Oonephris Fott, 1964

Holotype species: Oonephris obesa (West & G.S.West) Fott

Original publication and holotype designation: Fott, B. (1964). Oonephris, a new genus of coccoid green algae. Acta Universitatis Carolinae Biologica 134: 129-137.

Description: Cells solitary or in 2-4-8-(several)-celled colonies within the expanded mother cell wall, often with remnants of mother cell walls of previous generations. Cells ellipsoid, oval, or slightly reniform, 11-58 x 7-48 &m. Cell wall thick, sometimes stratified, smooth, with or without polar thickenings. Chloroplast of young cells stellate, with a central pyrenoid, later becoming reticulate and sometimes with more than one pyrenoid. Asexual reproduction by formation of 2-4-8-(16) autospores which may be temporarily retained within the mother cell walls. Sexual reproduction and flagellated stages unknown. Oonephris, benthic, periphytic, probably cosmopolitan.

Information contributed by: G. Dillard. The most recent alteration to this page was made on 2011-12-20 by M.D. 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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=43442

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 20 December 2011. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 17 December 2024