Marilyn,
I have 'Tristesse' and it's lovely but not a calcareum. Mine came from Fernwood and is finally making a nice clump. Think it should be an interesting parent as it has such an unusual blend of colors.
The tectorums are mostly tetraploid and are generally bigger rosettes. The calcareums are diploids and grow mainly on calcareous soil in the wild although I don't find that they mind my acid soil here either. The blossoms on calcareums are nearly white, just a touch of pink at the base of the petal. They flower infrequently for me although they did better in MA.
My favorite calcareums are 'Extra' and from Ceuse. Both quite different.
OK back to book proofing... This is the worst part of publishing a book! Am sure the neighbors think I'm crazy as i'm reading my prose OUT LOUD to try and catch mistakes. It's 192 pages long so a lot of reading.
WINDY here but the power has stayed on. My new patio furniture went flying across the yard but I retrieved it next to the deer fence!
Kevin