Ban- vs zan-giku.

[Mathieu Capel]

There is a nuance between both "late chrysanthemums" : "bangiku" means
chrysanthemums that blooms after the other, some kind of late
schedule... "zangiku", chrysanthemums that remain in bloom after most
of the other ones, at the end of autumn. That is, the first one would
be for flowers which blooms late, the second one, for flowers which
"falls" late.
Well in fact it could be that both chrysanthemums are the same anyway...

Mathieu Capel
Paris