153,305 species and infraspecific names are in the database, 20,952 images, 59,280 bibliographic items, 409,170 distributional records.

Pinnularia didyma Ehrenberg

Publication details
Pinnularia didyma Ehrenberg 1844: 85

Published in: Ehrenberg, C.G. (1844). Mittheilung über 2 neue Lager von Gebirgsmassen aus Infusorien als Meeres-Absatz in Nord-Amerika und eine Vergleichung derselben mit den organischen Kreide-Gebilden in Europa und Afrik. Bericht über die zur Bekanntmachung Geeigneten Verhandlungen der Königl. Preuss. Akademie Der Wissenschaften zu Berlin 1844: 57-97.

Type species
The type species (holotype) of the genus Pinnularia is Pinnularia viridis (Nitzsch) Ehrenberg.

Status of name
This name is currently regarded as a synonym of Diploneis didyma (Ehrenberg) Ehrenberg

Basionym
Navicula didymus Ehrenberg

Type information
Type locality: Italy: Caltanisetta, Italy (fossil); Germany: Cuxhaven and Wismar (living) (Silva 1996-to date).

Origin of species name
Noun (Greek), twin.

Synonym(s)
No synonyms are currently included in AlgaeBase.

Taxonomic notes
P. didyma Ehrenberg 1844 [no location given] is cited in INA as "image". Pinnularia didymus ('didyma) (Ehrenberg) Ehrenberg 1843. Basionym: see Navicula didymus Ehrenberg 1840 [basionym not cited; with Latin description in Ber. Konigl. Akad. Wiss Berlin 1844: 85] (INA). - (12 Jan 2011) - Wendy Guiry

General environment
This is a marine/freshwater species.

Type information
no loc. given (Silva 1996-to date).

Detailed distribution with sources (Click to Load)

Source of current name
Ehrenberg, C.G. (1839). Über die Bildung der Kreidefelsen und des Kreidemergels durch unsichtbare Organismen. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin 1838: 59-147, pls I-IV, tables 1, 2.

Key references
Hendey, N.I. (1974). A revised check-list of the British marine diatoms. Journal of the Marine Biological Association of the United Kingdom 54: 277-300.

Silva, P.C. (1996-to date). Index Nominum Algarum, University Herbarium, University of California, Berkeley http://ucjeps.berkeley.edu/INA.html. Updated continuously. ..

Created: 26 April 2002 by M.D. Guiry

Verified by: 07 March 2018 by Wendy Guiry

Accesses: This record has been accessed by users 521 times since it was created.

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Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=46476

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 21 October 2018.

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