Possible Clues:

• Power to attract by personal charm
• Charm everybody on the river
• Charm everyone with a flower
• Attraction of each and every river
• Magnetic quality
• Come-hither quality
• Charm of wild laurel
• A number rule out showing charm
• Temptation of a solution when 100 is divided by 2?
• How charming for 17 across to get to rue this!