157,530 species and infraspecific names are in the database, 22,209 images, 60,943 bibliographic items, 458,278 distributional records.

Cyanonephron B.Hickel, 1985

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

Holotype species: Cyanonephron styloides B.Hickel

Original publication and holotype designation: Hickel, B. (1985). Cyanonephron styloides gen. et sp, nov., a new chroococcal blue-green alga (Cyanophyta) from a brackish lake. Algological Studies/Archiv für Hydrobiologie, Supplement Volumes 38-39: 111-118.

Taxonomic status: currently recognized as a distinct genus.

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

Description: Unicellular-colonial; colonies microscopic (to 29 _m diam.), free-floating, more or less spherical, oval to irregular, mucilaginous, with cells distant from one another, arranged more or less in a layer near the surface of the colony, connected by radially, pseudodichotomously branched, hyaline, mucilaginous stalks, radiating from the center of the colony; solitary cells surrounded by a thin layer of mucilage, but whole colony is not enveloped by a scarce, hyaline, diffluent slime. Cells elongated, slightly arcuated, with few peripherally and concentrically arranged thylakoids along the cell walls, joined to the stalks by their longer side, pale blue-green, yellowish green or greyish blue-green, without conspicuous inclusions or aerotopes. Cell division only in one direction in successive generations, perpendicular to the longer axis of the cell. Colonies dissociate into smaller cell groups to solitary cells. In fresh or slightly saline waters, described from large lakes in Germany (Schleswig Holstein) and in southern Sweden, usually near the seashore; probably widely distributed.

Information contributed by: J. Komárek. The most recent alteration to this page was made on 3 Mar 2015 by M.D. Guiry.

Numbers of names and species: There are 2 species names in the database at present, of which 2 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):

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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: 31 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=44858

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Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 18 February 2020.

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