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Access Resource - Global Biodiversity Information Facility

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207 The naming of organisms (and plant communities)<br />

unconditionally suppressed name: (phyl.) a name that has been<br />

suppressed by the Committee on Phylogenetic Nomenclature in all<br />

phylogenetic contexts (see suppressed name); there are no<br />

conditions under which it would have precedence over any other<br />

name.<br />

undetermined: of species or specimens not identified; see indeterminate.<br />

unessential type: (obsol.) of a specimen, one figured or cited to which<br />

reference is made in a published work, but which adds nothing to<br />

the knowledge of the characters of the species; an onomatype (q.v.);<br />

also in this category are homeotypes, ideotypes, metatypes, and<br />

topotypes.<br />

uninomen: see uninominal.<br />

uninomial: (1) (not nomenclatural) a mathematical term, but frequently<br />

used in the past in the sense on uninominal (q.v.). (2) (bot., obsol.) a<br />

unitary designation (q.v.).<br />

uninominal, [uninomen; pl. uninomina]: (1) (zool.) consisting of a single<br />

name; the one word used for the name of a taxon of higher rank than<br />

the species group; see also unitary name. (2) (palaeo., unoff.) the<br />

name of a base taxon consists of one word until a genus or genus<br />

equivalent is added to aid filing as a binomial. (3) (phyl.) the second<br />

part of a species binomen that is being treated as the name of a<br />

species (though the names of clades are also uninomina); see also<br />

Lanham's method.<br />

union: (1) of taxa, see unite. (2) (phyt., obsol.) a syntaxon not accepted in<br />

the Code but equivalent to association (q.v.). (phyt., obsol.) a<br />

layered community of one or more species of similar physiogamy or<br />

life-form.<br />

unit, taxonomic: see taxonomic unit.<br />

unitary designation: (obsol.) a single word applied as a name of a species<br />

by some eighteenth century authors using non-binominal<br />

nomenclature; sometimes mistakenly considered to be generic<br />

names.<br />

unite: to combine or treat as elements of a single taxon elements that were<br />

previously considered to belong to a different taxa.

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