Chrysococcus Klebs, 1892

Holotype species: Chrysococcus rufescens Klebs

Original publication and holotype designation: Klebs, G.A. (1892). Flagellatenstudien. Theil II. Zeitschrift für wissenschaftliche Zoologie 55(3): 352-445, plates 17-18.

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Description: Cell surrounded with a globular or almost globular lorica encrusted by Fe-Mn compounds. It hasa smooth or sculptured surface, in a few species long spines. Lorica has one anterior porus, often also a posterior porus, in a few species additional pores. Cell has 2 flagella, a long hairy flagellum protruding through the apical porus and a short smooth flagellum remaining within the lorica, much reduced and close to the stigma (when present); one-2 or more chloroplasts. Reproduction by longitudinal division within the lorica, one daughter cell escapes through the porus and forms a new lorica. Stomatocysts formed inside the lorica, in some species after escape of the cell from the lorica, remaining attached to it. Sexual reproduction not observed. Found in freshwater phytoplankton; very common and widely distributed. Tetraedriella patiens Ramberg, formerly placed among the Xanthophyceae has been suggestedas member of this genus. Its cyst stage is believed to be "Chrysastrella furcata", previously placed in the dubious family "Chrysostomataceae", provided with long bifurcate spines (Nicholls, 1981).

Information contributed by: J. Kristiansen. The most recent alteration to this page was made on 2022-01-22 by M.D. Guiry.

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

Gender: This genus name is currently treated as masculine.

Most recent taxonomic treatment adopted: Kawai, H. & Nakayama, T. (2015). Introduction (Heterokontobionta p.p.), Cryptophyta, Dinophyta, Haptophyta, Heterokontophyta (except Coscinodiscophyceae, Mediophyceae, Fragilariophyceae, Bacillariophyceae, Phaeophyceae, Eustigmatophyceae), Chlorarachniophyta, Euglenophyta. In: Syllabus of plant families. Adolf Engler's Syllabus der Pflanzenfamilien. Ed. 13. Phototrophic eukaryotic Algae. Glaucocystophyta, Cryptophyta, Dinophyta/Dinozoa, Haptophyta, Heterokontophyta/Ochrophyta, Chlorarachnniophyta/Cercozoa, Chlorophyta, Streptophyta p.p. (Frey, W. Eds), pp. 11-64, 103-139. Stuttgart: Borntraeger Science Publishers.

Comments: Kristiansen & Preisig (2001: 9) record this genus as alternately being a member of the family Chrysococcaceae Lemmerman 1899.

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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=43778

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 22 January 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 November 2024