Just for fun, I researched the genetics of this cross all the way back to the species level. This is a 9th generation plant.
It's 《{[((callosum x(callosum x(callosum x lawrenceanum))) x (callosum x lawrenceanum)) x (((callosum x (lawrenceanum x mastersianum)) x (callosum x lawrenceanum))] x [((callosum x lawrenceanum) x (barbatum x lawrenceanum)) x ((callosum x (callosum x( callosum x lawrenceanum))) x (callosum x (callosum x lawrenceanum)))]} x {[((lawrenceanum x mastersianum) x ( callosum x lawrenceanum)) x callosum]}》X
《callosum x {[((callosum x (callosum x (callosum x lawrenceanum))) x ( callosum x ( callosum x lawrenceanum))) x ((callosum x curtisii) x (((barbatum x sukhakulii) x purpuratum ) x callosum)] x [(((mastersianum x (callosum x acmodontum)) x (callosum x lawrenceanum)) x ((( callosum x lawrenceanum ) x ( barbatum x lawrenceanum )) x callosum) x ((callosum x lawrenceanum) x (( callosum x (lawrenceanum x mastersianum)) x (callosum x lawrenceanum)))]}》
I think I got the brackets right .
callosum- 69.921875%
lawrenceanum- 19.921875%
mastersianum- 4.6875%
barbatum- 2.34375%
curtisii- 1.5625%
purpuratum- .78125%
sukhakulii- .390625%
acmodontum- .390625%
Seems an awful lot of fuss to make something that's 90% callosum & lawrenceanum lol.
Strangely enough there are hundreds of 90% callosum/lawrenceanum hybrids, (hence the 'Maudiae' epithet), but that remaining 10% makes for huge differences and variation.
Impressive flatness to that, I am interested what the next blooming will reveal