159,019 species and infraspecific names are in the database, 22,477 images, 61,663 bibliographic items, 460,430 distributional records.

Oocystopsis Heynig, 1991

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

Holotype species: Oocystopsis granulata (Hortobágyi) Heynig

Original publication and holotype designation: Heynig, H. (1991). Oocystopsis n.g. – eine neue Gattung der Chlorophyceae (Chlorellales, Oocystaceae). Oocystopsis n.g. – a new genus of Chlorophyceae (Chlorellales, Oocystaceae) . Archiv für Protistenkunde 139: 291-294, 7 figs.

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as feminine.

Description: Cells occasionally solitary, usually 208 within an ovoid to spherical mucilage envelope up to 40 &m in diameter which bears numerous superficial granulations. Cells ovoid, 8-12-(14) x 6-8-(11.2) &m, the cell walls smooth. Chloroplasts 1-2, parietal with one pyrenoid. Asexual reproduction by (2)-4-8 autospores. Sexual reproduction and flagellated stages unknown. Oocystopsis, planktonic, known only from freshwater in Germany and Hungary. Differs from Oocystis in having granulations on the mucilage envelope. Similar to Granulocystis and Granulocystopsis but lacks granulate cell walls characteristic of these two genera. Cells occasionally solitary, usually 208 within an ovoid to spherical mucilage envelope up to 40 &m in diameter which bears numerous superficial granulations. Cells ovoid, 8-12-(14) x 6-8-(11.2) &m, the cell walls smooth. Chloroplasts 1-2, parietal with one pyrenoid. Asexual reproduction by (2)-4-8 autospores. Sexual reproduction and flagellated stages unknown. Oocystopsis, planktonic, known only from freshwater in Germany and Hungary. Differs from Oocystis in having granulations on the mucilage envelope. Similar to Granulocystis and Granulocystopsis but lacks granulate cell walls characteristic of these two genera.

Information contributed by: G. Dillard. The most recent alteration to this page was made on 30 Jan 2017 by M.D. Guiry.

Numbers of names and species: There are 2 species names in the database at present, of which 1 has 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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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: 16 April 2003 by M.D. Guiry

Verified by: 30 January 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=45918

Citing AlgaeBase
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 20 September 2020.

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