Keratococcus Pascher, 1915

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. pp. [i]-iv, [1]-20. Jena: Verlag von Gustav Fischer.

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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 2011-12-20 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

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..

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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.

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

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 20 December 2011. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 November 2024