Name: Microtetraspora flexuosa (Meyer 1989 ex Cross and Goodfellow 1973) Kroppenstedt et al. 1991

Category: Species

Proposed as: comb. nov.

Basonym: Actinomadura flexuosa (ex Cross and Goodfellow 1973) Meyer 1989

Etymology: flex.u’o.sa. L. fem. adj. flexuosa, full of turns or windings, tortuous, flexuous, referring to the morphology of the spore chains

Gender: feminine

Type strain: ATCC 35864; BCRC 12531; CIP 107358; DSM 43186; DSM 44514; IFO 14349; IMET 9552; JCM 3056; KCC A-56; KCTC 9270; NBRC 14349; NRRL B-24348; Strain K1132

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: MT760392 Analyse FASTA

Effective publication: Kroppenstedt RM, Stackebrandt E, Goodfellow M. Taxonomic revision of the actinomycete genera Actinomadura and Microtetraspora. Syst. Appl. Microbiol. 1990; 13:148-160.

IJSEM list: Anonymous. Validation list no. 36. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1991; 41:178-179.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Thermopolyspora flexuosa (Meyer 1989 ex Cross and Goodfellow 1973) Goodfellow et al. 2005

Risk group: 1

• Synonyms:

  • Name	Kind
    Nonomuria flexuosa (Meyer 1989 ex Cross and Goodfellow 1973) Zhang et al. 1998	homotypic synonym, inaccurate spelling
    Actinomadura flexuosa (ex Cross and Goodfellow 1973) Meyer 1989	homotypic synonym, validly published under the ICNP
    Thermopolyspora flexuosa (Meyer 1989 ex Cross and Goodfellow 1973) Goodfellow et al. 2005	homotypic synonym, validly published under the ICNP
    Nonomuraea flexuosa corrig. (Meyer 1989 ex Cross and Goodfellow 1973) Zhang et al. 1998	homotypic synonym, validly published under the ICNP

• Notes:
  • Microtetraspora flexuosa is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Microtetraspora.
  • "Thermopolyspora flexuosa". Publication: Goodfellow M, Maldonado LA, Quintana ET. Reclassification of Nonomuraea flexuosa (Meyer 1989) Zhang et al. 1998 as Thermopolyspora flexuosa gen. nov., comb. nov., nom. rev. Int J Syst Evol Microbiol 2005; 55:1979-1983.

Parent taxon: Microtetraspora Thiemann et al. 1968 (Approved Lists 1980)

Assigned by: Kroppenstedt RM, Stackebrandt E, Goodfellow M. Taxonomic revision of the actinomycete genera Actinomadura and Microtetraspora. Syst. Appl. Microbiol. 1990; 13:148-160.

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Record number: 778247