Access Resource - Global Biodiversity Information Facility

107 The naming of organisms (and plant communities)
counted as the names in a binomen or trinomen. (2) (bot., unoff.) a
name placed in brackets (parentheses) between the name of genus
and its specific epithet to indicate the subgenus or section to which
the species belongs (e.g. Ranunculus (Batrachium) aquatilis); such
names are for information and not part of a binary name.
interpretotype: (zool., unoff.) a specimen considered by the author of the
name to belong to a taxon he or she described; an authentic
specimen (q.v.).
interrupted publication: (unoff.) of a publication issued in parts over a
period of time.
interspecific: (bot.) of a hybrid between species referred to the same genus:
see nothospecific.
intertaxon: (bot., unoff.) a hybrid between two taxa, e.g. two genera or two
species.
intra-: prefix, between; see also infra-.
intrageneric: see infrageneric.
intraspecific: see infraspecific.
introducer: (cult. pl.) the person or organization who first distributes a
cultivar.
intuotype: (zool., unoff.) a specimen considered probably to be a
nomenclatural type but not yet proved to be so.
invalid: (1) (bot., prok.) used colloquially of names that are not validly
published according the Code, and hence, strictly speaking, not
names. (2) (zool.) of an available name, one which is either (a)
objectively invalid (i.e. either is a junior homonym or a junior
objective synonym of a potentially valid name, or must be rejected
under the provisions of the Code, or has been suppressed by the
Commission), or (b) is subjectively invalid (because it is considered
subjectively to be a junior synonym or to be inapplicable to a
particular taxon). (3) (zool., unoff.) of a nomenclatural act, one that
is not in accordance with the Code; i.e. equivalent of incorrect
(prok., bot.). (4) (zool., unoff.) of a taxon, one not recognized as
taxonomically distinct, at least at the rank in question. See also
quotation marks.