162,398 species and infraspecific names are in the database, 22,760 images, 63,992 bibliographic items, 474,947 distributional records.

Raphidiopsis F.E.Fritsch & F.Rich, 1929

Classification:
Empire Prokaryota
Kingdom Eubacteria
Subkingdom Negibacteria
Phylum Cyanobacteria
Class Cyanophyceae
Subclass Nostocophycidae
Order Nostocales
Family Aphanizomenonaceae

Holotype species: Raphidiopsis curvata Fritsch & M.F.Rich

Original publication and holotype designation: Fritsch, F.E. & Rich, F. (1929). Freshwater algae from Griqualand West. Transactions of the Royal Society of South Africa 18: 1-123.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Komárek, J., Kaštovský, J., Mares, J. & Johansen, J.R. (2014). Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach. Preslia 86: 295-335.

Nomenclatural notes
Date: 1930 (Aguilero et al., 2018). - (3 Apr 2018) - Wendy Guiry

Description: Filamentous; trichomes solitary, free floating, without sheaths or gelatinous envelopes, straight, waved or screw-like coiled, isopolar, uniseriate, usually slightly attenuated toward both ends (or to one end after trichome dissociation), but not elongated in cellular hair-like ends, constricted at crosswalls. Cells barrel-shaped, sometimes slightly elongated to the ends, facultatively with gas vesicles (aggregated in aerotopes); apical cells conical-rounded or pointed. Heterocytes missing. Akinetes develop in the middle of trichomes in series. Reproduction by dissociation of trichomes. Only planktonic, freshwater species, sometimes forming slight water blooms, several species occur only in geographically limited areas (tropical species, China, etc.). Emend. Aguilera, Berrendero Gómez, Kastovsky, Echenique & Salerno (2018: 144).

Information contributed by: J. Komárek. The most recent alteration to this page was made on 3 Apr 2018 by Wendy Guiry.

Numbers of names and species: There are 20 species names in the database at present, as well as 2 infraspecific names. Of the species names, 18 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
Aguilera, A., Berrendero Gómez, E., Kaštovský, J., Echenique, R.O. & Salerno, G.L. (2018). The polyphasic analysis of two native Raphidiopsis isolates supports the unification of the genera Raphidiopsis and Cylindrospermopsis (Nostocales, Cyanobacteria). Phycologia 57(2): 130-146.

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: 03 April 2018 by Wendy Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=43597

Citing AlgaeBase
Please cite this record as:
Wendy Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 27 July 2021.

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