.1A (8)


Microcoleusiopsis

Holotype species: Microcoleusiopsis ganfuensis
R. Geng et G. Yu 2021: 4

5.3.3.1 (2)

CHAB 4138

Microcrocis

Epitype species: Microcrocis geminata
(
Lagerheim) Geitler 1942: 56; emend.
Pokorny et al. (2023)

5.1.7.22 (6)

CBFS A–128–1

Microcystis

Lectotype species: Microcystis aeruginosa
(Kützing) Kützing 1846: 6; Holotype designation:
Lemmermann, E. (1907).

5.1.1.1A (55)


Microlinema

Holotype species: Microlinema tropicalum
V.L.Araújo, A.S. Schnadelbach, J.M.C.Nunes
& T.A.Caires 2023: 461

6.1.22B (1)

ALCB 132774

Microseira

Holotype species: Microseira wollei
(Farlow ex Gomont) McGregor et Sendall
ex Kenins 2014: 112; validated by Kenins (2017)

3.2.3A (3), 3.2.3C (5), 3.2.3E (1)


Minunostoc

Holotype species: Minunostoc cylindricum
F. Cai et R. Li 2019: 15

1.12.6 (6)

CHAB 5843

Monilinema

Type species: Monilinema alkalinum
Malone, Genuário, Vaz, Fiore, Sant’Anna 2021: 481

6.3.5 (3)

CCIBt3284

Mojavia

Holotype species: Mojavia pulchra
Reháková & Johansen 2007: 488

1.8.3C (1)

JT2-VF2

Moorena

Holotype species: Moorena producens
Engene et Tronholm 2019: 1

3.1.3 (10)

3L

Myxacorys

Holotype species: Myxacorys chilensis
Pietrasiak et Johansen 2019: 980, 981

6.3.7A (3)

ATA2-1-KO14

Myxosarcina

Holotype species: Myxosarcina concinna
Printz 1921: 35

none


Neochroococcus

Holotype species: Neochroococcus gongqingensis
Geng et Yu 2021: 46

5.1.6.12 (2)

CHAB4018

Neocyanospira

Holotype species: Neocyanospira capsulata
Florenzano, Sili, Pelosi et Vincenzini. Renamed from
Cyanospira capsulata by Molinari-Novoa &
Guiry
2021: 4

1.3.2A (3)

Mag I 504

Neocylindrospermum

Holotype species: Neocylindrospermum variakineticum
Tawong, Pongcharoen & Saijuntha 2022: 656

1.18.2 (2)

NUACC18

Neolyngbya

Holotype species: Neolyngbya maris-brasilis
Caires, Sant'Anna et Nunes 2017: 201

5.2.1.2A (1)

ALCB114380

Neowestiellopsis

Holotype species: Noewestiellopsis persica
Kabirnataj et al. 2018: 508

1.15.1G (2)

SA33 (MCC 3377)

Neowollea

Holotype species: Neowollea manoromense
Tawong 2019: 3

1.2.2A (2)

NUACC15

Neosynechococcus

Holotype species: Neosynechococcus sphagnicola
Dvorák, Hindak, Hasler & Hindáková 2014: 26

loner genus in family 6.3 (1)

CAUP A 1101

Nodosilinea

Holotype species: Nodosilinea nodulosa
(Z. Li et J. Brand) Perkerson et Casamatta 2011: 1404

6.1.1C (4)

UTEX 2910

Nodularia

Holotype species: Nodularia spumigena
Mertens ex Bornet et Flahault 1886: 243

1.3.1A (13)


Nostoc

Lectotype species: Nostoc commune
Vaucher ex Bornet et Flahault 1886: 181; designated in
Geitler, L. (1942).

1.8.1 (in 10 spp.);

herbarium material in 1.8.1O


Nostochopsis

Holotype species: Nostochopsis lobatus
H.C. Wood ex Bornet et Flahault 1886: 80

1.15.1D (1)


Nunduva

Holotype species: Nunduva fasciculata
González-Resendiz, León-Tejera & Johansen 2018: 88

1.15.15G (1) + 2 uncultured


Oculatella

Holotype species: Oculatella subterranea
Zammit, Billi et Albertano 2012: 351

6.2.1A (5)

VRUC 135

Odorella

Holotype species: Odorella benthonica
Shalygin, Zimba et Huang 2019: 511, 512

5.1.5.2C (2)

CalAg792

Okeania

Holotype species: Okeania hirsuta
Engene, Paul, Byrum, Gerwick, Thor et Ellisman
2013: 1100

5.2.2.1C (2)

PAB-10-FEB-10-1

Okeanomitos

Holotype species: Okeanomitos corallinicola
Haiyan Li, Renhui Li & Z. Luo 2024: 912

1.2.2C (1)

TIOX110

Olisthonema

Holotype species: Olisthonema eestii
Panou et Gkelis 2021: 11

5.1.9 (2) Poor quality sequence, position uncertain

TAU-MAC 3318

Onodrimia

Holotype species: Onodrimia javaensis
Jahodárová, Dvorák & Hašler 2017: 30

6.3.14 (3) as O. javanensis

28

Ophiophycus

Holotype species: Ophiophycus aerugineus
Berthold, Lefler et Laughinghouse 2020: 14

5.2.2.7A (2), 5.2.2.7B (1)

BLCC-M88

Oscillatoria

Lectotype species: Oscillatoria princeps
Vaucher ex Gomont 1892: 198; designated in
Gardner, N.L. (1932)
Emended by Muehlsteinova et al (2018)

3.2.5A (2), 3.2.5B (3)

CCALA 1115

Oxynema

Holotype species: Oxynema thaianum
Chatchawan, Komárek, Strunecky, Smarda et
Peerapornpisal 2012: 50

5.2.3.2 (6)

CCALA 960

Paludothrix

Holotype species: Paludothrix granulosa
Y. Wu, Y. Cheng et R. Li 2025: 6, 7

3.1.28A (1)

WZU 2010

Pannus

Holotype species: Pannus spumosus
B. Hickel 1991: 100

none


Pantanalinema

Holotype species: Pantanalinema rosaneae
Vaz et al. 2015: 301

6.3.32 (4)

CENA516

Parakomarekiella

Holotype species: Parakomarekiella sesnandensis
Soares, Ramos et Portugal 2021: 305

1.8.5D (2)


Parifilum

Holotype species: Parifilum solicrustae
Moreira-Fernandes, Giraldo-Silva, D. Roush et
Garcia-Pichel 2021: 1576

loner genus in family 3.1 (1)

SON57 (UTEX ZZ1246)

Paraprochloron

Paraprochloron terpiosi (Candidatus)
Chen et al. 2021: 1318; nom. inval. (no description)

5.1.6.13 (2)

LD05

Parasynechococcus

Holotype species: Parasynechococcus marenigrum
Coutinho, Tschoeke, Thompson et Thompson
2020: 182 (validated by Komárek et al., 2020)

7.1.1Y (1)

WH 8102

Parathermosynechococcus

Holotype species: Parathermosynechococcus lividus
Tang, Jiang, Hu et al. 2024: 10

8.1.1B (1)

PCC 6715

Pegethrix

Holotype species: Pegethrix bostrychoides
Mai, Johansen et Bohunická 2018: 17

6.2.5A (2)

GSE-PSE-MK47-15B

Pelatocladus

Holotype species: Pelatocladus maniniholoensis
Johansen et Vaccarino 2016: 94

1.15.1K (2)

HA4357-MV3

Perforafilum

Holotype species: Perforafilum tunelli
Zimba, Shalygin et I.-S. Huang 2020: 14

loner genus in family 5.2.3 (1)

PZ1

Persinema

Holotype species: Persinema komarekii
Heidari et Hauer 2018: 146

5.4.2.3B (1), 5.4.2.3C (1, chimeric)

TM/S1

Petalonema

Type species: Petalonema alatum
(Borzì ex Bornet et Flahault) Wolle 1887: 267

1.19.10 (2)


Petrachloros

Holotype species: Petrachloros mirabilis
F. Soares, Trovão & Portugal 2022: 227

5.4.2.4A (1)

SCV7A

Phayaothrix

Holotype species: Phayaothrix lacustris
Tawong & T. Nishimura 2024: 38

1.15.6 (3)

NUACC09

Phormidesmis

Holotype species: Phormidesmis molle
(Gomont) Turicchia, Ventura, Komárková
et Komárek 2009: 179

6.3.1 (1), 6.3.18A (1),
loner genus in family 6.3 (1)

NIES-2126

Phormidium

Lectotype species: Phormidium lucidum
Kützing ex Gomont 1892: 156; designated in
Geitler, L. (1942).

6.1.5A (1)


Phyllonema

Holotype species: Phyllonema aviceniicola
Alvarenga, Rigonato, Branco, Melo et Fiore 2016: 695

1.15.17A (4)

CENA341

Picosynechococcus

Holotype species: Picosynechococcus fontinalis
Komárek, Johansen et Strunecký 2020: 185

5.1.7.9C (1)

FG-1

Pinocchia

Holotype species: Pinocchia polymorpha
Dvorák, Jahodárová & Hasler 2015: 114

6.3.9B (5)

UPOC 62–P/2013

Planktolyngbya

Holotype species: Planktolyngbya limnetica
(Lemmermann) Komárková-Legnerová et Cronberg
1992: 23

loner genus in family 6.3 (1)


Planktothricoides

Holotype species: Planktothricoides raciborskii
(Woloszynska) Suda et Watanabe 2002: 1593

5.2.3.4A (3)

NIES-207 (CCAP 1465/1)

Planktothrix

Holotype species: Planktothrix agardhii
(Gomont) Anagnostidis et Komárek 1988: 414

5.2.1.1A (23)


Plectolyngbya

Holotype species: Plectolyngbya hodgsonii
Taton, Wilmotte, Marda, Elster et Komárek 2011: 184

6.3.3 (2)

ANT.LPR2.2

Plectonema

Lectotype species: Plectonema tomasinianum
Bornet ex Gomont 1893: 99

none


Pleurocapsa

Holotype species: Pleurocapsa fuliginosa
Hauck 1885: 515; Neotype Shalygin et al. 2019

5.1.5.2E (1)

HA4302-MV1

Porphyrosiphon

Holotype species: Porphyrosiphon notarisii
Kützing ex Gomont 1892: 331

loner genus in family 2.1 (1)


Potamolinea

Holotype species: Potamolinea magna
Martins et Branco 2016: 3640

3.1.7B (1)

47PC

Potamosiphon

Holotype species: Potamosiphon australiensis
McGregor et Sendall 2019: 87

3.2.6A (2), 3.2.6B (1)


Prochlorococcus

Holotype species: Prochlorococcus marinus
Chisholm, Frankel, Goericke, Olson, Palenik,
Waterbury, West-Johnsrud et Zettler 2020: 299
emend. Komárek et al., 2020: 178, 179

7.1.3A (34), 7.1.3B (6), 7.1.3C (7),
7.1.3D (2), 7.1.3E (14)

CCMP1375 (Chisholm et al.)

MIT 9313 (Komárek et al.)

Prochloron

Holotype species: Prochloron didemni
Lewin ex Hoffmann et Greuter 1996: 643

5.1.6.1, 5.1.6.10 (6, uncultured)


Prochlorothrix

Holotype species: Prochlorothrix hollandica
Burger-Wiersma, Stal et Mur 1989: 255

7.3.1 (2)

PCC 9006 (CALU 1027)

Pseudanabaena

Holotype species: Pseudanabaena catenata
Lauterborn 1915: 437

5.4.1.1A (2)


Pseudoacaryochloris

Holotype species Pseudoacaryochloris sahariense
Mehda & P.Mateo 2023: 1 (nom inval. Mehda et al.,
2022:
464).

6.1.21A (11), 6.1.21B (1)

MAR63 clone 4

Pseudoaliinostoc

Holotype species: Pseudoaliinostoc soli
Lee, Bang, Kim, Ki et Lee 2021: 55

1.11.1D (1)

ZH1(3)_PS

Pseudocalidococcus

Holotype species: Pseudocalidococcus azoricus
R.F.S. Luz, J. Kastovsky, V. Goncalves 2023: 4

8.1.2 (5)

BACA0444

Pseudocapsa

Holotype species: Pseudocapsa dubia
Ercegovic 1925: 95

none


Pseudochroococcus

Holotype species: Pseudochroococcus couteii
Duval et al. 2021: 4

loner genus in family 5.1.6 (1)

PMC 885.14

Pseudocyanosarcina

Holotype species: Pseudocyanosarcina phycocyania
Jung, Büdel et Lakatos 2021: 16

Poor quality sequence, not included

DSM 112640

Pseudoleptolyngbya

Holotype species: Pseudoleptolyngbya figueirensis
Hentscke 2024: 9

none


Pseudophormidium

Holotype species: Pseudophormidium phormidioides
(Hansgirg ex Forti) Anagnostidis et Komárek 1988: 409

none


Pseudoscillatoria

Type species: Pseudoscillatoria coralii
nom. inval.; no description; (Rasoulouniriana et al.,
2009: 91)

4.2.1 (1)

BgP10_4S

Purpureonostoc

Holotype species: Purpureonostoc tibecum
Cai et Li 2020: 111

1.2.8A (2)

CHAB 5880

Pycnacronema

Holotype species: Pycnacronema brasiliensis
Martins et Branco 2019: 152

3.1.20A (3)

45PC

Radiculonema

Holotype species: Radiculonema aquaticum
R.F.S.Luv, Kaštovský, J.R.Johansen &
V.Goncalves 2023: 6

Loner genus in family 6.3 (1)


Radiocystis

Holotype species: Radiocystis geminata
Skuja 1948: 43

none


Ramsaria

Holotype species: Ramsaria avicennae
Heidari et Hauer 2018: 146

3.1.19 (1)

S.M/S12C

Raphidiopsis

Holotype species: Raphidiopsis curvata
Fritsch et Rich 1929: 91

1.2.1 (1)


Reofilinostoc

Holotype species: Reofilinostoc matlalcueyense
G. S. Hentschke, G. Garduño-Solórzano &
M. Martínez-García 2024: 128

1.12.2C (1)

F02

Reptodigitus

Holotype species: Reptodigitus chapmanii
Casamatta, Villaneuva, Stocks, Vaccarino
et Johansen 2020: 429

1.15.1E (1)

SJRDC1

Reticulonema

Holotype species: Reticulonema bolivianum
G. S. Hentschke 2025: 9, 10

5.2.2.9B (1)

LEGE 231229

Rexia

Holotype species: Rexia erecta
Casamatta, Gomez et J.R. Johansen 2006: 23

1.14.1G (2)

CAT4-SG4

Rhabdogloea

Holotype species: Rhabdogloea ellipsoidea
Schröder 1917: 549

none


Rhizonema

Holotype species: Rhizonema interruptum
Lücking et Barrie 2014: 265

none


Rhodoploca

Holotype species: Rhodoploca sivonenia
Konstantinou et Gkelis 2020: 6

loner genus in family 6.1 (1)

TAU-MAC 1815

Richelia

Holotype species: Richelia intracellularis
J.A. Schmidt 1901: 146

1.15.18A (2), 1.15.18B (1)


Rippkaea

Holotype species: Rippkaea orientalis
Johansen et Mares 2019: 603

5.1.4.5A (2)

PCC 8801

Rivularia

Lectotype species: Rivularia dura
Roth ex Bornet et Flahault 1886: 347;
designated in Geitler, L. (1942).

none


Roholtiella

Holotype species: Roholtiella edaphica
Bohunická & Lukesová 2015: 88

1.8.3A (7)

JOH39 (CCALA 1063)

Romeria

Lectotype species: Romeria leopoliensis
(Raciborski) Koczwara 1932: 915;
Holotype designation: Geitler, L. (1932)

none


Romeriopsis

Holotype species: Romeriopsis marina
G.S. Hentschke, A. Pinheiro, V. Ramos et
P. N. Léo 2022: 9

6.3.11A (1), 6.3.11B (2)

LEGE 06013

Roseofilum

Holotype species: Roseofilum reptotaenium
Casamatta, Stanic, Gantar et Richardson 2012: 494

4.2.1 (2)


Rubidibacter

Holotype species: Rubidibacter lacunae
Choi, Noh, Lee et Rho 2008: 2811;
nom. inval. (no description)

loner genus in family 5.2.4 (1)

KORDI 51-2

Salileptolyngbya

Holotype species: Salileptolyngbya diazotrophica
Zhou et Ling 2018: 80

6.1.5F (1)

SCSIO 43686

Schizothrix

Holotype species: Schizothrix fuscescens
Kutzing ex Gomont 1892: 292

none


Scytolyngbya

Holotype species: Scytolyngbya timoleontis
Song, Jiang et Li 2015: 74

6.3.31 (3)


Scytonema

Lectotype species: Scytonema hofmannii
C. Agardh ex Bornet et Flahault 1886: 85;
Holotype designation: Bornet, É. et Flahault, C.
(1886 '1887')

1.19.6 (1)


Scytonematopsis

Holotype species: Scytonematopsis woronichinii
Kiseleva 1930: 174

none


Shackletoniella

Holotype species: Shackletoniella antarctica
(West et West) Strunecky, Raabova et Bernardova 2019: 15

6.2.9 (5)

ANT.LH18.2

Shahulinema

Holotype species: Shahulinema minutum
Shuheng Li & F. Cai 2024: 147, 148

6.2.15 (1)

SH01

Sherwoodiella

Holotype species: Sherwoodiella mauiensis
J.R.Johansen & P.Singh 2023: 210

1.15.14A (2)

HA4860-CV1

Siamcapillus

Holotype species: Siamcapillus rubidus
Tawong, Pongcharoen, T.Nishimura et Saijuntha
2022: 36-38

6.2.28 (2)

NUACC13

Sinocapsa

Holotype species: Sinocapsa zengkensis
Wang et Li 2019: 154

3.1.24 (4)

CHAB 6571

Sirenicapillaria

Holotype species: Sirenicapillaria stauglerae
D.E. Berthold, Lefler & Laughinghouse 2022: 3

5.2.1.7A (4)

BLCC-M121

Sivoneniella

Holotype species: Sivoneniella epilithica
awaiting publication

6.3.25C (1)

UHCC 1019

Snowella

Holotype species: Snowella rosea
(J.W. Snow) Elenkin 1938: 278

5.1.7.12 (1)


Sodaleptolyngbya

Holotype species: Sodaleptolyngbya stromatolitii
Cellamare, Duval, Touibi, Djediat et Bernard 2018: 9

6.1.16 (2)

PMC 867.14

Sodalinema

Holotype species: Sodalinema komarekii
Cellamare, Duval, Touibi, Djediat et Bernard 2018: 6

5.2.4.8 (5)

PMC 869.14

Solentia

Holotype species: Solentia stratosa
Ercegovic 1927: 79

none


Sorospora

Holotype species: Sorospora montana
(Lightfoot) Hašler, Pentecost, Jahodářová, Dvořák
& Poulíčková 2018: 5-8

3.1.29 (2)


Spelaeonaias

Holotype species: Spelaeonaias floccida
Lamprinou, Christodoulou, Hernández-Mariné &
Economou-Amilli 2016: 175

1.19.5B (1)

PH00323987

Sphaerocavum

Holotype species: Sphaerocavum brasiliense
De Azevedo et Sant' Anna 2003: 81. Genus invalidated
by Rigonoto et al. (2018)

5.1.1.1A (5)

SPC 484 CIBt3094

Sphaerospermopsis

Holotype species: Sphaerospermopsis reniformis
(Lemmermann) Zapomelová, Jezberová, Hrouzek,
Hisem, Reháková & Komárková 2010: 415

1.2.3A (2)


Sphaerothrix

Holotype species: Sphaerothrix gracilis
Curren et al. 2024: 207. nom. inval. (no description)

6.1.8B (1) bacterial outgroup (3)

Ecp01

Spirirestis

Holotype species: Spirirestis rafaelensis
Flechtner et Johansen 2002: 7

1.14.1K (2)

SRS70 (UTEX 2660)

Spirulina

Lectotype species: Spirulina major
Kützing ex Gomont; designated in Geitler, L. (1942).

5.1.7.17B (1), 5.1.7.19 (2)


Stanieria

Holotype species: Stanieria cyanosphaera
(Komárek & Hindák) Komárek & Anagnostidis 1986: 208

5.1.5.10A (2), 5.1.5.11 (2)


Starria

Holotype species: Starria zimbabweënsis
N.J. Lang 1977: 289

2.2.4 (1)


Stenomitos

Holotype species: Stenomitos rutilans
Miscoe et J.R. Johansen 2016: 84

6.3.30H (1)

HA7619-LM2

Stigonema

Epitype species: Stigonema mamillosum
Agardh ex Bornet et Flahault 1886: 62; designated in
Gardner, N.L. (1932).

1.16.1D (4), 1.16.1G (1) (uncultured)

N01 clone7-2,
N01 clone7-4

Symbiothallus

Holotype species: Symbiothallus taiwanensis
C.-­C.C. and K.-­H.C. 2025: 11

2.1.5 (2)

ASV000002

Symphyonema

Holotype species: Symphyonema sinense
C.-C. Jao 1944: 81

none


Symphyonemopsis

Holotype species: Symphyonemopsis katniensis
G.L. Tiwari et A.K. Mitra 1969: 93

none


Symploca

Lectotype species: Symploca muralis
Kützing ex Gomont 1892: 104; designated in
Setchell, W.A. et Gardner, N.L. (1919).

none


Symplocastrum

Lectotype species: Symplocastrum friesii
(Gomont) Kirchner 1898: 69; designated in
Gardner, N.L. (1932).

none


Synechococcus

Holotype species: Synechococcus elongatus
(Nägeli) Nägeli 1849: 59; ref. str. accepted by
Komárek et al., 2020

7.2.1 (14), 8.2.1A (1)

PCC 6301

Synechocystis

Holotype species: Synechocystis aquatilis
Sauvageau 1892: cxv

5.1.5.10A (1), 5.1.7.15 (1), 5.1.7.4B (1)


Tapinothrix

Holotype species: Tapinothrix bornetii
Sauvageau 1892: cxxiii; Nom. rej. vs. Homoeothrix
(Thuret ex Bornet et Flahault) Kirchner 1898

none


Tenebriella

Holotype species: Tenebriella amphibia
Hauerová, Hauer et Kaštovský 2021: 4

5.2.2.6 (4)

RMCB14, CCALA 1132

Thainema

Holotype species: Thainema salinarum
Rasouli-Dogaheh et Hauer 2022: 13

6.1.13A (1), 6.1.13B (2)

CCALA 10287

Thalassoporum

Holotype species: Thalassoporum komareki
Konstantinou et Gkelis 2020: 11

5.4.1.5 (1)

TAU-MAC 1515

Thermocoleostomius

Holotype species: Thermocoleostomius sinensis
Daroch, Jiang, Tang et al. 2023: 16

6.2.12I (2)

FACHB-3572

Thermoleptolyngbya

Holotype species: Thermoleptolyngbya albertanoae
Sciuto et Moro

6.2.8A (1)

ETS-08, CCALA 10257

Thermospirulina

Holotype species: Thermospirulina andreolii
Moro et al. 2021: 491

5.1.7.21A (2)

ETS-09

Thermostichus

Type species: Thermostichus vulcanus
(Copeland) Komárek et Strunecký comb. nov. 2020: 174

10.1.2C (1)

RUP–VU–1

Thermosynechococcus

Holotype species: Thermosynechococcus elongatus
Katoh, Itoh, Shen et Ikeuchi 2001: 599; validated by Komárek et al., 2020 as T. vestitus (Copeland)
Komárek et Strunecký comb. nov.; revised by Tang et al., 2024 as Parathermosynechococcus

8.1.1A (1)

BP-1

Tigrinifilum

Holotype species: Tigrinifilum floridanum
D.E. Berthold, Lefler & Laughinghouse 2022: 4

5.2.1.5 (14)

BLCC-M48

Tildeniella

Holotype species: Tildeniella torsiva
Mai, Johansen et Pietrasiak 2018: 40

6.2.20 (3)

Uher 1998/13d

Timaviella

Holotype species: Timaviella circinata
Sciuto et Moro 2017: 318, 319

6.2.10D (1)

GR4, ULC401

Tolypothrix

Lectotype species: Tolypothrix distorta
Kützing ex Bornet et Flahault 1886: 118; designated in
Geitler, L. (1942).

1.14.1A (1), 1.14.1F (1), 1.14.1I (10),
1.14.1K (2), 1.14.1M (2), 1.14.1O (1)


Toxifilum

Holotype species: Toxifilum mysidocida
Zimba, Huang, Foley et Linton 2017: 190

6.1.14 (1)

MYSIDO1

Toxopsis

Holotype species: Toxopsis calypsus
Lamprinou, Skaraki, Kotoulas, Economou-Amili
et Pantazidou 2012: 2872

1.14.2B (2)


Trichocoleus

Holotype species: Trichocoleus delicatulus
(West et West) Anagnostidis 2001: 369;
Holotype designation: Anagnostidis, K. (2001).

3.3.2A (1)


Trichodesmium

Lectotype species: Trichodesmium erythraeum
Ehrenberg ex Gomont 1892: 96, 193; designated in
Geitler, L. (1942).

5.2.2.2A (2)


Trichormus

Holotype species: Trichormus variabilis
(Kützing ex Bornet & Flahault)
Komárek & Anagnostidis 1989: 303

1.1.2A (8), 1.10.1 (8)


Trichothermofontia

Holotype species: Trichothermofontia sichuanensis
Daroch, Tang and Zhou et al. 2023: 14-16

loner genus in family 6.2 (1)

PKUAC-SCTB231

Trichotorquatus

Holotype species: Trichotorquatus maritimus
Pietrasiak et Johansen 2021: 889

6.2.19 (4)

SMER-A

Tumidithrix

Holotype species: Tumidithrix elongata
R.F.S. Luz, Kastovsky, J.R. Johans &V. Goncalves
2023: 6

5.4.1.3 (2)


Tychonema

Holotype species: Tychonema tenue
(Skuja) Anagnostidis et Komárek 1988: 410

5.3.1.1H (1)


Umezakia

Neotype species: Umezakia ovalisporum
(Forti) McGregor, Sendall, Niiyama, Tuji & Willis
2023: 337

1.3.3A (22)


Venetifunis

Holotype species: Venetifunis florensis
R.F.S. Luz, Kastovsky, J.R. Johansen & V. Goncalves
2023: 485

loner genus in family 6.2 (1)

BACA0587

Vermifilum

Holotype species: Vermifilum ionodolium
Berthold, Lefler et Laughinghouse 2020: 14

5.2.2.9 (5)

BLCC-M29

Violetonostoc

Holotype species: Violetonostoc minutum
Cai et Li 2020: 3

1.9.5 (2)

CHAB5840

Vulcanococcus

Holotype species: Vulcanococcus limneticus
Di Cesare et al. 2018: 8

none


Waterburya

Holotype species: Waterburya agarophytonicola
Bonthond et Shalygin 2021: 10

none

K14

Westiella

Holotype species: Westiella intricata
Borzì 1907: 373

loner genus in family 1.13 (1), 1.15.1J (2)
same strain: sequence heterogeneity

UH HT-29-1

Westiellopsis

Holotype species: Westiellopsis prolifica
Janet 1941: 170

1.15.1A (3), 1.15.1G (1), 1.15.1J (1)


Wilmottia

Holotype species: Wilmottia murrayi
(West & West) Strunecký, Elster & Komárek 2011: 62

3.1.5A (3)

KGI28 (CCALA 843)

Wollea

Holotype species: Wollea saccata
Bornet et Flahault 1886: 223

1.2.5A (2)


Woronichinia

Holotype species: Woronichinia naegeliana
(Unger) Elenkin 1933: 28

5.1.7.13 (1)


Xenococcus

Holotype species: Xenococcus schousboei
Thuret 1880: 74; ref str. suggested by Shalygin et al. (2019)

5.1.5.9C (1)

PCC 7305

Zarkonia

Holotype species: Zarkonia navalis
G.S. Hentschke, A. Pinheiro, V. Ramos et
P. N. Léo 2022: 8

loner genus in family 5.2.4 (1)

LEGE 11467

Zehria

Holotype species: Zehria floridana
Johansen et Mares 2019: 603

5.1.4.4B (1)

WH8904



(a) only genera included on this site are listed

(b) type species from AlgaeBase ($) or publications; only generitypes of living material are listed

(c) if coloured red, indicates the location of the reference sequence representing the generic type
material deposited in a non-viable state
as required under the rules of the ICN

(d) the number of sequences of the type species in parentheses

(e) group with strains identified as type spp. of Funiculus, Trichocoleus and Coleofasciculus

(f) black: reference strain not provided

($) Guiry, M.D. & Guiry, G.M. 2025. AlgaeBase. World-wide electronic publication, University of
Galway. https://www.algaebase.org



The following strains are represented by isolates whose 16S rRNA sequences are of very poor
quality (containing many mismatches in the paired stems of many helices).
This artificially increases their apparent distance from other organisms, creating false genera.

Most have been omitted from our 16S rRNA trees and should be considered invalid:



Hasler et al. 2018 (Phytotaxa 362, 173-186):

Lightfootiella montana G2.3

Lightfootiella montana G4.1


Panou and Gkelis 2021 (Mol Phylogenet Evol 166, 107322):

Speleotes anchialus TAU-MAC 1118

Geitleria calcarea TAU-MAC 0118

Radiocystis geminata TAU-MAC 1214

Olisthonema eestii TAU-MAC 3518

Olisthonema eestii TAU-MAC 3318

Speos fyssasii TAU-MAC 5718

Speos fyssasii TAU-MAC 5518

Iphianassa zackieohae TAU-MAC 2318

Haliplanktos anthonyquinnii TAU-MAC 3018


Jasser et al. 2022 (Mol Phylogenet Evol 170, 107454):

Amphirytos necridicus TAU-MAC 0315