180,830 species and infraspecific names are in the database, 23,905 images, 74,600 bibliographic items, 598,161 distributional records.

Ulnaria (Kützing) Compère, 2001

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Heterokontophyta
Subphylum Bacillariophytina
Class Bacillariophyceae
Subclass Fragilariophycidae
Order Licmophorales
Family Ulnariaceae

Holotype species: Synedra ulna (Nitzsch) Ehrenberg

Currently accepted name for the type species: Ulnaria ulna (Nitzsch) Compère

Original publication:Compère, P. (2001). Ulnaria (Kützing) Compère, a new genus name for Fragilaria subgen. Alterasynedra Lange-Bertalot with comments on the typification of Synedra Ehrenberg. In: Lange-Bertalot Festschrift. Studies on diatoms dedicated to Prof. Dr. Dr. h.c. Horst Lange-Bertalot on the occasion of his 65th birthday. (Jahn, R., Kociolek, J.P., Witkowski, A. & Compère, P. Eds), pp. 97-101. Ruggell: A.R.G. Gantner Verlag K.G.
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Type designated in Frenguelli, G. (Frenguelli, J.) (1929). Diatomee fossili delle conche saline del deserto cileno-boliviano. Bolettino della Società Geologica Italiana, Roma 47(2): 185-236, 5 pls [10-14].

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Liu, B., Williams, D.M. & Tan, L. (2017). Three new species of Ulnaria (Bacillariophyta) from the Wuling Mountains Area, China. Phytotaxa 306(4): 241-258, 71 fig.

Nomenclatural notes
From Compère (2001: 100): "Ulnaria (Kützing) Compere, comb. et stat. nov. Basionym: Synedra [unranked] Ulnaria Klitzing, Die kieselschaligen Bacillarien oder Diatomeen, p. 65 (1844). Synonym: Synedra subgen. Ulnaria (Klitzing) Frenguelli, Bollettino della Societa Geologica Italiana 47, p. 234 (1929). Type: Synedra ulna (Nitzsch) Ehrenberg (designated by Frenguelli). Illegitimate synonym: Fragilaria subgen. Alterasynedra Lange-Bertalot, Bibliotheca Diatomologica 27, p. 52 (1993)." - (20 Aug 2022) - M.D. Guiry

Taxonomic notes
"Currently there are upwards of 30 species in the genus Ulnaria, with a number yet to be described (Williams pers. comm.) or still identified as species of Fragilaria Lyngbye (1819: 182) (Lange-Bertalot & Ulrich 2014 named some obvious species of Ulnaria as Fragilaria). Ulnaria is distributed worldwide but there are species and species groups that are restricted to just one area." (Liu, William & Tan 2017: 256). - (23 Nov 2017) - M.D. Guiry

Numbers of names and species: There are 70 species names in the database at present.

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
Ferrario, M.E., Cefarelli, A.O., Robison, B. & Verner, M. (2012). Thalassioneis signyensis (Bacillariophyceae) from northwest Weddell Sea icebergs, an emendation of the generic description. Journal of Phycology 48(1): 222-230.

Fourtanier, E. & Kociolek, J.P., (2003). Addendum to 'Catalogue of the Diatom Genera'. Diatom Research 18(2): 245-258.

Williams, D.M. & Blanco, S. (2020). Studies on type material from Kützing's diatom collection II: Synedra acus Kützing, Synedra arcus Kützing, their morphology, types and nomenclature. Diatom Research 34(4): 237-250.

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

Created: 02 November 2003 by M.D. Guiry

Verified by: 20 August 2022 by M.D. Guiry

Linking to this page: http://admin.algaebase.org/search/genus/detail/?genus_id=47116

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2025. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 22 June 2025.

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