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197 The naming of organisms (and plant communities)
rank (i.e. subordinate taxa) and individual organisms; in (phyl.), taxa
may be clades or species; see taxoid, taxon name.
Taxon: official journal of the International association for Plant Taxonomy
(IAPT) in which proposals to modify the Code, or to propose the
conservation or rejection of names or works, and reports of
Committees are required to be published; from 2009, proposals
relating solely to fungi are also published in Mycotaxon.
taxon label: (unoff.) a unique, stable, text-phrase applied to an unpublished
taxon concept; the label should link the concept to reference
specimens or a locality and be in a form that is unusable as a taxon
name, e.g. Ocyptamus sp. MZH S142_2004; such informal
designations are commonly used in submissions to GenBank. The
Council of the Heads of Australian Herbaria (CHAH) proposed to
standardize these in the form “Genus name sp. Phrasename
(Voucher specimen identifier) Source” where the phrasename was
based on the locality and the source was the concept’s proposer; see
also cognomen, informal name, interim name.
taxon name: (phyl.) the word (or in pre-existing Codes, words) used to
designate a taxon.
taxon novum, [tax. n., tax. nov.]: a new taxon; sometimes used in (zool.)
when a name in a particular rank is derived from a pre-existing
generic name for the first time.
taxon vagum, [tax. vag.]: (unoff.) a name used in an uncertain rank (e.g.
Usnea [tax. vag.] implexa).
taxonomic category: a subdivision of a hierarchical system; see category.
taxonomic doubt: (prok.) of a name, one published with a question mark or
other suggestion that the author is uncertain or doubtful about it,
even if the name is accepted by the author.
taxonomic group: (1) the group in which a number of similar individuals
may be classified; a taxonomic unit. (2) a taxon or assemblage of
taxa, e.g. the taxonomic group Insecta which consists of all insects
and the taxa in which they are classified.
taxonomic hierarchy: see hierarchy, taxonomic.
taxonomic position: see position.