Principal originators and introducers
Referred to in the Register and Checklist
- A
- ‘Aldebert Fr.’
- ‘Ambrose UK.’
- ‘Ander H. Ger.’
- ‘Anderson NZ.’
- ‘Andrade Aust.’
- ‘Andrea R & R USA.’
- ‘Archard UK.’
- ‘Arnold E.F. & D. Aust.’
- ‘Ashdown Forest Nurseries UK.’
- ‘Ashfield UK.’
- ‘Ashworth UK.’
- ‘Asmussen Denmark’
- ‘Attfield, Kenneth Aust.’
- ‘Aubrey, John UK.’
- ‘Axelson USA.’
- ‘Ayres UK.’