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".
HMS Laburnum (1915) HMS Laburnum (1915) HMS "Laburnum" was a Royal Navy sloop built by Charles Connell and Company, Scotstoun. She was scuttled during the fall of Singapore in 1942. She was laid down at the Scotstoun yard of Charles Connell and Company in February 1915, launched on 10 June 1915 and completed in August 1915. The "Acacia"-class fleet sweeping sloops were adapted for escort work, minesweeping and as decoy warships. "Laburnum" joined the First Sloop Flotilla on commissioning. On 4 September 1915, the passenger liner was torpedoed without warning by the German submarine southwest of Queenstown (now called Cobh) in the south