+Laburnocytisus 'Adamii' is an example of graft-chimaera
In horticulture, a graft-chimaera may emerge in grafting at contact of rootstocks and scion, and will have properties the same as their "parents". A graft-chimaera is not a true hybrid, but is a mixture of cells, each with genotypes of their "parents", which are chimeras.
Propagation is only made through cloning.
Nomenclature[]
Article 21 of the International Code of Nomenclature for Cultivated Plants stipulates that a graft-chimaera can be indicated by:
- a formula with the names of both parents in alphabetical order, which are joined by a plus sign (+).
- Crataegus + Mespilus
- a name:
- if the "parents" belong to different genera, a name may be formed by joining both together. This name will not be identical to a generic name published under the International Code of Botanical Nomenclature. An example is +Crataegomespilus, which is a graft chimera which may also be indicated by its formula, Crataegus + Mespilus. This name is different from ×Crataemespilus, which is a true hybrid between the same species, Crataegus and Mespilus.
- if both the "parents" belong to the same genus, the graft-chimera might be given a cultivar name. An example is Syringa 'Correlata', which is a graft-chimaera between Syringa vulgaris (the common lilac), and Syringa × chinensis (the rouen lilac). No plus sign is used because both of the species belong to the same genus.
Graft-chimaeras cannot have species names, because it is simultaneously two species. Although +Laburnocytisus 'Adamii' is sometimes seen written as a species (+Laburnocytisus adamii), this is incorrect.