153,615 species and infraspecific names are in the database, 20,981 images, 59,407 bibliographic items, 412,628 distributional records.

Dicellula Svirenko, 1926

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Chlorophyta infrakingdom
Phylum Chlorophyta
Subphylum Chlorophytina
Class Trebouxiophyceae
Order Chlorellales
Family Chlorellaceae

Holotype species: Dicellula planktonica Swirenko

Currently accepted name for the type species: Dicellula geminata (Printz) Korshikov

Taxonomic status: currently recognized as a distinct genus.

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..

Description: Thalli colonial, mostly forming 2-celled coenobia, but 4-celled coenobia or single cells are also described; surrounding mucilage envelope poorly developed. Cells in coenobium parallel, attached with their long sides. Cells oval to long oval, 8-22 x 5-12 µm, with many fine bristles 8-20 µm scattered on cell wall; brownish incrustations often present at base of bristles. Cells uninucleate; 1-2 (-8) chloroplasts each with one pyrenoid. Asexual reproduction by autospores; 4-8 per sporangium, organized into 2-celled coenobia. Autospores released by gelatinization of mother cell wall. Sexual reproduction and flagellated stages unknown. Dicellula planktonic in eutrophic freshwater; reported from Europe, Asia, Jamaica and USA. Genus usually assigned to Micractinaceae or Scenedesmaceae. Siderocystopsis, distinguished by occurrence of only solitary cells is a likely synonym.

Information contributed by: E. Hegewald. The most recent alteration to this page was made on 10 Jul 2012 by Michael Guiry.

Numbers of names and species: There are 4 species names in the database at present, of which 1 has been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

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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.

Created: 23 April 2002 by M.D. Guiry

Verified by: 10 July 2012 by Michael Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44250

Citing AlgaeBase
Please cite this record as:
Michael Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 19 November 2018.

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