159,014 species and infraspecific names are in the database, 22,477 images, 61,659 bibliographic items, 460,430 distributional records.

Olisthodiscus N.Carter, 1937

Holotype species: Olisthodiscus luteus N.Carter

Original publication and holotype designation: Carter, N. (1937). New or interesting algae from brackish water. Archiv für Protistenkunde 90: 1-68.

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as masculine.

Most recent taxonomic treatment adopted: Chrétiennot-Dinet, M.-J. (1990). Atlas du phytoplancton marin. Volume III: Chlorarachnophycées, Chlorophycées, Chrysophycées, Cryptophycées, Euglénophycées, Eustigmatophycées, Prasinophycées, Prymnesiophycées, Rhodophycées et Tribophycées Avec la collaboration de Chantal Billard et Alain Sournia. pp. [1]-261. Paris: Éditions du Centre National de la Recherche Scientifique 15, quai Anatole France - 75700 Paris.

Taxonomic notes
According to Grant et al. (2013: 62), the type species of Olisthodiscus, O. luteus Carter was found to be conspecific with Heterosigma akashiwo (Hada) Hada ex Hara & Chihara (Hara & Chihara 1987), as was O. carterae (Hallegraeff & Hara 2003). They also note that Yamaguchi et al. (2008) have suggested that Olisthodiscus may not belong in the Raphidiophyceae. - (4 Mar 2013) - Wendy Guiry

"Another thing I noticed in the list, you have Olisthodiscus luteus as a synonym of Heterosigma. That is what people believed from 1969 to 1983 when true Olistodiscus luteus was found in Japan (I think it was reported for the first time in the abstracts from the first phycological congress in Newfoundland). We also found it in Denmark and have both Heterosigma akashiwo and Olisthidiscus luteus in SCCAP. They are very different and actually belong to different classes but forget about that for moment, it has not been published yet! Just include Nellie Carter's nice species Olisthodiscus luteus in the Raphidophycae. It is a beautiful flat species (just as she described it) which swims along the bottom like a ray (without rotating), while Haterosigma akashiwo is a planktonic species which rotates all the time. It is barely flattened." Ø. Moestrup, e-mail 18 November 2013. - (19 Nov 2013) - M.D. Guiry

Numbers of names and species: There are 3 species names in the database at present, of which 1 has 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.

Grant, B., Waller, R.F., Clementson, L.A. & Wetherbee, R. (2013). Psammamonas australis gen. et sp. nov. (Raphidophyceae), a new dimorphic, sand-dwelling alga. Phycologia 52(1): 57-64.

Verification of data
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Created: 01 July 2004 by M.D. Guiry

Verified by: 24 September 2014 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44570

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 19 September 2020.

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