159,446 species and infraspecific names are in the database, 22,547 images, 62,041 bibliographic items, 464,197 distributional records.

Tetracyclus emarginatus (Ehrenberg) W.Smith 1856

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Bacillariophyta
Subphylum Bacillariophytina
Class Bacillariophyceae
Subclass Fragilariophycidae
Order Tabellariales
Family Tabellariaceae
Genus Tetracyclus

Pictures

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Tetracyclus emarginatus (Ehrenberg) W.Smith
Two examples of a girdle view. Loch Thorn, Renfrewshire, Scotland. 24 Apr 2015. © C.F.Carter (chris.carter'at'6cvw.freeuk.com.

Tetracyclus emarginatus (Ehrenberg) W.Smith
Loch Thorn, Renfrewshire, Scotland. 24 Apr 2015. © C.F.Carter (chris.carter'at'6cvw.freeuk.com.

Tetracyclus emarginatus (Ehrenberg) W.Smith
Basic power 600x. 02 Apr 2013. Robert Lavigne. © Robert Lavigne (MicroscopyView.com).

Tetracyclus emarginatus (Ehrenberg) W.Smith
Basic power 600x __Dim. 24 x 40 µm. 27 Mar 2013. Robert Lavigne. © Robert Lavigne (MicroscopyView.com).

Tetracyclus emarginatus (Ehrenberg) W.Smith
Basic power 600x _Dim. 21 x 44 µm. 25 Mar 2013. Robert Lavigne. © Robert Lavigne (MicroscopyView.com).

Tetracyclus emarginatus (Ehrenberg) W.Smith
Basic power 600x _Dim. 25 x 43 µm. 25 Mar 2013. Robert Lavigne. © Robert Lavigne (MicroscopyView.com).

 

Laminaria saccharina var. bullata C.Agardh

Tetracyclus emarginatus (Ehrenberg) W.Smith Basic power 600x _Dim. 21 x 44 µm
© Robert Lavigne (MicroscopyView.com)

Publication details
Tetracyclus emarginatus (Ehrenberg) W.Smith 1856: 38

Published in: Smith, W. (1856). A synopsis of the British Diatomaceae; with remarks on their structure, functions and distribution; and instructions for collecting and preserving specimens. Vol. 2 pp. [i-vi] - xxix, 1-107, pls 32-60, 61-62, A-E. London: John van Voorst.
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Type species
The type species (holotype) of the genus Tetracyclus is Tetracyclus lacustris Ralfs.

Status of name
This name is of an entity that is currently accepted taxonomically.

Basionym
Biblarium emarginatum Ehrenberg

Type information
Type locality: Sibiria; Mexico (fossil) (Index Nominum Algarum).

Origin of species name
Adjective A (Latin), lacking a margin.

Homotypic Synonym(s)
Biblarium emarginatum Ehrenberg 1845
Tetracyclus lacustris var. emarginatus (Ehrenberg) van Heurck 1896

Heterotypic Synonym(s)
Tetracyclus major Héribaud 1908
Tetracyclus major var. acuminatus Héribaud 1908
Tetracyclus major var. integrilobus Héribaud 1908
Tetracyclus emarginatus f. abnormalis Fontell 1917

General environment
This is a freshwater species.

Detailed distribution with sources (Click to Load)

Key references
Kulikovskiy, M., Glushchenko, A.M., Kuznetsova, I.V. & Genkal, S.I. (2016). [Identification book of diatoms from Russia]. pp. [1]-804, 165 pls. Yaroslavl: Filigran. [in Russian]

Patrick, R.[M.] & Reimer, C.W. (1966). The diatoms of the United States exclusive of Alaska and Hawaii. Volume 1: Fragilariaceae, Eunotiaceae, Achnanthaceae, Naviculaceae. Monographs of the Academy of Natural Sciences of Philadelphia 13: 1-688.

Proschkina-Lavrenko, A.I. [Ed.] (1950). Diatomovyi Analiz, Kniga 3. Opredelitel' iskopaemykh i sovremennykh diatomik vodoroslei Poriadok Pennales. Vol. 3 (1). pp. [1]-398, 117 pls. Kiev: Botanicheskii Institut im V.L. Komarova Akademii Nauk S.S.S.R. Gosudarstvennoe Izdatelystvo Geologicheskoi Literatury. [in Russian]

Qi Yuzao & Li Jiaying & Qi Yuzao [ Qi, Y.Z. & Li, J.Y.] with Xie Shuqi & Zhang Zian [Xie,S.-Q. & Zhang, Z.] (2004). Flora algarum sinicarum aquae dulcis Tomus X Bacillariophyta Pennatae (Arpahidiales Raphidionales). pp. [1-8], i-xix, 1-161, plus pls I-XLI. Beijing: Science Press.

Sims, P.A. (ed.) (1996). An atlas of British diatoms arranged by B. Hartley based on illustrations by H.G. Barber and J.R. Carter. pp. [2], 1-601, incl. 290 pls. Bristol: Biopress Ltd.

Williams, D.M. (1987). Observations on the genus Tetracyclus Ralfs (Bacillariophyta) I. Valve and girdle structure of the extant species. British Phycological Journal 22: 383-399.

Created: 11 April 2002 by M.D. Guiry

Verified by: 27 May 2019 by M.D. Guiry

Accesses: This record has been accessed by users 545 times since it was created.

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Citing AlgaeBase
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 28 October 2020.

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