Betula "Summer cascade"

It says.
I think I may have mentioned going to take out a Mortgage on a double Hepatica (Japonica) and, finding none in stock, we left with a tree, a Helenium and a Roscoea instead.
I'm used to varietal names coming after the customary:-
"King Peter Can Operate For Giant Steamrollers"
We were after a "Betula pendula 'Youngii" (Youngii being varietal)
This label says "Leaves, Mid-green turning yellow in autumn" USUAL "Utilis stem giving the best white bark" UNUSUAL:
our last Utilis had fairly upright branches. "Catkins produced in the spring" USUAL etc. u.s.w.
I wonder if it's a sport, or accidental pendula/youngii X Utilis?

10th Aug 2022 - Decided on another "Series" - Next in line.