Franceia Lemmermann, 1898

Holotype species: Franceia ovalis (Francé) Lemmermann

Original publication and holotype designation: Lemmermann, E. (1898). Beiträge zur Kenntnis der Planktonalgen. 1. Hedwigia 37: 303-312.

Description: Cells solitary within a thin, often indistinct mucilaginous envelope, rarely in temporary groups of 2-4 within an expanded mother cell wall. Cells oval or ellipsoid, 2-19 x 3.5-15 µm, with several (6 up to >30) spines of variable length (up to 75 µm) distributed over the entire cell surface. Chloroplast -- one in young cells, several in older cells -- parietal, with one, often indistinct pyrenoid. Asexual reproduction by 2-4-8 autospores which are often temporarily retained within the markedly expanded mother cell wall. Sexual reproduction and flagellated stages unknown. Species of Franceia are of widespread occurrence in the freshwater plankton.

Information contributed by: G. Dillard. The most recent alteration to this page was made on 2012-07-09 by Michael Guiry.

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

Most recent taxonomic treatment adopted: Tsarenko, P.M. (2011). Trebouxiophyceae. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 61-108. 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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=43433

Citing AlgaeBase
Cite this record as:
Michael Guiry in Guiry, M.D. & Guiry, G.M. 09 July 2012. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 November 2024