Name: Plectonema Thuret ex Gomont 1892

Category: Genus

Proposed as: gen. nov.

Etymology: Gr. neut. n. nêma, a thread; N.L. neut. n. Plectonema

Gender: neuter (stem: Plectonemat-)

Type species: Plectonema tomasinianum Thuret ex Gomont 1892

Valid publication: Gomont M. Monographie des Oscillariées (Nostocacées Homocystées) deuxiéme partie -Lyngbyées. Annales des Sciences Naturelles, Botanique, Série 7 1892; 16:91-264.

Nomenclatural status: validly published under the ICN (Botanical Code)

Taxonomic status: correct name

• Notes:
  • Nomenclatural type of the family Plectonemataceae Elenkin 1949. Publication: Elenkin AA. Sinezelenye vodorosli SSSR. Spetsial’naya (sistematicheskaya) chast’. Vyp. 2. Izdatel'stvo Akademii Nauk USSR, Moskva & Leningrad, 1949.
  • Nomenclatural type of the subfamily Plectonematoideae Anagnostidis and Komárek 1988. Publication: Anagnostidis K, Komarek J. Modern approach to the classification system of cyanophytes - 3 - Oscillatoriales. Arch. Hydrobiol. Suppl. 1988; 80, 1-4:327-472.
  • Anagnostidis and Komarek (1988) assigned this genus to the subfamily Plectonematoideae Anagnostidis and Komárek 1988. Publication: Anagnostidis K, Komárek J. Modern approach to the classification system of cyanophytes. 3. Oscillatoriales. Archiv für Hydrobiologie, Supplement 1988; 80:327-472.
  • Elenkin (1949) assigned this genus to the family Plectonemataceae Elenkin 1949. Publication: Elenkin AA. Monographia algarum Cyanophycearum aquidulcium et terrestrium in finibus URSS inventarum, Pars specialis (Systematica), Fasc. II. III. Hormogoneae (Geitl.) Elenk. Sumptibus Academiae Scientarum URSS, Mosqua & Leningrad, 1949.
  • Geitler (1925) assigned this genus to the family Scytonemataceae corrig. Rabenhorst ex Bornet and Flahault 1886. Publication: Geitler L. Synoptische Darstellung der Cyanophyceen in morphologischer und systematischer Hinsicht. Beihefte zum Botanischen Centralblatt 1925; 41:163-294.
  • This taxon name is occasionally misprinted in some sources as: "Flectonema"; "Piectonema"; "Pkctonema"; "Plactonema"; "Plcctonema"; "Plecfonema"; "Plecioncma"; "Plecionema"; "Pleclonema"; "Pleclunema"; "Plecmnema"; "Plectanema"; "Plectcnema"; "Plectenema"; "Plectomema"; "Plectomena"; "Plectoncma"; "Plectonenia"; "Plectonerna"; "Plectonmna"; "Plectouema"; "Pleetonema"; "Pleotonema"; "Ptecfonema".
  • Pittman et al. (1991) suggested the abbreviation "PTNM" for this genus name but this does not appear to be of practical relevance any longer. Publication: Pittman KF, Walczak CA, Lock CM. Codes and abbreviations for approved of effectively published names of genera of bacteria published from January 1980 to December 1990. Int J Syst Bacteriol 1991; 41:571-579.

Subdivision:

Number of child taxa with a validly published and correct name: 1
Number of child taxa with a validly published name, including synonyms: 37
Total number of child taxa: 38

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Plectonema africanum Borge 1928	validly published under the ICN (Botanical Code)	synonym
    Plectonema andinum Schwabe 1960	validly published under the ICN (Botanical Code)	synonym
    Plectonema batrachosperma Starmach 1957	validly published under the ICN (Botanical Code)	synonym
    Plectonema battersii Gomont 1899	validly published under the ICN (Botanical Code)	synonym
    Plectonema boryanum Gomont 1899	validly published under the ICN (Botanical Code)	synonym
    Plectonema calothrichoides Gomont 1899	validly published under the ICN (Botanical Code)	synonym
    Plectonema capitatum Jaag 1935	validly published under the ICN (Botanical Code), illegitimate name	synonym
    Plectonema carneum Lemmermann 1907	validly published under the ICN (Botanical Code)	synonym
    Plectonema crispatum Playfair 1915	validly published under the ICN (Botanical Code)	synonym
    Plectonema dangeardii Frémy 1930	validly published under the ICN (Botanical Code)	synonym
    Plectonema diplosiphon Woronichin 1923	validly published under the ICN (Botanical Code)	synonym
    Plectonema endolithicum Ercegović 1932	validly published under the ICN (Botanical Code)	synonym
    Plectonema flexuosum Gardner 1927	validly published under the ICN (Botanical Code)	synonym
    Plectonema fortii Frémy 1930	validly published under the ICN (Botanical Code)	synonym
    Plectonema gloeophilum Borzì 1892	validly published under the ICN (Botanical Code)	synonym
    Plectonema golenkinianum Gomont 1899	validly published under the ICN (Botanical Code)	synonym
    Plectonema gracillimum Zopf ex Hansgirg 1892	validly published under the ICN (Botanical Code)	synonym
    Plectonema hansgirgii Schmidle 1900	validly published under the ICN (Botanical Code)	synonym
    Plectonema indica Dixit 1936	inaccurate spelling (ICN [Botanical Code])	misspelling
    Plectonema indicum corrig. Dixit 1936	validly published under the ICN (Botanical Code)	synonym
    Plectonema mucicola An 1992	validly published under the ICN (Botanical Code)	synonym
    Plectonema murale Gardner 1927	validly published under the ICN (Botanical Code)	synonym
    Plectonema norvegicum Gomont 1899	validly published under the ICN (Botanical Code)	synonym
    Plectonema nostocorum Bornet ex Gomont 1892	validly published under the ICN (Botanical Code)	synonym
    Plectonema notatum Schmidle 1901	validly published under the ICN (Botanical Code)	synonym
    Plectonema phormidioides Hansgirg ex Forti 1907	validly published under the ICN (Botanical Code)	synonym
    Plectonema polymorphum Schwabe 1960	validly published under the ICN (Botanical Code)	synonym
    Plectonema purpureum Gomont 1892	validly published under the ICN (Botanical Code)	synonym
    Plectonema radiosum Gomont 1892	validly published under the ICN (Botanical Code)	synonym
    Plectonema rhenanum Schmidle 1897	validly published under the ICN (Botanical Code)	synonym
    Plectonema schmidlei Limanowska 1912	validly published under the ICN (Botanical Code)	synonym
    Plectonema spongiosum Schwabe 1962	validly published under the ICN (Botanical Code)	synonym
    Plectonema tatricum Starmach 1963	validly published under the ICN (Botanical Code)	synonym
    Plectonema tenue Thuret ex Gomont 1892	validly published under the ICN (Botanical Code)	synonym
    Plectonema tenuissimum Gardner 1927	validly published under the ICN (Botanical Code)	synonym
    Plectonema terebrans Bornet and Flahault ex Gomont 1892	validly published under the ICN (Botanical Code)	synonym
    Plectonema tomasinianum Thuret ex Gomont 1892	validly published under the ICN (Botanical Code)	correct name
    Plectonema wollei Farlow ex Gomont 1892	validly published under the ICN (Botanical Code)	synonym

Parent taxon: Oscillatoriaceae Engler 1898

Assigned by: Komárek J, Kaštovský J, Mareš J, Johansen JR. Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach. Preslia 2014; 86:295-335.

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Record number: 6343