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109 The naming of organisms (and plant communities)
distinctive, an isolate may be considered as a strain (q.v.) or
accorded other infraspecific designation. (2) the action of obtaining
a growing culture of a microorganism separate from a host or
habitat.
isolectotype: a duplicate specimen of a lectotype.
isoneotype: a duplicate specimen of a neotype.
isonym: (1) (bot., unoff.) proposed for one of two homotypic
orthographically identical names published by different authors; e.g.
two authors making the same combination based on the same type; a
homotypic synonym (q.v.). (2) (obsol.) one of two or more names
(i.e. new names or combinations) based on the same nomenclatural
type; a homotypic synonym (q.v.).
isoparatype: a duplicate specimen of a paratype.
isospecies, [isosp.]: (cult. pl., unoff.) a category for the designation of a
species distinguished only by physiological characters.
isosyntype: a duplicate of a syntype, not cited in the protologue (if so cited
it would be a syntype in its own right).
isotype, [isotypus]: (1) (bot.) a duplicate specimen of the holotype; i.e. a
part of the single collection or gathering which included the
holotype, but not the holotype itself. (2) (zool., unoff.) one of two or
more forms common to different countries.
isotypical: (zool., unoff.) of generic names, ones based on several
congeneric but heterotypic species.
isovarietas, [isovar.]: (cult. pl., unoff.) a category for the designation of a
variety distinguished only by physiological characters.
-itae: (bot., unoff) a suffix suggested to be used as a termination for names
of uncertain taxonomic rank.
italic: the printer’s slanting type face often used to demarcate formal
scientific names in publications, or ones in a different language from
the main text (most commonly if Latin); scientific names in the rank
of genus and below are generally written in italic script; practice at
the rank of family and above other ranks varies under the different
Codes: (phyl.) requires scientific names at all ranks to be italicised;
(bot., prok.) italicise scientific names at all ranks in the Codes