Name: Radaisia Sauvageau 1895

Category: Genus

Proposed as: gen. nov.

Etymology: Ra.dai’si.a. N.L. fem. n. Radaisia, referring to Radais

Gender, pronunciation: feminine (stem: Radaisi-), ra-DAI-si-a

Type species: Radaisia cornuana Sauvageau 1895

Valid publication: Sauvageau C. Sur le Radaisia nouveau genre de Myxophycée. Journal de Botanique 1895; 9:372-376.

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

Taxonomic status: correct name

• Notes:
  • 🧕 Geitler (1925) assigned this genus to the family Pleurocapsaceae Geitler 1925. Publication: Geitler L. Synoptische Darstellung der Cyanophyceen in morphologischer und systematischer Hinsicht. Beihefte zum Botanischen Centralblatt 1925; 41:163-294.
  • 🧕 Komarek et al. (1975) assigned this genus to the subfamily Hyelloideae Komárek et al. 1975. Publication: Komárek J, Ludvik J, Pokorny V. Cell structure and endospore formation in the blue-green alga Chroococcidiopsis. Arch. Hydrobiol. Suppl. 1975; 46:205-223.
  • 🧕 Strunecky et al. (2023) assigned this genus to 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.
  • 🚋 The type species of this genus has alternatively been placed in the genus Pleurocapsa Thuret 1885. Publication: Bourrelly P. Les algues d'eau douce. Initiation à la systématique. Tome III: Les Algues bleues et rouges. Les Eugléniens, Peridiniens et Cryptomonadines. Boubée & Cie, Paris, 1970.
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Badaisia"; "Hadaisia"; "Radaista"; "Readaisia".
  • 🎰 The BRCs most frequently used for deposits in this group are: UC: 4.
  • 🧍 Komarek et al. (2014) treated Hyellaceae as synonym of the younger Pleurocapsaceae but assigned this genus to Hyellaceae in the hierarchical classification. Publication: Komárek J, Kastovsky J, Mares J, Johansen JR. Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach. Preslia 2014; 86:295-335.
  • 🧍 Pittman et al. (1991) suggested the abbreviation "RDSA" 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: 10
Number of child taxa with a validly published name, including synonyms: 14
Total number of child taxa: 14

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Radaisia clavata Setchell and Gardner 1918	validly published under the ICN (Botanical Code)	correct name
    Radaisia confluens Gardner 1927	validly published under the ICN (Botanical Code)	correct name
    Radaisia cornuana Sauvageau 1895	validly published under the ICN (Botanical Code)	correct name
    Radaisia epilithica Ercegović 1957	validly published under the ICN (Botanical Code)	correct name
    Radaisia epiphytica Setchell and Gardner 1918	validly published under the ICN (Botanical Code)	correct name
    Radaisia epiphytica (Gardner 1927) Gardner 1932	validly published under the ICN (Botanical Code), illegitimate name, later homonym	synonym
    Radaisia gardneri Komárek and Anagnostidis 1995	validly published under the ICN (Botanical Code)	correct name
    Radaisia gigas Geitler 1933	validly published under the ICN (Botanical Code)	synonym
    Radaisia gomontiana Sauvageau 1895	validly published under the ICN (Botanical Code)	correct name
    Radaisia laminariae Setchell and Gardner 1918	validly published under the ICN (Botanical Code)	synonym
    Radaisia pusilla Weber-van Bosse 1926	validly published under the ICN (Botanical Code)	correct name
    Radaisia subimmersa Setchell and Gardner 1918	validly published under the ICN (Botanical Code)	synonym
    Radaisia violacea Frémy 1930	validly published under the ICN (Botanical Code)	correct name
    Radaisia willei Gardner 1927	validly published under the ICN (Botanical Code)	correct name

Parent taxon: Hydrococcaceae Kützing 1843

Assigned by: Hoffmann L, Komárek J, Kaštovský J. System of cyanoprokaryotes (cyanobacteria) – state in 2004. Algol. Stud. 2005; 117:95-115.

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Record number: 6456