163,335 species and infraspecific names are in the database, 22,769 images, 62,932 bibliographic items, 478,466 distributional records.

Cyanobium R.Rippka & G.Cohen-Bazire, 1983

Classification:
Empire Prokaryota
Kingdom Eubacteria
Subkingdom Negibacteria
Phylum Cyanobacteria
Class Cyanophyceae
Subclass Synechococcophycidae
Order Synechococcales
Family Synechococcaceae

Holotype species: Cyanobium gracile Rippka & Cohen-Bazire

Original publication and holotype designation: Rippka, R. & Cohen-Bazire, G. (1983). The Cyanobacteriales: a legitimate order based on the type strain Cyanobacterium stanieri?. Annales de l'Institut Pasteur, Microbiologie 134B: 21-36.
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Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Komárek, J., Kaštovský, J., Mares, J. & Johansen, J.R. (2014). Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach. Preslia 86: 295-335.

Description: Cells solitary or in twos after division, not in colonies, small, usually about 1-2(4) µm long and about 1(-3) µm wide, without gelatinous envelopes, oval, ellipsoid to shortly rod-shaped, usually with well visible chromatoplasma. Thylakoids are arranged panetally along the cell walls. Obligatory photoautotroph. Emended description (Komárek et al., 2020:183).

Information contributed by: J. Komárek. The most recent alteration to this page was made on 9 Apr 2021 by G.M. Guiry.

Comments: GC-content of the DNA = approx. 66-71 mol. percent. Without filamentous involution cells.

Numbers of names and species: There are 14 species names in the database at present, of which 14 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

References
Komárek, J. (2003). Coccoid and colonial cyanobacteria. In: Freshwater Algae of North America. Ecology and Classification. (Wehr, J.D. & Sheath, R.G. Eds), pp. 59-116. Amsterdam Boston London New York Oxford Paris San Diego San Fransisco Singapore Sydney Tokyo: Academic Press.

Komárek, J., Johansen, J.R., Smarda, J. & Strunecky, O. (2020). Phylogeny and taxonomy of Synechococcus-like cyanobacteria. Fottea 20(2): 171-191, 6 figures.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Created: 28 May 2002 by Elizabeth Moran

Verified by: 03 March 2015 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44850

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 19 September 2021.

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