Tetraedron Kützing, 1845: 129
Holotype species: Tetraedron regulare Kützing
Original publication and holotype designation:Kützing, F.T. (1845). Phycologia germanica, d. i. Deutschlands Algen in bündigen Beschreibungen. Nebst einer Anleitung zum Untersuchen und Bestimmen dieser Gewächse für Anfänger. pp. i-x, 1-340. Nordhausen: W. Köhne.
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Taxonomic status: currently recognized as a distinct genus.
Nomenclatural notes
Both INA and ING list T. regulare Kützing 1845: 129 as the type species. - (2 Jul 2012) - M.D. Guiry
Description: Cells solitary and free-floating, flattened or triangular, quadrangular or polygonal; old cells nearly globose. Cell wall relatively thin, finely granulated when observed with light microscopy; ultrastructurally with inner polysaccharide and outer acetoresistant layer. The cell surface of young cells provided with irregular net, which disappears in old cells. Cell uninucleate with centrioles always present; chloroplast single, entirely filling the cell; pyrenoid single with homogeneous stroma and surrounded by starch envelope. Asexual reproduction by autospores, 2-4-8 per cell; released by rupture of parental cell. Flagellated stages and sexual reproduction unknown. Tetraedron planktonic in freshwater; cosmopolitan. Most species in genus with uncertain status with few species well defined. Species distinguished based on details of cell size and shape.
NCBI Nucleotide Sequences
Numbers of names and species: There are 123 species (and infraspecific) names in the database at present, of which 43 have been flagged as currently accepted taxonomically.
Names: ('C' indicates a name that is currently 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):
Tetraedron acutum Playfair C
Tetraedron acutum var. rectilineare Playfair C
Tetraedron armatum (Reinsch) De Toni P
Tetraedron arthrodesmiforme Woloszynska C
Tetraedron arthrodesmiforme var. contortum Woloszynska C
Tetraedron asymmetricum Prescott C
Tetraedron bifidum Kiselev C
Tetraedron bifurcatum (Wille) Lagerheim C
Tetraedron bitridens Beck-Mannagetta S
Tetraedron caudatum var. incisum (Lagerheim) Brunnthaler S
Tetraedron caudatum var. punctatum Lagerheim S
Tetraedron caudatum var. australe Playfair C
Tetraedron caudatum (Corda) Hansgirg C
Tetraedron caudatum var. longispinum Lemmermann P
Tetraedron conicum Playfair C
Tetraedron constrictum G.M.Smith C
Tetraedron cruciatum (Wallich) W.& G.S.West P
Tetraedron cruciforme Playfair C
Tetraedron curvatum (West) Wille P
Tetraedron enorme (Ralfs) Hansgirg S
Tetraedron enorme var. pentaedricum Prescott C
Tetraedron floridense West & G.S.West C
Tetraedron gigas (Wittrock) Hansgirg S
Tetraedron gigas f. tetraedricum Nordstedt C
Tetraedron gracile (Reinsch) Hansgirg C
Tetraedron granulosum Playfair C
Tetraedron hastatum (Reinsch) Hansgirg S
Tetraedron hastatum var. elegans Playfair C
Tetraedron hastatum var. palatinum (Schmidle) Lemmermann S
Tetraedron hastatum var. triangulare A.M.Scott & Prescottt C
Tetraedron hastatum var. simplex A.M.Scott & Prescott C
Tetraedron hemisphaericum Skuja C
Tetraedron hortense Playfair C
Tetraedron incus var. irregulare G.M.Smith S
Tetraedron incus (Teiling) G.M.Smith C
Tetraedron incus f. decolorata (Deflandre) Philipose P
Tetraedron limneticum Borge S
Tetraedron limneticum var. gracile Prescott C
Tetraedron lobulatum var. triangulare Playfair C
Tetraedron lobulatum var. sydneyense (Playfair) Playfair P
Tetraedron lobulatum var. polyfurcatum G.M.Smith C
Tetraedron lobulatum var. decussatum (Reinsch) Playfair P
Tetraedron lobulatum var. crassum Prescott C
Tetraedron lobulatum (Nägeli) Hansgirg C
Tetraedron longispinum (Perty) Playfair P
Tetraedron lunula (Reinsch) Hansgirg C
Tetraedron mediocris Hindák C
Tetraedron minimum var. scrobiculatum Lagerheim P
Tetraedron minimum var. apiculato-scrobiculatum Skuja S
Tetraedron minimum var. [apiculato-scrobiculatum] f. polypapillatum Hortobagyi C
Tetraedron minimum f. trigonum W.Krieger C
Tetraedron minimum var. longispinum Deflandre P
Tetraedron minimum var. [apiculato-scrobiculatum] f. elegans Hortobágyi C
Tetraëdron minimum var. tetralobulatum Reinsch C
Tetraedron minimum var. rectilineare Playfair C
Tetraedron minimum (A.Braun) Hansgirg C
Tetraedron minimum var. australe Playfair C
Tetraedron minimum var. morsum (West & G.S.West) Playfair P
Tetraedron minimum var. pinacidium (Reinsch) Playfair P
Tetraedron minimum var. minimum P
Tetraedron minutissimum Korshikov C
Tetraedron minutum (A.Braun) Hansgirg P
Tetraedron muticum (A.Braun) Hansgirg C
Tetraedron muticum f. hispanica P.González C
Tetraedron muticum var. asteroidea (A.Br.) Hansgirg P
Tetraedron muticum f. punctulatum (Reinsch) De Toni P
Tetraedron obtusum Playfair C
Tetraedron octaedricum (Reinsch) Hangirg P
Tetraedron pachydermum (Reinsch) Hansgirg P
Tetraedron pentaedricum f. minima West & G.S.West C
Tetraedron pentaedricum West & G.S.West C
Tetraedron planctonicum G.M.Smith C
Tetraedron platyisthmum (W.Archer) G.S.West S
Tetraedron proteiforme (W.B.Turner) Brunnthaler C
Tetraedron proteiforme var. granulatum Hortobagyi P
Tetraedron pusillum (Wallich) West & G.S.West C
Tetraedron quadratum f. minor Reinsch C
Tetraedron quadratum (Reinsch) Hansgirg S
Tetraedron quadratum f. excavata Playfair C
Tetraedron quadratum f. minus-obtusum Reinsch C
Tetraedron quadrilobum G.M.Smith S
Tetraedron rectangulare A.M.Scott & Prescott C
Tetraedron regulare var. bifurcatum Wille P
Tetraedron regulare f. majus Reinsch C
Tetraedron regulare Kützing S - type
Tetraedron regulare var. granulatum Prescott C
Tetraedron regulare var. papilliferum (Schröder) Playfair C
Tetraedron regulare var. torsum Brunnthaler C
Tetraedron regulare var. inerme Playfair C
Tetraedron regulare var. incus Teiling S
Tetraedron regulare f. major Prescott C
Tetraedron regulare var. octaedricum (Reinsch) Playfair P
Tetraedron regulare var. [incus] f. major Prescott C
Tetraedron reticulatum (Reinsch) Hansgirg P
Tetraedron schmidlei var. euryacanthum (Schmidle) Lemmermann S
Tetraedron schmidlei (Schröder) Lemmermann S
Tetraedron sexconicum C.C.Jao & Z.Y.Hu C
Tetraedron simmeri Schmidle P
Tetraedron spinulosum var. excavatum Playfair S
Tetraedron spinulosum Schmidle S
Tetraedron staurastroides (West) Wille P
Tetraedron striatum Playfair C
Tetraedron tetragonum var. arthrodesmiforme G.S.West U
Tetraedron tetragonum (Nägeli) Hansgirg S
Tetraedron tetragonum f. arthrodesmiforme G.S.West C
Tetraedron triangulare Korshikov C
Tetraedron triappendiculatum (Bernard) Wille S
Tetraedron trigonum f. pentagona Nägeli P
Tetraedron trigonum var. papilliferum (Schröder) Lemmermann S
Tetraedron trigonum var. inerme Hansgirg C
Tetraedron trigonum var. mammillatum Playfair C
Tetraedron trigonum var. setigerum (W.Archer) Lemmermann S
Tetraedron trigonum f. tetragona Nägeli P
Tetraedron trigonum (Nägeli) Hansgirg C
Tetraedron trigonum var. gracile (Reinsch) De Toni S
Tetraedron trilobulatum (Reinsch) Hansgirg C
Tetraedron tumidulum (Reinsch) Hansgirg C
Tetraedron verrucosum G.M.Smith C
Tetraedron victoriae Woloszynska C
Tetraedron victorieae var. major Smith C
Tetraedron vulgare f. major Reinsch C
Tetraedron vulgare Kützing C
Tetraedron wasteneysii Playfair C
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.
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: http://www.algaebase.org/search/genus/detail/?genus_id=43394
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 25 May 2013.
Algaebase taxon LSID: urn:lsid:algaebase.org:taxname:6990
