Bananas are actually herbs, and it is the banana that is the forbidden "fruit" in the Qur'an. In the Bible the fruit from the Tree of Knolwedge is NOT specifically named -- the tradition of it being an apple came much later.
My husband taught me a few Latin phrases to mangle from time to time for dramatic effect although my Rom plays off of that "they originally came from Egypt" type-schtick.
A lot of your larger fabric retail store chains do carry it, sometie sin bulk -- aroudn here in Minneosta we find it at a Ben Franklin's or a Jo-Ann Fabrics store.
Good hunting!