DiatomBase
DiatomBase name details
Actinocyclus ralfsii (W.Smith) Ralfs, 1861
162781 (urn:lsid:marinespecies.org:taxname:162781)
unaccepted (synonym)
Species
- Forma Actinocyclus ralfsii f. major Grunow in Van Heurck, 1883
- Forma Actinocyclus ralfsii f. minor Grunow in Van Heurck, 1883
- Forma Actinocyclus ralfsii f. australiensis Grunow in Van Heurck, 1890 (uncertain > unassessed)
- Forma Actinocyclus ralfsii f. inermis M. Peragallo in Peragallo & Peragallo, 1911 (uncertain > unassessed)
- Forma Actinocyclus ralfsii f. minor Palibin, 1936 (uncertain > unassessed)
- Forma Actinocyclus ralfsii f. minutae Peragallo & Peragallo, 1902 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. arizonae Blake, 1902 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. baltica (Rattray) M. Peragallo, 1897 accepted as Actinocyclus moniliformis var. baltica Rattray, 1890 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. challengerensis Castracane, 1886 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. indivisa Grunow in Weissflog Collection, 1890 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. knemeides (Pantocsek) M. Peragallo, 1897 accepted as Actinocyclus knemeides Pantocsek, 1886 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. monicae Grunow in Van Heurck, 1883 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. moniliformis Kitton ms. in Rattray, 1890 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. partitus Grunow in Van Heurck, 1883 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. ralfsii (W. Smith) Ralfs in Pritchard, 1861 accepted as Eupodiscus ralfsii var. ralfsii W. Smith, 1856 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. samoensis Grunow in Van Heurck, 1883 (uncertain, synonym)
- Variety Actinocyclus ralfsii var. sparsus (Gregory) Ralfs, 1861 accepted as Eupodiscus sparsus Gregory, 1857 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. yarrensis Mills, 1933 (uncertain > unassessed)
- Variety Actinocyclus ralfsii var. yarrensis Grunow in Cleve & Möller, 1878 (uncertain > unassessed)
- Forma Actinocyclus ralfsii f. major Van Heurck, 1883 accepted as Actinocyclus ralfsii f. major Grunow in Van Heurck, 1883 (authority: Grunow in Van Heurck, 1883)
- Variety Actinocyclus ralfsii var. samoensis Grunow accepted as Actinocyclus ralfsii var. samoensis Grunow in Van Heurck, 1883 (authority: Grunow in Van Heurck, 1883)
- Variety Actinocyclus ralfsii var. sparsa (Gregory) Ralfs in Pritchard, 1861 accepted as Actinocyclus octonarius var. sparsus (Gregory) Hendey, 1954 accepted as Eupodiscus sparsus Gregory, 1857 (synonym)
marine
Not documented
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. Actinocyclus ralfsii (W.Smith) Ralfs, 1861. Accessed at: https://www.diatombase.org/aphia.php?p=taxdetails&id=162781 on 2026-07-02
Date
action
by
basis of record
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 
[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 Meunier, A. (1915). Microplankton de la Mer Flamande: 2. Les Diatomacées (suite) (Le Genre Chaetoceros excepté). Mémoires du Musée Royal d'Histoire Naturelle de Belgique = Verhandelingen van het Koninklijk Natuurhistorisch Museum van België, VII(3). Hayez, imprimeur de l'Académie royale de Belgique: Bruxelles. 182 pp. [details]
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 [request]
source of synonymy 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 [request]
[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 Meunier, A. (1915). Microplankton de la Mer Flamande: 2. Les Diatomacées (suite) (Le Genre Chaetoceros excepté). Mémoires du Musée Royal d'Histoire Naturelle de Belgique = Verhandelingen van het Koninklijk Natuurhistorisch Museum van België, VII(3). Hayez, imprimeur de l'Académie royale de Belgique: Bruxelles. 182 pp. [details]
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
[request]source of synonymy 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
[request]Unreviewed
