Jim McKenney wrote, There is a widely grown double-flowered form of Colchicum autumnale, but >that is not 'Waterlily'. > >The parentage of Colchicum 'Waterlily' is usually given as Colchicum >autumnale 'Alboplenum' crossed with C. speciosum 'Album'. I think the >intention of the hybridizer was to get a hybrid, double, white-flowered >Colchicum bigger than C. autumnale 'Alboplenum'. Sorry, I was in error. Jane McGary