Name: Hydrococcaceae Kützing 1843

Category: Family

Proposed as: fam. nov.

Etymology: Hy.dro.coc.ca’ce.ae. N.L. fem. pl. n. Hydrococcaceae, the Hydrococcus family

Pronunciation (Latin), gender: hy-dro-kok-KA-ke-a͡e, feminine

Type genus: Hydrococcus Kützing 1833

Valid publication: Kützing FT. Phycologia generalis oder Anatomie, Physiologie und Systemkunde der Tange. Mit 80 farbig gedruckten Tafeln, gezeichnet und gravirt vom Verfasser. F.A. Brockhaus, Leipzig, 1843.

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

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    Xenococcaceae Ercegović 1932	heterotypic synonym, validly published under the ICN (Botanical Code)
    Podocapsaceae Ercegović 1932	heterotypic synonym, validly published under the ICN (Botanical Code), illegitimate name
    Pleurocapsaceae Geitler 1925	heterotypic synonym, validly published under the ICN (Botanical Code), illegitimate name
    "Endonemataceen" Pascher 1929	heterotypic synonym, inaccurate spelling
    Chroococcidiaceae Geitler 1933	heterotypic synonym, validly published under the ICN (Botanical Code)
    Hyellaceae Borzì 1914	heterotypic synonym, validly published under the ICN (Botanical Code)
    Endonemataceae Pascher ex Elenkin 1935	heterotypic synonym, validly published under the ICN (Botanical Code), illegitimate name
    Scopulonemataceae Ercegović 1932	heterotypic synonym, validly published under the ICN (Botanical Code)
    Dermocarpellaceae Ginsburg-Ardré ex Christensen 1978	heterotypic synonym, validly published under the ICN (Botanical Code)
    Endonemataceae Pascher ex Schmidt 1937	heterotypic synonym, validly published under the ICN (Botanical Code), illegitimate name
    "Exococcaceae" Stizenberger 1860	heterotypic synonym, not validly published

• Notes:
  • 🧕 Komarek et al. (2014) assigned this family to the order Pleurocapsales Geitler 1925. Publication: Komárek J, Kaštovský J, Mareš J, Johansen JR. Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach. Preslia 2014; 86:295-335. 🇨🇿
  • 🧒 Beljakova (2000) assigned the subfamily "Solentioideae" to this family. Publication: Beljakova RN. [Sinopsis of the benthic Cyanophyta flora of the Russian Far-Eastern seas. 2. Chroococcales (Entophysalidaceae, Dermocarpellaceae, Xenococcaceae, Hydrococcaceae)]. Bot. Zhurn. 2000; 85:87-98. 🇷🇺
  • 🧒 Hoffmann et al. (2005) assigned the genus "Pascherinema" to this family. Publication: Hoffmann L, Komárek J, Kastovsky J. System of cyanoprokaryotes (cyanobacteria) - state in 2004. Algological Studies 2005; 117:95-115. 🇱🇺
  • 🧒 Komarek and Anagnostidis (1986) assigned the genus Pilgeria Schmidle 1901 to this family. Publication: Komárek J, Anagnostidis K. Modern approach to the classification system of cyanophytes, 2 - Chroococcales. Algological Studies/Archiv für Hydrobiologie 1986; 43:157-226.
  • 🧒 Komarek and Golubic (1990) assigned the subfamily "Hydrococcoideae" to this family. — 🧒 Komarek and Golubic (1990) assigned the subfamily "Pascherinematoideae" to this family. — 🧒 Komarek and Golubic (1990) assigned the subfamily "Podocapsoideae" to this family. Publication: Komárek J, Golubić S. Guide to the Nomenclature and formal taxonomic treatment of oxyphototroph prokaryotes (Cyanoprokaryotes). Published by the Authors, Třeboň and Boston, 1990.
  • 🚃 The type genus of this family has alternatively been placed in the family Pleurocapsaceae Geitler 1925. Publication: Strunecky O, Ivanova AP, Mares J. An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis. J Phycol 2023; 59:12-51. 🇨🇿
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Hydrococeaceae"; "Ilydrococcaceae".
  • 🎰 The BRCs most frequently used for deposits in this group are: UC: 15; FCME: 7; LEGE: 3; TAU: 2; CCAP: 2; PCC: 2; TAU-MAC: 2; CBFS: 1; BRNM: 1; TNS: 1.
  • 🧍 Silva (1980) notes that as circumscribed in the Index Nominum Genericorum, this family includes Exococcus, the type of Exococcaceae Stizenberger 1860; Hyella, the type of Hyellaceae Borzì 1914; Dermocarpa, the type of Dermocarpaceae Geitler 1925; Pleurocapsa, the type of Pleurocapsaceae Geitler 1925, a superfluous name initially applied to a family that included Hyella; Podocapsa Ercegović 1931, a later homonym and the type of the family name Podocapsaceae Ercegović 1932, which is not in accordance with the rules of the ICNafp; Scopulonema, the type of Scopulonemataceae Ercegović 1932; and Xenococcus, the type of Xenococcaceae Ercegović 1932. Hydrococcaceae in the Index Nominum Genericorum has essentially the same circumscription as Hyellaceae in Bourrelly (1970, p. 336), which was incorrectly named since it included Hydrococcus. According to Silva (1980), Geitler (1942, p. 85) was incorrect in applying the name Scopulonemataceae to a family that included Hydrococcus. Publication: Silva PC. Names of classes and families of living algae with special reference to their use in the Index Nominum Genericorum (Plantarum). Bohn, Scheltema & Holkema, Utrecht, 1980.

Subdivision:

Number of child taxa with a validly published and correct name: 38
Number of child taxa with a validly published name, including synonyms: 41
Total number of child taxa: 44

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Askenasya Möbius 1887	validly published under the ICN (Botanical Code)	correct name
    Brachynema Ercegović 1931	validly published under the ICN (Botanical Code)	correct name
    Chamaecalyx Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	correct name
    Chondrocystis Lemmermann 1899	validly published under the ICN (Botanical Code)	correct name
    Chroococcidium Geitler 1933	validly published under the ICN (Botanical Code)	correct name
    Chroococcopsis Geitler 1925	validly published under the ICN (Botanical Code)	correct name
    "Coleonema" Schousboe ex Bornet and Thuret 1880	not validly published	synonym
    "Coleonema" Duboscq and Grassé 1929	not validly published	synonym
    Cyanocystis Borzì 1882	validly published under the ICN (Botanical Code)	correct name
    Cyanoderma Weber-van Bosse 1887	validly published under the ICN (Botanical Code)	correct name
    Cyanosaccus Lukas and Golubić 1981	validly published under the ICN (Botanical Code)	correct name
    Dalmatella Ercegović 1929	validly published under the ICN (Botanical Code)	correct name
    Dermocarpella Lemmermann 1907	validly published under the ICN (Botanical Code)	correct name
    Endonema Pascher 1929	validly published under the ICN (Botanical Code)	correct name
    Eohyella Zhang and Golubić 1987	validly published under the ICN (Botanical Code)	correct name
    Epilithia Ercegović 1932	validly published under the ICN (Botanical Code)	correct name
    "Exococcus" Nägeli 1847	not validly published	preferred name
    Foliisarcina Alvarenga et al. 2016	validly published under the ICN (Botanical Code)	correct name
    Hormathonema Ercegović 1929	validly published under the ICN (Botanical Code)	correct name
    Hydrococcus Kützing 1833	validly published under the ICN (Botanical Code), conserved name	correct name
    Hydropodocapsa Molinari and Guiry 2021	validly published under the ICN (Botanical Code)	correct name
    Hyella Bornet and Flahault 1888	validly published under the ICN (Botanical Code)	correct name
    Ialomitzia Gruia 1969	validly published under the ICN (Botanical Code)	correct name
    Krkia Pevalek 1929	validly published under the ICN (Botanical Code)	synonym
    Myriasporella Oehler 1978	validly published under the ICN (Botanical Code)	correct name
    Myxohyella Geitler 1925	validly published under the ICN (Botanical Code)	correct name
    Myxosarcina Printz 1921	validly published under the ICN (Botanical Code)	correct name
    Nematoradaisia Geitler 1925	validly published under the ICN (Botanical Code)	correct name
    Odorella Shalygin et al. 2019	validly published under the ICN (Botanical Code)	correct name
    Oncobyrsa Agardh 1827	validly published under the ICN (Botanical Code)	correct name
    Onkonema Geitler 1933	validly published under the ICN (Botanical Code)	correct name
    Palaeopleurocapsa Knoll et al. 1975	validly published under the ICN (Botanical Code)	correct name
    Pleurocapsa Thuret 1885	validly published under the ICN (Botanical Code)	correct name
    Podocapsa Ercegović 1931	validly published under the ICN (Botanical Code), illegitimate name	synonym
    Radaisia Sauvageau 1895	validly published under the ICN (Botanical Code)	correct name
    Radaisiella Geitler 1925	validly published under the ICN (Botanical Code)	synonym
    Scissilisphaera Knoll and Calder 1983	validly published under the ICN (Botanical Code)	correct name
    Scopulonema Ercegović 1930	validly published under the ICN (Botanical Code)	correct name
    Sinaiella Gruia 1965	validly published under the ICN (Botanical Code)	correct name
    Solentia Ercegović 1927	validly published under the ICN (Botanical Code)	correct name
    Stanieria Komárek and Anagnostidis 1986	validly published under the ICN (Botanical Code)	correct name
    Tryponema Ercegović 1929	validly published under the ICN (Botanical Code)	correct name
    Xenococcus Thuret 1880	validly published under the ICN (Botanical Code)	correct name
    Xenotholos Gold-Morgan et al. 1994	validly published under the ICN (Botanical Code)	correct name

Parent taxon: Chroococcales corrig. Ardissone 1886

Assigned by: Hoffmann L, Komárek J, Kastovsky J. System of cyanoprokaryotes (cyanobacteria) - state in 2004. Algological Studies 2005; 117:95-115. 🇱🇺

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Record number: 6115