Pyramichlamys H.Ettl & O.Ettl, 1959

Holotype species: Pyramichlamys quadrangulata (Pascher) H.Ettl & O.Ettl

Original publication and holotype designation: Ettl, H. & Ettl, O. (1959). Zur Kenntnis der Klasse Volvophyceae. II. Neue oder wenig bekannte Chlamydomonadalen. Archiv für Protistenkunde 104: 51-112, 4 pls.

Description: Unicellular thalli ellipsoidal to nearly cylindrical. Four anterior isokont flagella. Flagella inserted in anterior depression defined by two or four anterior lobes of the cell. Papilla are absent. Cell wall present. Stigma absent or present depending on the species. Chloroplast variable, depending on the species, and includes compact, flattened forms, cup-shaped forms, and highly-dissected forms. Two anterior contractile vacuoles. Asexual reproduction by zoosporogenesis typically producing four motile daughter cells. No other asexual stages have been observed. No sexual stages have been observed in this genus. Ettl transferred most members of the genus Pyramichlamys from the genus Carteria. Pyramichlamys has been collected from continental Europe and the United States. Habitats include small cold pools, acidic ponds, and saline bodies of water. The bulk of all species occur in the latter. No biochemical or molecular data are available for this organism

Information contributed by: M. Buchheim. The most recent alteration to this page was made on 2014-09-12 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Masjuk, N.P., Lilitska, G.G. & Kapustin, D.O. (2011). Chlamydomonadales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 157-218. Ruggell: A.R.A. Gantner Verlag K.-G..

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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

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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 12 September 2014. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 11 August 2022

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