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Referred to in the Register and Checklist
B- ‘Babouillard Fr.’
- ‘Bacher E. Swz.’
- ‘Bainbridge H. UK.’
- ‘Baker G.A. & D.M. Aust.’
- ‘Baker UK’
- ‘Balmont UK.’
- ‘Barandou’
- ‘Barba UK.’
- ‘Barba USA.’
- ‘Barclay, Edwin Aust.’
- ‘Bard USA’
- ‘Barratt UK.’
- ‘Bassett UK.’
- ‘Batey Mrs C. Aust. (Denelle Geranium Nursery)’
- ‘Bath Messrs. Ltd. UK’
- ‘Beaton, Donald UK.’
- ‘Beck UK.’
- ‘Beedham UK.’
- ‘Beedham, Mrs P.H. UK.’
- ‘Behringer USA.’
- ‘Bell Frieling USA.’
- ‘Bennett Aust.’
- ‘Bennett, Monica UK.’
- ‘Bernieau Fr.’
- ‘Bert-Rand’
- ‘Bert-Rendatier Fr.’
- ‘Bidwell, R.C. UK. Suffolk Miniature & Dwarf Specialist’
- ‘Bielby, Lenard UK. Yorkshire Specialist in Mosaic grafts’
- ‘Bird, Melva Aust.’
- ‘Blackerby, Elizabeth UK.’
- ‘Blackford UK. (Jersey)’
- ‘Blackman, Clifford E. Aust. Specie Hybrid Specialist’
- ‘Blakedown Nurseries UK.’
- ‘Blakeman, John R. Aust.’
- ‘Bode, Fred A. (SCGG) USA.’
- ‘Bodey L.A. Aust.’
- ‘Bohannon, Mrs. Helen USA.’
- ‘Bohannon, William H. USA’
- ‘Bond UK.’
- ‘Bonfiglioli It.’
- ‘Boone Gordon Can.’
- ‘Booth (Spalding)’
- ‘Bornemann Ger.’
- ‘Both Aust.’
- ‘Boucharlat Fr.’
- ‘Bouchy Fr.’
- ‘Boulanger Belg.’
- ‘Boutard Fr.’
- ‘Bower UK.’
- ‘Bowie, Mrs. Helen UK.’