Thorakochloris Pascher, 1932

Holotype species: Thorakochloris tetras Pascher

Original publication: Pascher, A. (1932). Drei neue Protococcalengattungen. Archiv für Protistenkunde 76: 409-419.

Description: Cells rarely solitary, typically in 4-16-many-celled colonies within a colorless and structure-less mucilaginous envelope. Colonies tetrahedral to spherical, up to 150 &m in diameter. Cells spherical, oval or reniform, 5-8 x 3-5 &m or up to 15 &m in diameter. Chloroplast single and parietal, without a pyrenoid. Asexual reproduction by formation of 4 usually tetrahedrally disposed autospores, released upon rupture of the mother cell wall into four fragments, the fragments persistent within the mother colony's mucilage envelope; compound colonies common. Sexual reproduction and flagellated stages unknown. Thorakochloris planktonic or metaphytic in freshwater; known from Austria, Czechoslovakia, Denmark, France and Germany. Similar to Radiococcus from which it differs principally by the presence of 4 persistent mother cell fragments within the mucilage envelope of each daughter colony; similar to Coenochloris from which it differs principally by rupture of the mother cell walls into 4 more or less equal fragments rather than into 2 fragments. T. planktonica and T. nygaardii (both with pyrenoids) transferred to Hindakochloris. Cells rarely solitary, typically in 4-16-many-celled colonies within a colorless and structure-less mucilaginous envelope. Colonies tetrahedral to spherical, up to 150 &m in diameter. Cells spherical, oval or reniform, 5-8 x 3-5 &m or up to 15 &m in diameter. Chloroplast single and parietal, without a pyrenoid. Asexual reproduction by formation of 4 usually tetrahedrally disposed autospores, released upon rupture of the mother cell wall into four fragments, the fragments persistent within the mother colony's mucilage envelope; compound colonies common. Sexual reproduction and flagellated stages unknown. Thorakochloris planktonic or metaphytic in freshwater; known from Austria, Czechoslovakia, Denmark, France and Germany. Similar to Radiococcus from which it differs principally by the presence of 4 persistent mother cell fragments within the mucilage envelope of each daughter colony; similar to Coenochloris from which it differs principally by rupture of the mother cell walls into 4 more or less equal fragments rather than into 2 fragments. T. planktonica and T. nygaardii (both with pyrenoids) transferred to Hindakochloris.

Information contributed by: G. Dillard. The most recent alteration to this page was made on 2015-05-12 by Salvador Valenzuela Miranda.

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

Most recent taxonomic treatment adopted: Tsarenko, P.M. (2011). Sphaeropleales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 280-355. 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=46361

Citing AlgaeBase
Cite this record as:
Salvador Valenzuela Miranda in Guiry, M.D. & Guiry, G.M. 12 May 2015. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 April 2024