Name: Neisseria flava Bergey et al. 1923 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: fla’va. L. fem. adj. flava, yellow

Gender: feminine

Type strain: NRL 30,008; NRL 30008

See detailed strain information at

16S rRNA gene: HF558370 Analyse FASTA

Effective publication: Bergey DH, Harrison FC, Breed RS, Hammer BW, Huntoon FM. Bergey's Manual of Determinative Bacteriology, 1st ed. The Williams & Wilkins Co, Baltimore, 1923.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • According to Ludwig et al. (2021), this "sequence is a true member of the Moraxella sensu stricto, and the species is susceptible to being reclassified". Publication: Ludwig W, Viver T, Westram R, Francisco Gago J, Bustos-Caparros E, Knittel K, Amann R, Rossello-Mora R. Release LTP_12_2020, featuring a new ARB alignment and improved 16S rRNA tree for prokaryotic type strains. Syst Appl Microbiol 2021; 44:126218.
  • Yarza et al. (2013) expected for accession HF558370, originating from the alleged type-strain deposit CCUG 24961, an affiliation with Neisseriaceae (Betaproteobacteria) but observed an affiliation with Moraxellaceae (Gammaproteobacteria) and 99.9% similarity against Moraxella caviae. Publication: Yarza P, Sproer C, Swiderski J, Mrotzek N, Spring S, Tindall BJ, Gronow S, Pukall R, Klenk HP, Lang E, et al. Sequencing orphan species initiative (SOS): Filling the gaps in the 16S rRNA gene sequence database for all species with validly published names. Syst Appl Microbiol 2013; 36:69-73.
  • The 16S rRNA gene sequence of the type strain shows an unexpected affiliation with the family Moraxellaceae (99.9% similarity against Moraxella caviae). Publication: Yarza P, Sproer C, Swiderski J, Mrotzek N, Spring S, Tindall BJ, Gronow S, Pukall R, Klenk HP, Lang E, et al. Sequencing orphan species initiative (SOS): Filling the gaps in the 16S rRNA gene sequence database for all species with validly published names. Syst Appl Microbiol 2013; 36:69-73.
  • The full TRBA 466 classification is: risk group = 1, note = "+".

Parent taxon: Neisseria Trevisan 1885 (Approved Lists 1980)

Assigned by: Bergey DH, Harrison FC, Breed RS, Hammer BW, Huntoon FM. Bergey's Manual of Determinative Bacteriology, 1st ed. The Williams & Wilkins Co, Baltimore, 1923.

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Record number: 784466