Arthrospira Sitzenberger ex Gomont, 1892: 246
Lectotype species: Arthrospira jenneri Stizenberger ex Gomont
Original publication:Gomont, M. (1892 '1893'). Monographie des Oscillariées (Nostocacées homocystées). Annales des Sciences Naturelles, Botanique, Série 7 16: 91-264, pls 1-7.
Type designated inGardner, N.L. (1932). The Myxophyceae of Porto Rico and the Virgin Islands. In: Scientific Survey of Porto Rico and the Virgin Islands. (Anon. Eds) Vol. 8, pp. 249-311. New York: New York Academy of Sciences.
Taxonomic status: currently recognized as a distinct genus.
Description: Filaments unbranched, solitary and free-living (floating), or in mats which are microscopic or macroscopic, covering the substrate, more or less regularly screw-like and freely coiled along the whole length, with unchanged or continually changing (decreasing or increasing) width of screws; trichomes:spirals width ratio = (2.5)-5-(10). Sheaths usually missing, rarely facultatively developed, colorless, tube-like, joined to trichomes, opened at the ends, containing a single trichome. Trichomes isopolar, 3-10 _m wide, uniseriate, composed of cylindrical cells, constricted or not at the visible crosswalls, not attenuated or slightly attenuated towards the ends, motile (rotation). Cells without aerotopes or (in planktonic species) with aerotopes, more or less isodiametric or shorter than wide, sometimes granular and with condensed granules at the crosswalls; end cells widely rounded and usually with thickened outer cell walls or with calyptras (in developed trichomes); special perforation of cell walls (crosswalls and side walls; see in Guglielmi and Cohen-Bazire (1982); all species ?). Cell content pale or bright blue-green or olive-green; thylakoids situated perpendicularly and irregularly along the cell walls. No heterocytes or akinetes. Cell division cross-wise, perpendicular to the long axis of a trichome, daughter cells grow more or less to the original size before the next division. All except apical cells capable of division. Reproduction by fragmentation of trichomes into motile hormogonia, which separate with assistance from necrotic cells. Several species are benthic in freshwater biotopes; several are planktonic, mainly in tropical and saline (mineral) lakes and reservoirs. Important biotechnological organisms for mass culture (usually under the incorrect name Spirulina platensis). Few species are known from marine littoral biotopes.
NCBI Nucleotide Sequences
Numbers of names and species: There are 56 species (and infraspecific) names in the database at present, of which 13 have been flagged as currently accepted taxonomically.
Names: ('C' indicates a name that is currently 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):
Arthrospira amethystina (Buell) De Toni C
Arthrospira ardissonei (Cohn) Forti C
Arthrospira argentina (Frenguelli) Guarrera & Kühnemann C
Arthrospira balkrishnanii N.D.Kamat C
Arthrospira baryana Stizenberger P
Arthrospira boryana Stizenberger P
Arthrospira braunii (Kützing) Crow P
Arthrospira breviarticulata Setchell & N.L.Gardner S
Arthrospira brevis Wang C
Arthrospira brevis (Kützing) Drouet S
Arthrospira curta Lemmermann S
Arthrospira desikacharyiensis Vasishta P
Arthrospira funiformis Vouk S
Arthrospira fusiformis (Voronikhin) J.Komárek & J.W.G.Lund C
Arthrospira ghannae Drouet & Strickland C
Arthrospira gigantea (Schmidle) Anagnostidis C
Arthrospira gomontiana Setchell S
Arthrospira indica Desikachary & N.Jeeji Bai C
Arthrospira jenneri var. platensis (Nordstedt) Guarrera & Kühnemann P
Arthrospira jenneri Stizenberger ex Gomont C - type
Arthrospira jenneri f. purpurea Collins P
Arthrospira joshii Vasishta P
Arthrospira khannae Drouet & Strickland C
Arthrospira laxa (G.M.Smith) Crow P
Arthrospira laxissima Setchell P
Arthrospira laxissima Gomont P
Arthrospira leopoliensis Raciborski S
Arthrospira major (Kützing ex Gomont) W.B.Crow S
Arthrospira margaritae Gomont S
Arthrospira massartii H.Kufferath S
Arthrospira massartii var. indica Desikachary C
Arthrospira maxima Setchell & N.L.Gardner C
Arthrospira meneghiniana (Zanardini) Crow P
Arthrospira miniata f. acutissima I.Umezaki S
Arthrospira miniata var. constricta L.Hoffmann C
Arthrospira miniata Gomont C
Arthrospira neapolitana (Kützing ex Gomont) F.E.Drouet S
Arthrospira nordstedtii (Gomont) Crow P
Arthrospira oceanica (P.L.Crouan & H.M.Crouan) Crow P
Arthrospira okensis Meyer S
Arthrospira pellucida Chu Chia Wang P
Arthrospira platensis var. tenuis (C.B.Rao) Desikachary S
Arthrospira platensis Gomont C
Arthrospira platensis var. non-constricta (Banerji) Desikachary S
Arthrospira platensis f. granulata Desikachary C
Arthrospira platensis f. minor Rich P
Arthrospira santannae Komárek & Komárková-Legnerová C
Arthrospira setchellii De Toni P
Arthrospira skujae A.G.E.Magrin, P.A.C.Senna & J.Komárek C
Arthrospira spirulinoides Ghose S
Arthrospira spirulinoides f. tenuis (R.N.Singh) Desikachary S
Arthrospira subsalsa (Oersted) Crow P
Arthrospira subtilissima (Kützing) Crow P
Arthrospira tenuis Brühl & Biswas S
Arthrospira tenuissima (Kützing) Crow P
Arthrospira versicolor (Cohn) Crow P
Whitton, B.A. (2002). Phylum Cyanophyta (Cyanobacteria). In: The Freshwater Algal Flora of the British Isles. An identification guide to freshwater and terrestrial algae. (John, D.M., Whitton, B.A. & Brook, A.J. Eds), pp. 25-122. Cambridge: Cambridge University Press.
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: http://www.algaebase.org/search/genus/detail/?genus_id=43076
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2014. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 09 March 2014.
Algaebase taxon LSID: urn:lsid:algaebase.org:taxname:8550