161,052 species and infraspecific names are in the database, 22,719 images, 62,643 bibliographic items, 473,224 distributional records.

Rhoicosigma Grunow, 1867

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Bacillariophyta
Subphylum Bacillariophytina
Class Bacillariophyceae
Subclass Bacillariophycidae
Order Naviculales
Suborder Naviculineae
Family Pleurosigmataceae

Lectotype species: Rhoicosigma reichardtianum Grunow

Original publication:Grunow, A. (1867). Diatomeen auf Sargassum von Honduras, gesammelt von Linding. Hedwigia 6(1-3): 1-8, 17-32, 33-37.
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Type designated in Farr, E.R., Leussink, J.A. & Stafleu, F.A. (1979). Index Nominum Genericorum (Plantarum). Vol. 100 pp. 1-1896. Utrecht: Bohn, Scheltema and Holkema.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Reid, G. (2012). A revision of the family Pleurosigmataceae (Bacillariophyta). pp. [1] 7-162 [163], 24 pls.. Ruggell: A.R.G. Gantner Verlag K.G..

Nomenclatural notes
G.Reid (2012: 99) says that two species were included in this genus by Grownow (1867: 19-20) and Ross (in ING) had selected T. reichardtianum as the type. However, the current on-line entry (March 2012) just has this latter as the type, not the lectotype. - (28 Mar 2012) - M.D. Guiry

Comments: Round, Crawford & Mann (1990: 128) record this family as being a member of the Suborder Naviculineae.

Numbers of names and species: There are 16 species names in the database at present, as well as 4 infraspecific names. Of the species names, 6 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
Round, F.E., Crawford, R.M. & Mann, D.G. (1990). The diatoms biology and morphology of the genera. pp. [i-ix], 1-747. Cambridge: Cambridge University Press.

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

Created: 23 April 2002 by M.D. Guiry

Verified by: 28 March 2012 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=44452

Citing AlgaeBase
Please cite this record as:
M.D. 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 19 April 2021.

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