163,924 species and infraspecific names are in the database, 22,783 images, 63,106 bibliographic items, 484,278 distributional records.

Choricystis (Skuja) Fott, 1976

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Chlorophyta infrakingdom
Phylum Chlorophyta
Subphylum Chlorophytina
Class Trebouxiophyceae
Order Trebouxiophyceae ordo incertae sedis
Family Coccomyxaceae

Holotype species: Choricystis minor (Skuja) Fott

Original publication and holotype designation: Fott, B. (1976). Choricystis, eine neue Gattung der Chlorococcales (Chlorophyceae). Archiv für Hydrobiologie Supplement Algological Studies 49: 382-388.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Tsarenko, P.M. (2011). Trebouxiophyceae. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 61-108. Ruggell: A.R.A. Gantner Verlag K.-G..

Taxonomic notes
Karsten et al. (2005: fig. fig. 1), Neustupa et al. (2009: fig. 28) and Neustupa (2011: fig. 22) include this in the Choricystis/Botryococcus clade (Trebouxiophyceae). Darienko et al. (2010: fig.1) place it in the Choricystis-clade. - (18 Mar 2011) - Wendy Guiry

Based on Coccomyxa sect. Choricystis Skuja, Symb. Bot. Upsal. 9(3): 146. 1948. - (5 Aug 2011) - M.D. Guiry

Description: Unicellular plants with oval to reniform to pyriform cells, 1-8 x 1-3.5 µm. Cell with smooth walls, not embedded in mucilage envelope. Cells uninucleate; chloroplast single and parietal, pyrenoids absent. Asexual reproduction by autospores, 2 (rarely 4) per sporangium, released by rupture of parental cell wall. Flagellated stages and sexual reproduction absent. Choricystis planktonic or in littoral, reported from Europe, north Africa and Cuba. The small cell size, production of 2 autospores and absence of mucilage envelope diagnostic of Choricystis. Species distinguished based on cell size and shape. Unicellular plants with oval to reniform to pyriform cells, 1-8 x 1-3.5 µm. Cell with smooth walls, not embedded in mucilage envelope. Cells uninucleate; chloroplast single and parietal, pyrenoids absent. Asexual reproduction by autospores, 2 (rarely 4) per sporangium, released by rupture of parental cell wall. Flagellated stages and sexual reproduction absent. Choricystis planktonic or in littoral, reported from Europe, north Africa and Cuba. The small cell size, production of 2 autospores and absence of mucilage envelope diagnostic of Choricystis. Species distinguished based on cell size and shape.

Information contributed by: D. Garbary & F. Hindák. The most recent alteration to this page was made on 21 Dec 2011 by M.D. Guiry.

Numbers of names and species: There are 18 species names in the database at present, as well as 1 infraspecific names. Of the species names, 9 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
Friedl, T. & O'Kelly, C.J. (2002). Phylogenetic relationships of green algae assigned to the genus Planophila (Chlorophyta): evidence from 18S rDNA sequence data and ultrastructure. European Journal of Phycology 37: 373-384.

Darienko, T., Gustavs, L., Mudimu, O., Menendez, C.R., Schumann, R., Karsten, U., Friedl, T. Proschold, T. (2010). Chloroidium, a common terrestrial coccoid green alga previously assigned to Chlorella (Trebouxiophyceae, Chlorophyta). European Journal of Phycology 45(1): 79-95.

Karsten, U., Friedl, T., Schumann, R., Hoyer, K. & Lembcke, S. (2005). Mycosporine-like amino acids and phylogenies in green algae: Prasiola and its relatives from the Trebouxiophyceae (Chlorophyta). Journal of Phycology 41: 557-566.

Neustupa, J., Nemcová, Y., Eliéas, M. & Skaloud, P. (2009). Kalinella bambusicola gen. etsp. nov. (Trebouxiophyceae, Chlorophyta), a novel coccoid Chlorella-like subaerial alga from Southeast Asia. Phycological Research 57(3): 159-169.

Neustupa, J., Eliás, M., Skaloud, P., Nemcová, Y. & Sejnohová, L. (2011). Xylochloris irregularis gen. et sp. nov. (Trebouxiophyceae, Chlorophyta), a novel subaerial coccoid green alga. Phycologia 50(1): 57-66.

Sluiman, H.J., Guihal, C. & Mudimu, O. (2008). Assessing phylogenetic affinities and species delimitations in Klebsormidiales (Streptophyta): nuclear-encoded rDNA phylogenies and ITS secondary structure models in Klebsormidium, Hormidiella, and Entransia. Journal of Phycology 44(1): 183-195.

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: 01 October 2002 by M.D. Guiry

Verified by: 20 December 2011 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44977

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 27 October 2021.

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