Unless there is some plant mislabelled as Annapurna somewhere out there, I'm not convinced. The Annapurnas I saw were of the purest white at a time when lots of other white or light pink roses in that park had pink flecks on the petals from the rain. Magnificent blooms, the most impressive ones in the huge park. Spotless, brilliant. I was so thrilled.
The blooms of 'Coeur de Neige' in my garden glow with the purest white in the midday sun. On Delbard's French website , " Les Rosiers Delbard" there are only three white roses: Annapurna (Dorblan) ,Grand Nord (Delgrard) and Sweet Love (Harmisty).
Many rose breeders introduce roses which are specifically for a different part of the world. There are Delbard roses which can be found only in Japan, for example. It is definitely not 'Annapurna', as the breeder code is distinct. If it is a regional variety, it would not be on the Delbard site. Same applies to breeders like Kordes, Tantau and Meilland.
I could have sworn I had responded to Evesmos' initial comment.
Jedmar, the Delbard website (for me) gave only the same three white roses as Evosmos has mentioned: Annapurna (Dorblan) ,Grand Nord (Delgrard) and Sweet Love (Harmisty).
The linky you have quoted is not the Delbard site, but the Australian nursery Rankins Roses, the agent for Delbard roses. The only code name I could find is contained in the HMF main page linky for Diana Sargeant's Silkies Rose Farm & Rosesalesonline in Clonbinane, Victoria, Australia.
Maybe that is the answer. Thanks anyway Puns 'n' Roses - am glad you responded. There is a lot of renaming that goes on in Australia, but I think that might be the case for many countries.