Didymocystis Korshikov, 1953

Lectotype species: Didymocystis tuberculata Korshikov

Currently accepted name for the type species: Didymocystis inermis (Fott) Fott

Original publication: Korshikov, A.A. (1953). Viznachnik prisnovodnihk vodorostey Ukrainsykoi RSR. Pidklas Protokokovi (Protococcineae). Bakuol'ni (Vacuolales) ta Protokokovi (Protococcales) [The Freshwater Algae of the Ukrainian SSR. Sub-Class Protococcineae. Vacuolales and Protococcales]. Vol. 5 pp. 439, 421 figures. Kyiv: Akademyy Nauk Ukrayins'koy RSR. [in Ukrainian]

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Type designated in: Fott, B. (1973). Das Phytoplankton des Süsswassers. 6. Teil. Chlorophyceae (Grünalgen), Ordnung: Tetrasporales. British Phycological Journal 8: 203.

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Description: Thalli colonial, forming 2-celled coenobia embedded in mucilaginous matrix. Cells ovate, 5.4-13 x 2.4-6 µm. Cell wall with cellulosic fibers, sometimes covered by granules. Cells uninucleate; chloroplast single and parietal withot pyrenoid. Asexual reproduction by autospores; 2-4 per sporangium but organized in 1-2 coenobia; spore release by partial dissolution of parental cell wall. Sexual reproduction and flagellated stages unknown. Didymocystis planktonic in freshwater ponds and lakes; reported from Europe (widely distributed), United States and Asia. Genus not included in Scenedesmaceae because of presence of cellulosic cell wall and absence of pyrenoids.

Information contributed by: E. Hegewald. 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: 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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=43470

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 27 April 2024