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85 The naming of organisms (and plant communities)
graft hybrid: (obsol.) see graft-chimaera.
graft-chimaera, [graft, graft hybrid]: (cult. pl.) a plant consisting of
tissue from two or more different taxonomic units in intimate
association, effected by grafting; named in a parallel manner to
hybrids using the sign “+” with either the names of the parents or a
condensed formula.
grafting: (cult. pl.) the (usually deliberate) fusion of tissue from two or
more different plants.
grammatic agreement: adjectives given the inflexion appropriate to the
gender, number and case of the noun to which they apply; pronouns
which have an inflexion appropriate to the gender and number of the
noun they replace.
graphic process: a method by which a large number of identical copies are
prepared from a single original or master copy other than
mechanically; (bot.) this excludes carbon copies.
graphocultype: (unoff.) the first description or photograph or drawing of
the holocultype (q.v.), in the absence of the culture of a particular
microorganism.
graphotype: (zool., obsol.) a preoccupied type, i.e. one on which a name
has previously been based.
Greek: as used in bionomenclature, generally refers to ancient and not
modern Greek.
greges: (cult. pl.) the nominative plural form of grex; grexes.
grex, [gx, gr.]: (1) (cult. pl.) a type of group used in orchid nomenclature
applied to the progeny of an artificial cross from specified parents.
(2) (cult. pl., unoff.) a subsidiary unit for the classification of
variability within subspecies.
group: (1) (prok.) an informal taxon, based upon antigenic analysis,
consisting of an assemblage of serotypes (q.v.). (2) (zool.) an
assemblage of coordinate taxa (e.g. genus-group). (3) (cult. pl.) a
formal category denoting an assemblage of cultivars, individual
plants, or assemblages of plants on the basis of defined similarity;
Gp. (4) (vir.) a viral taxon of uncertain rank, as yet not designated
either as a family or as a genus. (5) (unoff.) a non-committal name