Not so easy Sue, but it's done. A. bicolor was easy to delete after going to various DB. A. x bicolor is accepted by both The Catalog of Life/ITIS and The Plant List/Kew. Fine so far. A. x cammurum is accepted as well, ARS-GRIN, The Plant List/Kew. In looking up Aconitum x cammurum 'Bicolor' however it gets interesting. The RHS DB notes A. x bicolor as a synonym of A. x cammurum 'Bicolor' with a reference to The Garden 2005, which is earlier than the ITIS reference for acceptance, 2011.
What I've done is left one DB entry:
Aconitum X bicolor: accepted
Also Sold As: Aconitum x cammurum 'Bicolor'
Monkshood (Aconitum x bicolor)
