Mark,
I see most of yours have more the soboliferum type rounded rosettes rather than the starry hirtum types. My seedlings of 'Emerald Spring' X allioni 'yellow form' are also showing mostly the rounded form, with only one that I would call at all starry. One of the sister seedlings to Emerald Spring that I called Emerald Fountain but never introduced had the smaller leaves and rounded form. Helen was not fond of any roller (partly because they didn't sell well) so i never explored these lines too much. Anyway I'm glad you are as they are sduch useful plants. They will grow ANYWHERE.
What parents did you use? were any hirtum types?
Kevin
