Catena Chodat, 1900

Holotype species: Catena viridis Chodat

Original publication and holotype designation: Chodat, R. (1900). Sur trois genres nouveaux de Protococcoidées et sur la florule planktonique d'un Étang du Danemark. Mémoires de l'Herbier Boissier 8(17): 1-10.

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Description: Filaments short, 4-8 (-16) celled, straight or bent, ensheathed by delicate mucilaginous envelope of varying thickness. Cell united by adherence of conical processes of transverse cell walls. Cell poles, sporadically also middle portions of cells, normally incrusted with brown, often unequal rings or caps effecting distinct widening, or, instead or rings, with irregularly-arranged minute stick-like granules. Cells cylindrical to oval. Chloroplast single, parietal and band-shaped, occupying not more than half cell periphery, pyrenoids absent. Propagation of filaments by fragmentation. Multiplication of cells by vegetative cell division. Method of sexual reproduction unknown. Catena planktonic from various freshwater habitats in central Europe and USA. Catena initially assigned to Protococcales (Chlorococcales); because of multiplication by vegetative cell division, Catena later assigned to Ulotrichales. It resembles Stichococcus by having a short celled, weakly filamentous growth habit, and Hortobagyiella by presence of incrustations on cell surface.

Information contributed by: G.M. Lokhorst. The most recent alteration to this page was made on 2013-03-19 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Krienitz, L., Hegewald, E., Hepperle, D. & Wolf, M. (2003). The systematics of coccoid green algae: 18S rRNA gene sequence data versus morphology. Biologia, Bratislava 58: 437-446.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44283

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 19 March 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 November 2024