Grafting growth in the vascular cambium. Occasionally, a so-called "graft hybrid" or more accurately graft chimera can occur where the tissues of the stock continue to grow within the scion. Such a plant can produce flowers and foliage typical of both plants as well as shoots intermediate between the two. The best-known example this is probably +"Laburnocytisus" 'Adamii', a graft hybrid between "Laburnum" and "Cytisus", which originated in a nursery near Paris, France in 1825. This small tree bears yellow flowers typical of "Laburnum anagyroides", purple flowers typical of "Cytisus purpureus" and curious coppery-pink flowers that show characteristics of both "parents".
Laburnum Avenue three-quarter diamond interchange. The interchange includes a ramp from Laburnum Avenue to southbound I-195 and ramps to Laburnum Avenue from northbound I-195 and eastbound I-64. The interchange serves as Laburnum Avenue's northern terminus; the highway ends at an entrance to CSX's Acca Yard. Laburnum Avenue is maintained by the Virginia Department of Transportation between SR 895 and SR 5. The remainder of the highway is maintained by Henrico County and the city of Richmond within the respective jurisdictions. Laburnum Avenue is a part of the main National Highway System for its entire length. Laburnum Avenue Laburnum Avenue is a C-shaped