153,871 species and infraspecific names are in the database, 21,012 images, 59,576 bibliographic items, 413,474 distributional records.

Quadricoccus Fott, 1948

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Chlorophyta infrakingdom
Phylum Chlorophyta
Subphylum Chlorophytina
Class Trebouxiophyceae
Order Chlorellales
Family Oocystaceae

Lectotype species: Quadricoccus verrucosus Fott

Original publication:Fott, B. (1948). Taxonomical studies on Chlorococcales. II. Studia Botanica Cechoslovaca 9: 6-17.

Type designated in Krienitz, L. & Bock, C. (2011). Elongatocystis ecballocystiformis gen. et comb. nov., and some reflections on systematics of Oocystaceae (Trebouxiophyceae, Chlorophyta). Fottea 11(2): 271-278.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Krienitz, L. & Bock, C. (2011). Elongatocystis ecballocystiformis gen. et comb. nov., and some reflections on systematics of Oocystaceae (Trebouxiophyceae, Chlorophyta). Fottea 11(2): 271-278.

Description: Thalli spherical to irregular, microscopic colonies to 30 µm diameter, with 4-16 to 64 cells embedded in structureless mucilage. Cells ovoid, 5-12 µm in length with smooth or granular cell walls. Cells uninucleate with single parietal chloroplast in mid portion of cell and single pyrenoid. Asexual reproduction by autospores, 2 or mostly 4 per mother cell, released by longitudinal rupture of parental cell wall and remaining attached by the ends or mid portions of cells to wall remains. Flagellated stages and sexual reproduction unknown. Quadricoccus planktonic, common in rivers, fish ponds and lakes; reported from Europe and North America.

Information contributed by: F. Hindák & D. Garbary. The most recent alteration to this page was made on 3 Sep 2014 by M.D. Guiry.

Numbers of names and species: There are 5 species names in the database at present, as well as 1 infraspecific names. Of the species names, 5 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
Cambra Sánchez, J., Álvarez Cobelas, M. & Aboal Sanjurjo, M. (1998). Lista florística y bibliográfica de los clorófitos (Chlorophyta) de la Península Ibérica, Islas Baleares e Islas Canarias. pp. 1-614. Burgos: Asociación Española de Limnología.

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: 23 April 2002 by M.D. Guiry

Verified by: 03 September 2014 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44270

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 14 December 2018.

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