Sporotetras Butcher, 1932

Holotype species: Sporotetras pyriformis Butcher

Original publication and holotype designation: Butcher, R.W. (1932). Notes on new and little-known algae from the beds of rivers. New Phytologist 31: 289-309.

Description: Thalli forming plate-like to (hemi-)spherical colonies with 4 to 138 cells more or less evenly dispersed in flattened stage; when globular, cells at periphery; colony either hollow or filled with mucilage. Cells often arranged in tetrads. Cells 5-6 x 4-5 &m, irregularly rounded in surface view, in side view cells elongated to pyriform with narrow end facing center of colony. Cell uninucleate; chloroplasts single per cell and parietal, forming a lobed plate on outer side of cells; pyrenoid single. Asexual reproduction by autospores; 2-4 spores per sporangium. Flagellated stages and sexual reproduction unknown. Sporotetras benthic in rivers, attached by mucilage; known only from Europe. Genus poorly known and relationships unclear.

Information contributed by: D. Garbary & A. Comas. The most recent alteration to this page was made on 2012-07-10 by Michael Guiry.

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

Most recent taxonomic treatment adopted: John, D.M. & Tsarenko, P.M. (2002). Order Chlorococcales. In: The Freshwater Algal Flora of the British Isles. An identification guide to freshwater and terrestrial algae. (John, D.M., Whitton, B.A. & Brook, A.J. Eds), pp. 327-409. Cambridge: Cambridge University Press.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44279

Citing AlgaeBase
Cite this record as:
Michael Guiry in Guiry, M.D. & Guiry, G.M. 10 July 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 April 2024