|  |  |  |  | 
 |  | Kingdom | Bacteria Cavalier-Smith, 2002
 – bactéries, bacteria, bacterias, bactérias |  | 
|  | Subkingdom | Negibacteria Cavalier-Smith, 2002 |  | 
|  | Phylum | Cyanobacteriota Oren, Mares & Rippka |  | 
|  | Class | Cyanophyceae Schaffner
 – cyanophytes, blue-green algae |  | 
|  | Order | Chroococcales Schaffner |  | 
|  | Family | Chroococcaceae Nägeli |  | 
|  | Genus | Chroococcus Nägeli |  | 
        
          |  |  | Direct Children: |  | 
 |  | Species | Chroococcus aeruginosus N.L. Gardner |  | 
|  | Species | Chroococcus alpinus Schmidle |  | 
|  | Species | Chroococcus atrochalybeus Hansgirg |  | 
|  | Species | Chroococcus aurantio-fuscus (Kützing) Rabenhorst |  | 
|  | Species | Chroococcus aurantius (C. Agardh) Wille |  | 
|  | Species | Chroococcus aureus (Kützing) Rabenhorst |  | 
|  | Species | Chroococcus bernardii Oye |  | 
|  | Species | Chroococcus catenatus Komárek & E. Novelo |  | 
|  | Species | Chroococcus cohaerens (Brébisson) Nägeli |  | 
|  | Species | Chroococcus consociatus Hariot |  | 
|  | Species | Chroococcus constrictus N.L. Gardner |  | 
|  | Species | Chroococcus crassus (Kützing) Nägeli |  | 
|  | Species | Chroococcus cronbergae Komárek & E. Novelo |  | 
|  | Species | Chroococcus cronbergiae Komárek & E. Novelo |  | 
|  | Species | Chroococcus cubicus N.L. Gardner |  | 
|  | Species | Chroococcus cumulatus H. Bachmann |  | 
|  | Species | Chroococcus decoloratus Migula |  | 
|  | Species | Chroococcus deltoides Komárek & E. Novelo |  | 
|  | Species | Chroococcus dispersus (Keissler) Lemmermann |  | 
|  | Species | Chroococcus distans (G.M. Smith) Komárková-Legnerová & G. Cronberg |  | 
|  | Species | Chroococcus endophyticus J.J. Copeland |  | 
|  | Species | Chroococcus epiphyticus C.-C. Jao |  | 
|  | Species | Chroococcus ercegovicii Komárek & Anagnostidis |  | 
|  | Species | Chroococcus giganteus West |  | 
|  | Species | Chroococcus globosus (Elenkin) Hindák |  | 
|  | Species | Chroococcus glomeratus (Meneghini) Forti |  | 
|  | Species | Chroococcus goetzei Schmidle |  | 
|  | Species | Chroococcus gomontii Nygaard |  | 
|  | Species | Chroococcus hansgirgii Schmidle |  | 
|  | Species | Chroococcus heanogloios N.L. Gardner |  | 
|  | Species | Chroococcus helveticus Nägeli |  | 
|  | Species | Chroococcus huberi G. De Toni |  | 
|  | Species | Chroococcus indicus Zeller |  | 
|  | Species | Chroococcus irregularis Huber-Pestalozzi |  | 
|  | Species | Chroococcus kerguelensis Wille |  | 
|  | Species | Chroococcus lithophilus Ercegovic |  | 
|  | Species | Chroococcus macrococcus (Kützing) Rabenhorst |  | 
|  | Species | Chroococcus major Komárek & Komárková-Legnerová |  | 
|  | Species | Chroococcus mediocris N.L. Gardner |  | 
|  | Species | Chroococcus membraninus (Meneghini) Nägeli |  | 
|  | Species | Chroococcus microcystoideus West & G.S. West |  | 
|  | Species | Chroococcus minimus (Keissler) Lemmermann |  | 
|  | Species | Chroococcus minor (Kützing) Nägeli |  | 
|  | Species | Chroococcus minutissimus N.L. Gardner |  | 
|  | Species | Chroococcus minutus (Kützing) Nägeli |  | 
|  | Species | Chroococcus mipitanensis (Woloszynska) Geitler |  | 
|  | Species | Chroococcus molischii J. Schiller |  | 
|  | Species | Chroococcus montanus Hansgirg |  | 
|  | Species | Chroococcus multicoloratus R.D. Wood |  | 
|  | Species | Chroococcus muralis N.L. Gardner |  | 
|  | Species | Chroococcus mutisii P. González |  | 
|  | Species | Chroococcus nanoplanticus M.T.P. Azevedo, Sant'Anna, P.A.C. Senna, Komárek & Komárková |  | 
|  | Species | Chroococcus obliteratus P. Richter |  | 
|  | Species | Chroococcus occidentalis (N.L. Gardner) Komárek & Komárková-Legnerová |  | 
|  | Species | Chroococcus pallidus Nägeli |  | 
|  | Species | Chroococcus planctonicus Bethge |  | 
|  | Species | Chroococcus polyedriformis Schmidle |  | 
|  | Species | Chroococcus prescottii Drouet & Daily |  | 
|  | Species | Chroococcus pulcherrimus H. Welsh |  | 
|  | Species | Chroococcus purpureus J.W. Snow |  | 
|  | Species | Chroococcus pyriformis A.W. Bennett |  | 
|  | Species | Chroococcus quaternarius Zalessky |  | 
|  | Species | Chroococcus rechingeri Wille |  | 
|  | Species | Chroococcus reeuwijkanus Joosten |  | 
|  | Species | Chroococcus refractus R.D. Wood |  | 
|  | Species | Chroococcus rochei Virieux |  | 
|  | Species | Chroococcus rubrapunctus Wolle |  | 
|  | Species | Chroococcus rufescens (Kützing) Nägeli |  | 
|  | Species | Chroococcus scherffelianus Kol |  | 
|  | Species | Chroococcus schizodermaticus West |  | 
|  | Species | Chroococcus smaragdinus Hauck |  | 
|  | Species | Chroococcus solitarius Eichler |  | 
|  | Species | Chroococcus sonorensis Drouet & Daily |  | 
|  | Species | Chroococcus spelaeus Ercegovic |  | 
|  | Species | Chroococcus splendidus C.-C. Jao |  | 
|  | Species | Chroococcus submarinus (Hansgirg) Kovácik |  | 
|  | Species | Chroococcus subnudus (Hansgirg) G. Cronberg & Komárek |  | 
|  | Species | Chroococcus subsphaericus N.L. Gardner |  | 
|  | Species | Chroococcus subtilissimus Skuja |  | 
|  | Species | Chroococcus subviolaceus (Wille) Gama Jr., Laughinghouse IV & Sant'Anna |  | 
|  | Species | Chroococcus tenacoides J.J. Copeland |  | 
|  | Species | Chroococcus tenax (O. Kirchner) Hieronymus |  | 
|  | Species | Chroococcus thermalis (Meneghini) Nägeli |  | 
|  | Species | Chroococcus turgidus (Kützing) Nägeli |  | 
|  | Species | Chroococcus turicensis (Nägeli) Hansgirg |  | 
|  | Species | Chroococcus vacuolatus Skuja |  | 
|  | Species | Chroococcus varius A. Braun |  | 
|  | Species | Chroococcus verrucosus Krieger |  | 
|  | Species | Chroococcus violaceus Rabenhorst |  | 
|  | Species | Chroococcus westii J.B. Petersen |  | 
|  | Species | Chroococcus yellowstonensis J.J. Copeland |  | 
        
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