
1) They are a clue as to who the kidnapper is. YOu find the same flower around the kidnappers abode.
2) What makes you think the Don doesn't already have it
Kill him and see what happens. The game will not really let you ruin itself. Some people might argue that the lava trap in the rapax area will allow you too, but it really depends on how you played (and if you can cast return to portal quick enough
)
Tools for Wizardry(r) 7