When out with the dog the other day I came across the most beautiful aroma! The only thing I could see in bloom was this... A quick look in my wildflower book suggests it's Marsh Trefoil aka Bogbean or Buckbean. None of the descriptions mentions the perfume which makes me wonder if I've got the right plant. Anyone able to put me wise please? Not come across it on this path before in 6 years of walking here.