I love seeing the photo comparisons, and phenotypic similarities as far as bloom goes. I've enjoyed this thread very much.
As a forum member who grows many hundreds of TB's, including nearly all of the ones pictured, I find that similarity in bloom color/pattern between different cultivars is where alot of the similitude ends. There could be/and are, significant differences in growth habit, flower form, bud count, hardiness, branching, vigor, disease resistance. Also, even small differences in color/pattern, can be appreciated and enjoyed, if they were intentionally planted together, (or unintentionally) like i do frequently.
If anything, this thread and its photo comparisons should be an instructive visual tutorial in regards to hybridizers selecting and choosing seedlings for introduction, especially introducing into crowded color schemes and pattern classes -- i.e, whites, blues/lavenders, cream/yellow "Debby Rairdon" types, amoenas, and reverse blue bitones, and purples, purple plics ....
For example, this seedling of mine -- Wintery Sky X Cherished Friendship
38" high, 2 branches plus spur, 7- 9 buds, sometimes 10, great substance, flower form, and growth habit. But it'll never be introduced........ why?
...... Too similar to many others in this color class, PLUS, this seedling literally blooms with the SDB's!!! making it a poor choice for anyone, but the south and desert southwest locales. However its many good traits will be used to create other seedlings, different from this one hopefully with some unique traits, colors, form, etc.
