156,040 species and infraspecific names are in the database, 21,990 images, 60,314 bibliographic items, 442,793 distributional records.

Keratococcus Pascher, 1915

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

Holotype species: Keratococcus bicaudatus (A.Braun ex Rabenhorst) J.B.Petersen

Original publication and holotype designation: Pascher, A. (1915). Die Süsswasser-Flora Deutschlands, Österreichs und der Schweiz. Heft 5. Chlorophyceae II. . Jena: Gustav Fischer.

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..

Description: Thalli unicellular without mucilage production. Cells elongate-fusiform, 9-70 x 2.5-9 µm, straight or curved or irregularly bent, with terminal, attentuate processes. Cell walls smooth. Cells uninucleate; chloroplast single, parietal and band-shaped, pyrenoid single but appearing multiple prior to autospore formation. Asexual reproduction by autospores, 2-4 per sporangium, released by tear in cell wall. Flagellated stages and sexual reproduction unknown. Keratococcus plantonic, in littoral, or terrestrial on moist substrata; reported only from Europe. K. mucicola may appear colonial when inhabiting mucilage produced by other organisms. Generic concepts vary widely among authors, e.g., Hindák's concept of Kerratococcus includes five species that Komárek and Fott place in Chlorolobion. Thalli unicellular without mucilage production. Cells elongate-fusiform, 9-70 x 2.5-9 µm, straight or curved or irregularly bent, with terminal, attentuate processes. Cell walls smooth. Cells uninucleate; chloroplast single, parietal and band-shaped, pyrenoid single but appearing multiple prior to autospore formation. Asexual reproduction by autospores, 2-4 per sporangium, released by tear in cell wall. Flagellated stages and sexual reproduction unknown. Keratococcus plantonic, in littoral, or terrestrial on moist substrata; reported only from Europe. K. mucicola may appear colonial when inhabiting mucilage produced by other organisms. Generic concepts vary widely among authors, e.g., Hindák's concept of Kerratococcus includes five species that Komárek and Fott place in Chlorolobion.

Information contributed by: D. Garbary & F. Hindák. The most recent alteration to this page was made on 20 Dec 2011 by M.D. Guiry.

Numbers of names and species: There are 17 species names in the database at present, as well as 1 infraspecific names. Of the species names, 7 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: 20 December 2011 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44258

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 23 August 2019.

SITE © 1996 - 2019 M.D. Guiry. All rights reserved.

Website Design : 249 Design Studio