Excentrosphaera G.T.Moore, 1901

Holotype species: Excentrosphaera viridis G.T.Moore

Original publication and holotype designation: Moore, G.T. (1901). New or little known unicellular algae. II. Eremosphaera viridis and Excentrosphaera. Botanical Gazette 32(5): 309-324.

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Description: Cells solitary, ellipsoid, subsphaerical or pyriform, 22-55 µm in diameter. Cell wall irregularly thickened and stratified in the thickened portions. Chloroplasts numerous, discoid to angular, parietal with -- in young cells -- one pyrenoid. Asexual reproduction by numerous small autospores liberated through an opening in the mother cell wall. Sexual reproduction and flagellated stages unknown. Excentrosphaera uncommon in freshwater, but known to be of wide-spread occurrence in Europe and North America

Information contributed by: G. Dillard.

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

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=47420

Citing AlgaeBase
Cite this record as:
Guiry, M.D. & Guiry, G.M. 15 October 2024. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 07 January 2025