159,023 species and infraspecific names are in the database, 22,477 images, 61,668 bibliographic items, 462,201 distributional records.

Monoraphidium Komárková-Legnerová, 1969

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Chlorophyta infrakingdom
Phylum Chlorophyta
Subphylum Chlorophytina
Class Chlorophyceae
Order Sphaeropleales
Family Selenastraceae

Holotype species: Monoraphidium griffithii (Berkeley) Komárková-Legnerová

Original publication and holotype designation: Komárková-Legnerová, J. (1969). The systematics and ontogenesis of the genera Ankistrodesmus Corda and Monoraphidium gen. nov. In: Studies in Phycology. (Fott, B. Eds), pp. 75-144. Prague: Academia Publishing House of the Czechosolvak Academy of Sciences.

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as neuter.

Most recent taxonomic treatment adopted: Tsarenko, P.M. (2011). Sphaeropleales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 280-355. Ruggell: A.R.A. Gantner Verlag K.-G..

Description: Plant unicellular, not embedded in mucilage envelope. Cells 2-182 x 1-8 µm, straight to lunate to sigmoid or helically twisted, often with elongate ends. Cell walls smooth. Cells uninucleate; chloroplast single and parietal; pyrenoid absent or when present, compound and without stach envelope. Asexual reproduction by autospores, 2-16 per sporangium, produced in one or two parallel series; released by longitudinal or transverse rupture of parental wall. Flagellated stages and sexual reproduction unknown. Monoraphidium planktonic or attached in freshwater or in soil; reported from Europe, Asia, North America.

Information contributed by: D. Garbary & F. Hindák. The most recent alteration to this page was made on 11 Mar 2020 by M.D. Guiry.

Comments: Attached species without differentiation at poles. GC content of DNA determined for M. minutum at 71%. Among a group of tested algae, this species had an unusualy high level of methylation with 11.5% of the total nucleosides. Species distinguished based on cell size and shape. Genus segregated from Ankistrodesmus based on unicellular nature, and seriate development of autospores; distinguished from Keratococcus which has pyrenoids with starch envelope.

Numbers of names and species: There are 38 species names in the database at present, as well as 4 infraspecific names. Of the species names, 30 have 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):

Click here to also show infraspecific names in the list below.

References
Cambra Sánchez, J., Álvarez Cobelas, M. & Aboal Sanjurjo, M. (1998). Lista florística y bibliográfica de los clorófitos (Chlorophyta) de la Península Ibérica, Islas Baleares e Islas Canarias. pp. 1-614. Burgos: Asociación Española de Limnología.

Krienitz, L., Bock, C., Nozaki, H. & Wolf, M. (2011). SSU rRNA gene phylogeny of morphospecies affiliated to the bioassay alga "Selenastrum capricornutum" recoverd the polyphyletic origin of crescent-shaped Chlorophyta. Journal of Phycology 47(4): 880-893.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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: 11 April 2002 by M.D. Guiry

Verified by: 11 March 2020 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=43438

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 21 September 2020.

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