This has been a hunt of all hunts! I'm gagging to see it in bloom. I just received a L. tenebrosa 'Gaston Doin' too and now the long haul of a wait to see that flower.
Wow! That is a really lovely Catt! Please post pictures when yours blooms someday. The form and contrast are really pleasing to behold! I have already looked at that picture several times! Congratulations on getting your hands on such a beauty!
Leafmite