Okay, new idea. If you fold it vaguely along those lines then you see at the bottom you are just left with the ivy, right?
Don't those leaves look a little too ....regular? They all point straight on a cardinal direciton. (N, NE, E, etc)
and the line from the book.
"And grips the flags that you are holding"
I think that's flag semaphore.
Although when I try to decode it all I get is
uxvsmadix or uxvsmndix. and neither work as a password.