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".
USS Laburnum (1864) USS Laburnum (1864) USS "Laburnum" (1864) was a steamer acquired by the Union Navy during the American Civil War. She was used by the Navy as a tugboat and dispatch boat to serve Union ships on blockade duty. "Lion", a screw tug built at Philadelphia, Pennsylvania, in 1864, was purchased by the Navy 24 June 1864, renamed "Laburnum", and commissioned at Philadelphia Navy Yard 7 July 1864, Acting Master A. A. Owens in command. The new tug joined the South Atlantic Blockading Squadron at Port Royal, South Carolina, 17 July 1864. For the remainder of the Civil War she operated