156,011 species and infraspecific names are in the database, 21,990 images, 60,295 bibliographic items, 442,406 distributional records.

Raphidocelis Hindák, 1977

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

Holotype species: Raphidocelis sigmoidea Hindák

Original publication and holotype designation: Hindák, F. (1977). Studies on the chlorococcal algae (Chlorophyceae). I. Biologicke Práce 23: 1-192.

Taxonomic status: currently recognized as a distinct genus.

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..

Taxonomic notes
"Further investigations for the genus Kirchneriella is needed due to the lack of molecular data." (Garcia et al. 2016: 14). - (30 Aug 2016) - M.D. Guiry

Description: Thalli unicellular or forming small colonies embedded in a highly irregular and structureless mucilage. Cells lunate to sigmoidal, pointed at both ends with evenly granulated cell walls. Cells lengths highly variable and species specific, in the type species 4-10 µm, in the other species 6-25 (-42) µm, mostly 1.5-3 µm wide. Cells uninucleate; chloroplast parietal and single, pyrenoids absent. Asexual reproduction by autospores, 2-4-8 per mother cell; released by cell wall rupture. Autospores and young cells often without granulations. Flagellated stages and sexual reproduction unknown.

Information contributed by: D. Garbary & F. Hindák. The most recent alteration to this page was made on 27 Jan 2012 by M.D. Guiry.

Comments: Raphidocelis species are planktonic in freshwater, and known only from central Europe. Taxonomic concepts in the monographs differ with overlapping concepts for Raphidocelis, Siderocelis, and Kirchneriella. The three species are distinguished based on cell size and cell shape.

Numbers of names and species: There are 18 species names in the database at present, as well as 4 infraspecific names. Of the species names, 14 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
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.

Fuciková, K., Lewis, P.O. & Lewis, L.A. (2014). Putting incertae sedis taxa in their place: a proposal for ten new families and three new genera in Sphaeropleales (Chlorophyceae, Chlorophyta). Journal of Phycology 50(1): 14-25.

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: 27 January 2012 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=43448

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 18 August 2019.

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