Wow, Janet! Astonishing!
Senna angulata var. miscadena does look a perfect match indeed, there is only one problem, it seems to be a shrub of only 1,5 tall.
The alternative, Senna angulata instead can grow into a large tree according to this info:
http://www.gardening.eu/arc/pl...
So maybe it would be safer to chose the last one?
Thanks so much for your hard work!