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Cocconeis placentula Ehrenberg, 1838

148990 (urn:lsid:marinespecies.org:taxname:148990)

  1. Biota
  2. Chromista (Kingdom)
  3. Heterokontophyta (Phylum)
  4. Bacillariophytina (Subphylum)
  5. Bacillariophyceae (Class)
  6. Bacillariophycidae (Subclass)
  7. Bacillariophycanae (Superorder)
  8. Achnanthales (Order)
  9. Cocconeidaceae (Family)
  10. Cocconeis (Genus)
  11. Cocconeis placentula (Species)
accepted
Species
Cocconeis C.G. Ehrenberg, 1837

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  1. Variety Cocconeis placentula var. klinoraphis Geitler, 1927
  2. Variety Cocconeis placentula var. placentula Ehrenberg, 1838
  3. Variety Cocconeis placentula var. rodriguensis C.Riaux-Gobin, O.E.Romero, P.Compère & A.Y.Al-Handal, 2011
  4. Forma Cocconeis placentula f. anormalis Østrup, 1910 (uncertain > unassessed)
  5. Forma Cocconeis placentula f. elata Cleve-Euler, 1934 (uncertain > unassessed)
  6. Forma Cocconeis placentula f. euglypta (Ehrenberg) Hustedt, 1957 accepted as Cocconeis euglypta Ehrenberg, 1854 (uncertain > unassessed)
  7. Forma Cocconeis placentula f. intermedia (Heribaud & Peragallo in Heribaud) Cleve, 1895 accepted as Cocconeis intermedia f. intermedia Héribaud & M. Peragallo in Héribaud, 1893 (uncertain > unassessed)
  8. Forma Cocconeis placentula f. klinoraphis Geitler, 1927 (uncertain > unassessed)
  9. Forma Cocconeis placentula f. lineata (Ehrenberg) Hustedt, 1957 accepted as Cocconeis lineata Ehrenberg, 1843 (uncertain > unassessed)
  10. Forma Cocconeis placentula f. major Cleve-Euler, 1953 (uncertain > unassessed)
  11. Forma Cocconeis placentula f. maximaornata Kaiser, 1918 (uncertain > unassessed)
  12. Forma Cocconeis placentula f. minor Brun & Héribaud in Héribaud, 1893 accepted as Cocconeis intermedia f. minor Peragallo & Héribaud in Héribaud, 1893 † accepted as Cocconeis intermedia Peragallo & Héribaud in Héribaud, 1893 emend C.E.Wetzel, G.G.Lai, Ector & Jüttner in Lai et al., 2020 (uncertain > unassessed)
  13. Forma Cocconeis placentula f. minor (Pantocsek) F.W. Mills, 1933 accepted as Cocconeis lineata var. minor Pantocsek, 1892 (uncertain > unassessed)
  14. Forma Cocconeis placentula f. minuta Cleve in A. Schmidt, 1894 (uncertain > unassessed)
  15. Forma Cocconeis placentula f. minutissima Mayer, 1913 (uncertain > unassessed)
  16. Forma Cocconeis placentula f. nipponica Skvortzow, 1936 (uncertain > unassessed)
  17. Forma Cocconeis placentula f. perpusilla Rabenhorst, 1864 (uncertain > unassessed)
  18. Forma Cocconeis placentula f. placentula Ehrenberg, 1838 (uncertain > unassessed)
  19. Forma Cocconeis placentula f. pumila Cleve-Euler, 1953 (uncertain > unassessed)
  20. Forma Cocconeis placentula f. rouxii (Héribaud & Brun in Héribaud) Cleve-Euler, 1953 accepted as Cocconeis rouxii var. rouxii Héribaud & Brun in Héribaud, 1893 (uncertain > unassessed)
  21. Forma Cocconeis placentula f. trilineata (M. Peragallo & Héribaud in Héribaud) Cleve-Euler, 1953 accepted as Cocconeis trilineatus M. Peragallo & Héribaud in Héribaud, 1893 (uncertain > unassessed)
  22. Variety Cocconeis placentula var. acuta Meister, 1934 (uncertain > unassessed)
  23. Variety Cocconeis placentula var. australica Playfair, 1914 (uncertain > unassessed)
  24. Variety Cocconeis placentula var. baicalensis Skvortzov & Meyer, 1928 (uncertain > unassessed)
  25. Variety Cocconeis placentula var. baikalensis Skvortzow, 1937 (uncertain > unassessed)
  26. Variety Cocconeis placentula var. baltica Juhlin-Dannfelt, 1882 (uncertain > unassessed)
  27. Variety Cocconeis placentula var. chiemensis Kaiser, 1926 (uncertain > unassessed)
  28. Variety Cocconeis placentula var. constricta Zanon, 1948 (uncertain > unassessed)
  29. Variety Cocconeis placentula var. costata Brun, 1880 (uncertain > unassessed)
  30. Variety Cocconeis placentula var. elata (Cleve-Euler) Cleve-Euler, 1953 accepted as Cocconeis placentula f. elata Cleve-Euler, 1934 (uncertain > unassessed)
  31. Variety Cocconeis placentula var. elliptica Hoppe, 1926 (uncertain > unassessed)
  32. Variety Cocconeis placentula var. euglypta (Ehrenberg) Grunow, 1884 accepted as Cocconeis euglypta Ehrenberg, 1854 (uncertain > unassessed)
  33. Variety Cocconeis placentula var. euglyptoides L.Geitler, 1958 (uncertain > unassessed)
  34. Variety Cocconeis placentula var. fossilis Pantocsek, 1902 (uncertain > unassessed)
  35. Variety Cocconeis placentula var. genuina Mayer, 1913 (uncertain > unassessed)
  36. Variety Cocconeis placentula var. gibba Kaiser, 1918 (uncertain > unassessed)
  37. Variety Cocconeis placentula var. gonzalezguerreroi Camara, 1950 (uncertain > unassessed)
  38. Variety Cocconeis placentula var. inclyta Schmidt in Schmidt et al., 1894 (uncertain > unassessed)
  39. Variety Cocconeis placentula var. limpida Schmidt in Schmidt et al., 1894 (uncertain > unassessed)
  40. Variety Cocconeis placentula var. lineata (Ehrenberg) van Heurck, 1885 accepted as Cocconeis lineata Ehrenberg, 1843 (uncertain > unassessed)
  41. Variety Cocconeis placentula var. lineolata Yakovlev, 1924 (uncertain > unassessed)
  42. Variety Cocconeis placentula var. meridionalis Brun in Schmidt et al., 1894 (uncertain > unassessed)
  43. Variety Cocconeis placentula var. minor H. Peragallo in Pelletan, 1889 (uncertain > unassessed)
  44. Variety Cocconeis placentula var. minor (Brun & Héribaud in Héribaud) Héribaud accepted as Cocconeis placentula f. minor Brun & Héribaud in Héribaud, 1893 accepted as Cocconeis intermedia f. minor Peragallo & Héribaud in Héribaud, 1893 † accepted as Cocconeis intermedia Peragallo & Héribaud in Héribaud, 1893 emend C.E.Wetzel, G.G.Lai, Ector & Jüttner in Lai et al., 2020 (uncertain > unassessed)
  45. Variety Cocconeis placentula var. oblonga Skvortzov, 2012 (uncertain)
  46. Variety Cocconeis placentula var. oceanica (Ehrenberg) Schumann, 1867 accepted as Cocconeis oceanica Ehrenberg, 1840 (uncertain > unassessed)
  47. Variety Cocconeis placentula var. placentula Rishaw, 1870 (uncertain > unassessed)
  48. Variety Cocconeis placentula var. placentula Rabenhorst, 1864 (uncertain > unassessed)
  49. Variety Cocconeis placentula var. placentula (M. Peragallo & Heribaud in Héribaud) Kolbe, 1927 accepted as Cocconeis trilineatus M. Peragallo & Héribaud in Héribaud, 1893 (uncertain > unassessed)
  50. Variety Cocconeis placentula var. pseudolineata Geitler, 1927 (uncertain > unassessed)
  51. Variety Cocconeis placentula var. punctata (Ehrenberg) Brun, 1880 accepted as Cocconeis punctata Ehrenberg, 1841 (uncertain > unassessed)
  52. Variety Cocconeis placentula var. punctata T.Morobuse (uncertain > unassessed)
  53. Variety Cocconeis placentula var. ranomafanensis E. Manguin, 1952 (uncertain > unassessed)
  54. Variety Cocconeis placentula var. rotunda Hajós, 1968 (uncertain > unassessed)
  55. Variety Cocconeis placentula var. rotunda Skvortzow, 1929 (uncertain > unassessed)
  56. Variety Cocconeis placentula var. rouxii (Héribaud-Joseph & Brun) Cleve, 1895 accepted as Cocconeis rouxii var. rouxii Héribaud & Brun in Héribaud, 1893 (uncertain > unassessed)
  57. Variety Cocconeis placentula var. siberica Skabichevskii, 1952 (uncertain > unassessed)
  58. Variety Cocconeis placentula var. skvortzowii (Skvortzow) Skabichevskii (uncertain > unassessed)
  59. Variety Cocconeis placentula var. tenustriata Geitler, 1932 (uncertain > unassessed)
  60. Variety Cocconeis placentula var. trilineata (M. Peragallo & Héribaud in Héribaud) Cleve, 1895 accepted as Cocconeis trilineatus M. Peragallo & Héribaud in Héribaud, 1893 (uncertain > unassessed)
  61. Variety Cocconeis placentula var. intermedia (Héribaud & M.Peragallo) Cleve, 1895 accepted as Cocconeis intermedia Peragallo & Héribaud in Héribaud, 1893 emend C.E.Wetzel, G.G.Lai, Ector & Jüttner in Lai et al., 2020 (Heterotypic synonym)
marine, brackish, fresh, terrestrial
Not documented
Distribution geographic region not obtained; recorded as being found in the Bay of Fundy  
Distribution geographic region not obtained; recorded as being found in the Bay of Fundy [details]
Kociolek, J.P.; Blanco, S.; Coste, M.; Ector, L.; Liu, Y.; Karthick, B.; Kulikovskiy, M.; Lundholm, N.; Ludwig, T.; Potapova, M.; Rimet, F.; Sabbe, K.; Sala, S.; Sar, E.; Taylor, J.; Van de Vijver, B.; Wetzel, C.E.; Williams, D.M.; Witkowski, A.; Witkowski, J. (2026). DiatomBase. Cocconeis placentula Ehrenberg, 1838. Accessed at: https://www.diatombase.org/aphia.php?p=taxdetails&id=148990 on 2026-08-04
Date
action
by
2005-03-30 08:52:46Z
created
db_admin
2005-07-07 12:50:42Z
changed
Espinel, Nadjejda

context source (HKRMS) Chin, T. G.; Cheng, Z. D.; Liu, S. C.; Lin, J. M. (1982). Fouling diatoms from Hong Kong waters. <em>In: Morton B, editor. Proceedings of the first international marine biological workshop: The marine flora and fauna of Hong Kong and southern China. Hong Kong University Press, Hong Kong.</em> 2: 761-765. [details] 

context source (RAS) ANTADATA, a database on biogeography of non marine algae in Continental Antarctica [details] 

context source (Schelde) Muylaert, K.; Sabbe, K. (1999). Spring phytoplankton assemblages in and around the maximum turbidity zone of the estuaries of the Elbe (Germany), the Schelde (Belgium/The Netherlands) and the Gironde (France). <i>J. Mar. Syst. 22</i>: 133-149 (look up in IMIS) [details] 

basis of record Muylaert, K.; Sabbe, K. (1999). Spring phytoplankton assemblages in and around the maximum turbidity zone of the estuaries of the Elbe (Germany), the Schelde (Belgium/The Netherlands) and the Gironde (France). <i>J. Mar. Syst. 22</i>: 133-149 (look up in IMIS) [details] 

additional source Rawlence, D.L. 1987. A guide to common phytoplankton of the St. Croix Estuary, New Brunswick. The New Brunswick Museum Publications in Natural Science No. 6. 60 p. [details] 

additional source Hällfors, G. (2004). Checklist of Baltic Sea Phytoplankton Species (including some heterotrophic protistan groups). <em>Baltic Sea Environment Proceedings.</em> No. 95: 210 pp., available online at http://helcom.fi/Lists/Publications/BSEP95.pdf [details] Available for editors  PDF available [request]

additional source Fourtanier, E. & Kociolek, J. P. (compilers). (2011). Catalogue of Diatom Names. California Academy of Sciences, On-line Version. Updated 2011-09-19., available online at http://researcharchive.calacademy.org/research/diatoms/names/index.asp [details] 

additional source Krayesky, D. M.; Meave, D. C.; Zamudio, E.; Norris, E.; Fredericq, S.; Tunnell, J. (2009). Diatoms (Bacillariophyta) of the Gulf of Mexico. <em>Gulf of Mexico origin, waters, and biota.</em> 1: 155-186. [details] Available for editors  PDF available [request]

additional source Hartley, B., Ross, R. & Williams, D.M. (1986). A check-list of the freshwater, brackish and marine diatoms of the British Isles and adjoining coastal waters. <em>Journal of the Marine Biological Association of the United Kingdom.</em> 66(3): 531-610., available online at https://doi.org/10.1017/s0025315400042235 [details] Available for editors  PDF available [request]

additional source Jahn, R., Kusber, W-H. & Romero, O.E. (2009). Cocconeis pediculus Ehrenberg and C. placentula Ehrenberg var. placentula (Bacillariophyta): typification and taxonomy. Fottea, 9(2): 275-288, available online at https://doi.org/10.5507/fot.2009.027 [details] Available for editors  PDF available [request]

additional source Leterme, S. C.; Ellis, A. V.; Mitchell, J. G.; Buscot, M.-J.; Pollet, T.; Schapira, M.; Seuront, L. (2010). Morphological flexibility of <em> Cocconeis placentula (Bacillariophyceae) </em> nanostructure to changing salinity levels. <em>Journal of Phycology.</em> 46(4): 715-719., available online at https://doi.org/10.1111/j.1529-8817.2010.00850.x [details] Available for editors  PDF available [request]

additional source Integrated Taxonomic Information System (ITIS). , available online at http://www.itis.gov [details] 
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Unreviewed
Diet phytosynthetic [details]

Distribution geographic region not obtained; recorded as being found in the Bay of Fundy [details]

Habitat pelagic or attached to various marine life [details]

Importance most abundant phylum of algae [details]

Morphology yellow brown in color, not green [details]

Predators marine microorganisms and animal larvae [details]

Reproduction general for group: both sexual and asexual [details]
To Barcode of Life 
To Biodiversity Heritage Library (229 publications) 
To European Nucleotide Archive, ENA (Cocconeis placentula) 
To PESI 
To ITIS
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Website and databases developed and hosted by VLIZ · Page generated 2026-08-10 · contact: Pat Kociolek