Schizonema eximium Thwaites 1848
Publication Details
Schizonema eximium Thwaites 1848: 169, pl. 12: fig. F: 1-4
Published in: Thwaites, G.H.K. (1848). Further observations on the Diatomaceae with descriptions of new genera and species. Annals and Magazine of Natural History, Series 2 1: 161-172, pls XI, XII.
Request PDFType Species
A type species for this genus does not appear to have been designated.
Status of Name
This name is currently regarded as a synonym of Gyrosigma eximium (Thwaites) Boyer.
Source of Synonymy
Boyer, C.S. (1927). Synopsis of North American Diatomaceae, Supplement, Part 2. Naviculatae, Surirellatae. Proceedings of the Academy of Natural Sciences of Philadelphia 79: 229-583.
Type Information
Type locality: "Found in small quantity in a rapid stream of fresh water on the filaments of Vaucheria, roots of grass, &c, at Crew's Hole near Bristol, in December last."; (Thwaites 1848: 170) Type: G.H.K.T.; Dec. 1847; (INA 1996)
Origin of Species Name
Adjective (Latin), strikingly unusual.
General Environment
This is a freshwater species.
Created: 23 April 2002 by M.D. Guiry.
Last updated: 26 July 2018
Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.
Taxonomic note
Binomial also proposed by Kuntze 1898, Revisio Generum Plantarum, Pars III (3):552, with Basionym Caloneis eximia Grunow ex Cleve 1894 and Current Name Navicula eximia (Grunow) Grunow in A.W.F. Schmidt 1897. (See INA and CAS Diatom Collection). - (02 May 2023) - Salvador Valenzuela Miranda
Habitat note
Also living in freshwater - (04 September 2011) - Salvador Valenzuela Miranda
Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=39864
Citing AlgaeBase
Cite this record as:
G.M. Guiry in Guiry, M.D. & Guiry, G.M. 26 July 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 30 March 2025
