Is this being fair dragging Chuck in? Is chromosome count a presumption on Hakone's part? .. or was he contacted to verify that? Matt Gore lists him as breeder, that's all.
I bought a lot of flasks from Chuck where he labeled parents as 4n, so I assumed they were. So it might actually be good if Chuck addressed the question. Personally I don't care one way or the other, the plants bloomed out beautiful.