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44 Terms used in Bionomenclature
produced by interactions of the same fungus but different
photosynthetic partners; see also hybrids, mechanical.
chironym: (zool., unoff.) an unpublished name; a manuscript name.
chirotype: (zool., unoff.) the specimen on which an unpublished name is
based; see also cheirotype, quirotype.
chorotype: (1) (palaeo. zool., unoff.) a fossil specimen from the same
stratum as the type, but from a different locality. (2) (zool., unoff.) a
local type.
chresonym: (unoff,) proposed for citations of places of publication of a
name later than the one in which the name was originally
established; i.e. later usages of a name following the correct author
citation and place of publication of the name itself (a practice
sometimes used to indicate works which have fuller descriptions or
a changed circumscriptions).
chromosomotype: (zool., unoff.) a type specimen of a new species known
only from its chromosome smear because the remainder of the
specimen was discarded; see also crickotype.
chronospecies: (palaeo., unoff.) a species represented in more than one
geological time horizon. (2) (palaeo., unoff.) the successive species
replacing each other in a phlyetic lineage which are given ancestor
and descendent status according to the geological time sequence.
circulus: (plaeo., unoff., obsol.) proposed as a designation for an ill-defined
assemblage of approximatey isochronous specimens that it is either
inconvenient or impossible to distribute among well-defined genera
or species.
circumscribe: to make a circumscription (q.v.).
circumscription: the diagnostic limits of a taxon, which separate the
individuals that belong to it from all other individuals in the opinion
of an author; the circumscription adopted by a particular author may
be determined by study of the descriptions, accounts of the range of
variation, cited synonymy, cited specimens including types, and any
other comments made by the author in the protologue (q.v.).