The International Cultivar Registration Authority (ICRA) for Nerine is the Nerine and Amaryllid Society. Mr Barrie Ward is the Registrar. barrieward@aol.com This page explains what they do http://nerine.org.uk/icra.html I haven't found a list yet. Since they began only a few years ago, I imagine it will take them a long time to make one. Diane Whitehead