you can realy find sometimes white - flowered Pinguicula in the wild; the
same phenomen I have seen at some very few plants of P. leptoceras in
Austria. At CP's I know this phenomen also from several other species,
like P. moranensis ('alba'), Byblis gigantea, Drosera capensis ..... ,
it's a genetic defect like albinos at humans.
Bye
Joe N.