Luticola cohnii (Hilse) D.G.Mann 1990
Luticola cohnii (Hilse) D.G.Mann in Round & al. 1990: 670
Published in: 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.
Status of name
This name is of an entity that is currently accepted taxonomically.
Stauroneis cohnii Hilse
Type locality: Poland: near Strzelin (Index Nominum Algarum). Type: Hilse; iii.1860; (Index Nominum Algarum
Lyrella cohnii (Hilse) Lange-Bertalot
Stauroneis cohnii Hilse 1860
Navicula mutica var. cohnii (Hilse) Grunow 1880
Navicula mutica f. cohnii (Hilse) Cleve 1894
Navicula cohnii (Hilse) Lange-Bertalot 1985
Combination also introduced by Bukhtiyarova (1995: 421). - (30 Jan 2019) - M.D. Guiry
Living also in brackish water - (26 Dec 2011) - Salvador Valenzuela Miranda
This is a freshwater/terrestrial species.
Smaller valves broadly elliptical to linear-elliptical in larger valves, with convex margins and broadly rounded, non-protracted valve ends. Valve length 12-–20 µm, breadth 7.0–-7.5 µm. Axial area narrow, linear, slightly widening towards the central area The central area forms a rectangular to weakly wedge-shaped stauros bordered by one row of small, rounded areolae. One circular stigma is present, usually isolated but sometimes at the end of a short series of areolae. Raphe branches weakly curved with deflected central raphe endings and elongated terminal fissures, continuing onto the valve mantle. Transapical striae radiate in the middle to strongly radiate towards the apices, 20-–22 in 10 µm, composed of two to five small, rounded areolae. Areolae slightly transapically elongated near the valve margins.
Apart from a significantly higher number of striae in 10 µm (15-–20 vs 20–-22), based on the observed features, these valves clearly belong to Luticola cohnii. The species is often misidentified as Luticola mutica, which explains probably the much higher number of records of the latter in the (sub-)Antarctic region (Kellogg & Kellogg 2002). Both species can be separated by differences in the raphe structure (Lange-Bertalot & Bonik 1978). Luticola mutica has typical hooked and quite elongated central endings; whereas, L. cohnii only has short deflected ones. Other taxa such as Luticola muticoides (Hustedt) Mann differ sufficiently to avoid confusion.
Bukhtiyarova, L. N. (1995). Novye taksonomischeskie kombinatsii diatomovykh vodoroslei (Bacillariophyta). [New taxonomic combinations of diatoms (Bacillariophyta)]. Algologia 5(4): 417-424. [in Russian]
Eberle, M.E. (2008). Recent diatoms reported from the central United States: register of taxa and synonyms. Hays, Kansas: Department of Biological Sciences, Fort Hays State University. Latest electronic version: 5 December 2008.
Hofmann, G., Werum, M. & Lange-Bertalot, H. (2013). Diatomeen im Süßwasser—Benthos von Mitteleuropa. Bestimmungsflora Kieselalgen für die ökologische Praxis. Über 700 der häufigsten Arten und ihre Ökologie. pp. -908, 133 pls. Königstein: Koeltz Scientific Books.
John, J. (2020). Diatoms from arid Australia: taxonomy and biogeography. The diatom flora of Australia Volume 3. pp. -578, 341 figs. Schmitten – Oberreifenberg: Koeltz Botanical Books.
Lange-Bertalot, H., Hofmann, G., Werum, M. & Cantonati, M. (2017). Freshwater benthic diatoms of Central Europe: over 800 common species used in ecological assessments. English edition with updated taxonomy and added species (Cantonati, M. et al. eds). pp. -942, 135 pls. Schmitten-Oberreifenberg: Koeltz Botanical Books.
Levkov, Z., Metzeltin, D. & Pavlov, A. (2013). Luticola and Luticolopsis. In: Diatoms of Europe. Diatoms of the European inland waters and comparable habitats. Volume 7. (Lange-Bertalot, H. Eds), pp. 1-698. Königstein: Koeltz Scientific Books.
Li Jiaying & Qi Yuzao [Li, J.Y. & Qi, Y.Z.] (2018). Flora algarum sinicarum aquae dulcis Tomus XXIII Bacillariophyta Naviculaceae (III). pp. [1-8], i-xxiii, 1-214, pls I-XLVIII. Beijing: Science Press.
Reichardt, E. (2018). Die Diatomeen im Gebiet der Stadt Treuchtlingen. pp. -576 (Band 1); 579-1184 (Band 2), incl 451 pls. München: Bayerische Botanische Gesellschaft [Selbstverlag der Gesellschaft].
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. , 1-601, incl. 290 pls. Bristol: Biopress Ltd.
Sterken, M., Verleyen, E., Jones, V.J., Hodgson, D.A., Vyverman, W., Sabbe, K. & Van de Vjver, B. (2015). An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region). Plant Ecology and Evolution 148(3): 431-455.
Van de Vijver, B. & Mataloni, G. (2008). New and interesting species in the genus Luticola D.G. Mann (Bacillariophyta) from Deception Island (South Shetland Islands). Phycologia 47(5): 451-467, 104 figs, 1 table.
Created: 11 April 2002 by M.D. Guiry
Verified by: 30 April 2021 by M.D. Guiry
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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 24 June 2021.