Binomial name Prunus X yedoensis
A hybrid cherry of unknown origin, probably between Prunus speciosa as father plant and Prunus pendula as mother.It occurs as a natural hybrid in Japan and is now one of the most popular and widely planted cultivated flowering cherries in temperate climates worldwide. 
Intergeneric hybrids
× Cuprocyparis leylandii
Leyland cypress
Family
Cupressaceae
Genus
× Cuprocyparis are large, very fast-growing evergreen trees of narrowly conical or columnar habit, with tiny scale-like leaves in dense sprays, and small spherical cones.Is now a very unpopular tree, as it is not very easy kept in control, and when pruned will not regenerate well.
Chimera ( 2 plants – one tree)
+Laburnocytisus adamii The plus sign (+) indicates its unusual origin. The plant can also be described by the formula Laburnum anagyroides + Chamaecytisus purpureus.
A small tree which is a graft-chimaera between two species, a laburnum, Laburnum anagyroides, and a broom, Chamaecytisus purpureus ( Cytisus purpureus), which bears some shoots typical of the one species, some of the other, and some which are a peculiar mixture of both “parents”. This binomial name is written as if it were one species, but strictly speaking it is not one species but two.