Brad talked a lot about this in his seedling threads over the winter. He was showing certain recent Keppel iris, all bred from a cross of his which has ideal branching though the flower of that particular seedling is nothing special. There are pictures and detailed explanations. I recommend anyone looking for a tutorial on the issue look up his posts - besides his seedling pics are awesome. The view of the masters of iris breeding is you want to start with good branching, because that is the hardest thing to breed in if you don't have it, he said.
