I was given some seed at a recent swap meet. The gardener told me the name of the bean is "Perignon" but I haven't been able to find reference under that spelling. The distinguishing feature of this is that the seed she gave me was mixed between black beans and a bean that is medium brown with black markings. She said that the beans came out of the pod like that. I know this isn't much to go on but I am deciding whether it is worth planting them and probably won't unless I can identify. Any wild guesses?? Thanks!