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Phormidium retzii Kützing ex Gomont

Empire Prokaryota
Kingdom Eubacteria
Subkingdom Negibacteria
Phylum Cyanobacteria
Class Cyanophyceae
Subclass Oscillatoriophycidae
Order Oscillatoriales
Family Oscillatoriaceae
Genus Phormidium


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Phormidium retzii Kützing ex Gomont
Panama. In situ: mucilaginous undulating tufts, epiphytic as shown here or on hard substrata. D.S. Littler. © Diane Littler (littlerd@si.edu).

Phormidium retzii Kützing ex Gomont
Panama. Trichomes straight or curved, tangled; sheaths thin, delicate soon diffusing into amorphous mass. D.S. Littler. © Diane Littler (littlerd@si.edu).

Phormidium retzii Kützing ex Gomont
Panama. Cell joints constricted in younger filaments, difficult to observe in older filaments. D.S. Littler. © Diane Littler (littlerd@si.edu).

Phormidium retzii Kützing ex Gomont
Panama. Terminal cells rounded; cell joints often constricted in younger filaments. D.S. Littler. © Diane Littler (littlerd@si.edu).


Iridophycus splendens Setchell & N.L.Gardner

Phormidium retzii Kützing ex Gomont Panama. In situ: mucilaginous undulating tufts, epiphytic as shown here or on hard substrata
© Diane Littler (littlerd@si.edu)

Publication details
Phormidium retzii Kützing ex Gomont 1892: 175, pl. V [5]: figs 6-9 (as 'Retzii' )

Published in: Gomont, M. (1892 '1893'). Monographie des Oscillariées (Nostocacées Homocystées). Deuxième partie. - Lyngbyées. Annales des Sciences Naturelles, Botanique, Série 7 16: 91-264, pls 1-7.
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Type species
The type species (lectotype) of the genus Phormidium is Phormidium lucidum Kützing ex Gomont.

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

Heterotypic Synonym(s)
Oscillatoria retzii C.Agardh 1812
Conferva retzii (C.Agardh) Sommerfelt 1826
Microcoleus retzii (C.Agardh) Rabenhorst 1847
Lyngbya retzii Hansgirg 1892

General environment
This is a freshwater species.

Detailed distribution with sources
(as Oscillatoria retzii C.Agardh)
Europe: France (Anon. 2017), Italy (Furnari et al. 2003).

North America: Arkansas (AR) (Smith 2010).

Australia and New Zealand: Queensland (Day et al. 1995, Phillips 2002).

(as Conferva retzii (C.Agardh) Sommerfelt)
Europe: France (Anon. 2017).

(as Microcoleus retzii (C.Agardh) Rabenhorst)
Europe: France (Anon. 2017).

(as Phormidium retzii Kützing ex Gomont)
Europe: Britain (Whitton et al. 2003, John, Whitton & Brook 2011), Czech Republic (Gadea et al. 2013, Gadea et al. 2013), France (Anon. 2017), Georgia (Barinova et al. 2011), Germany (Mauch & Schmedtje 2003, Täuscher 2011, Täuscher 2014, Täuscher 2015, Täuscher 2016), Greece (Gkelis et al. 2016), Lithuania (Vitonyte & Kostkeviciene 2008), Netherlands (Veen et al. 2015), Romania (Caraus 2002, Caraus 2012, Caraus 2017), Russia (Europe) (Gaysina et al. 2018 , Patova & Novakovskaya 2018), Scandinavia (Karlason et al. 2018), Slovakia (Hindák & Hindáková 2016), Spain (Aboal 1996), Turkey (Europe) (Aysel 2005).

North America: Arkansas (AR) (Smith 2010), Great Lakes (Prescott 1962), Northwest Territories (Sheath & Steinman 1982), Québec (Poulin, Hamilton & Proulx 1995), Tennessee (TN) (Johansen et al. 2007).

South America: Argentina (Tell 1985, Rodriguez et al. 2006).

Africa: Ghana (Smith, Smith & Nii Yemoh Annang 2015).

South-west Asia: Bangladesh (Siddiqui et al. 2009), India (Gupta 2012), Iran (Afsharzadeh et al. 2003), Iraq (Maulood et al. 2013), Israel (Vinogradova et al. 2000).

Asia: Japan (Hirose, Yamagishi & Akiyama 1977), Nepal (Rai, Rai & Jha 2010), Russia (Far East) (Medvedeva & Nikulina 2014), Tajikistan (Barinova, Boboev & Hisoriev 2015, Barinova & Niyatbekov 2018), Turkey (Asia) (Varol & Sen 2014).

South-east Asia: Myanmar (Burma) (Skuja 1949).

Australia and New Zealand: New Zealand (Chapman, Thompson & Segar 1957, Broady & Merican 2012), Queensland (Day et al. 1995, Bostock & Holland 2010), Western Australia (Day et al. 1995).

Pacific Islands: Hawaiian Islands (HI) (Sherwood 2004).

Antarctic and the subantarctic islands: Queen Maud Land (Hirano 1979).

(as Lyngbya retzii Hansgirg)
Europe: France (Anon. 2017), Spain (Alvarez-Cobelas & Gallardo 1988), Turkey (Europe) (Aysel 2005).

Australia and New Zealand: Queensland (Phillips 2002).

Key references
Geitler, L. (1932). Cyanophyceae. In: Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. Ed. 2. (Rabenhorst, L. Eds) Vol. 14, pp. 673-1196, i-[vi]. Leipzig: Akademische Verlagsgesellschaft.

Hirose, H., Yamagishi, T. & Akiyama, M. (1977). Illustrations of the Japanese fresh-water algae. pp. [8 col. pls], [1]-933, 244 pls in text. Tokyo: Uchida Rokakuho Publishing Co., Ltd. [in Japanese]

Komárek, J. & Anagnostidis, K. (2005). Süsswasserflora von Mitteleuropa. Cyanoprokaryota: 2. Teil/2nd Part: Oscillatoriales. Vol. 19 pp. 1-759. München: Elsevier Spektrum Akademischer Verlag.

Kützing, F.T. (1843). Phycologia generalis oder Anatomie, Physiologie und Systemkunde der Tange. Mit 80 farbig gedruckten Tafeln, gezeichnet und gravirt vom Verfasser. pp. [part 1]: [i]-xxxii, [1]-142, [part 2:] 143-458, 1, err.], pls 1-80. Leipzig: F.A. Brockhaus.

McGregor, G.B. (2007). Freshwater Cyanoprokaryota of North-Eastern Australia 1: Oscillatoriales. Flora of Australia Supplementary Series Number 24. pp. [i]-vi, [1]-123, 17 figs, 14 pls. Canberra: Australia Biological Resources Study.

Whitton, B.A. (2011). Cyanobacteria (Cyanophyta). In: The freshwater algal flora of the British Isles. An identification guide to freshwater and terrestrial algae. Second edition. (John, D.M., Whitton, B.A. & Brook, A.J. Eds), pp. 31-158. Cambridge: Cambridge University Press.

Created: 11 April 2002 by M.D. Guiry

Verified by: 23 July 2018 by M.D. Guiry

Accesses: This record has been accessed by users 2385 times since it was created.

Verification of data
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(Please note: only references with the binomials in the title are included. The information is from the Literature database.)

Spearing, J.K. (1961). Vital staining of Phormidium retzii. British Phycological Bulletin 2: 103-104.

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Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 August 2019.

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