Here I took the time and was able to make the graph joining sizes, leaf shapes and distribution of the populations of wild mandarins and c. Ichangensis. On the mandarin map, the black triangle is where mangshanyeju was found as I remember. notice that it almost overlaps the Citrus Ichangensis "SS" sample.
I want to clarify so that there is no confusion, this is not "the truth" because that is not how science works, it is a graphic summary of the conclusions of all the research works that I added to this topic. They are not my conclusions, they are conclusions of the researchers I cited, there may always be new research or some from other researchers that can contrast something. I hope my effort is beneficial to you.