Hmm, looks like it could be hangianum to me, but maybe that's wishful thinking. It is lovely, regardless. I have a small hangianum X glaucophyllum which I hoping will be similar.
To me it looks like hangianum, but hangianum crosses are not only new, but basically unknown in the US, as there are no legal blooming crosses...so I would make my assumption based on the darker, yellower/amber color than I would expect from emersonii....Take care, Eric
to me I see only some hangianum influence, nothing that makes me think of emersonii
quite a lot of hybrids were made with hangianum in Europe at a time it was still officially illegal, therefore they were declared as emersonii crosses ( legal at this time)