References for Sarraceniaceae
Cody, W.J., and S.S. Talbot. 1973. The pitcher plant Sarracenia purpurea L. in the northwestern part of its range. Can. Field-Nat. 87:318-320.
Krajina, V.J. 1968. Sarraceniaceae, a new family for British Columbia. Syesis 1:121-124.
Wherry, E.T. 1933. The geographic relations of Sarracenia purpurea. Bartonia 15:1-6.

Source for the Reference Lists

George W. Douglas, Del Meidinger and Jim Pojar. 1998-2002. Illustrated Flora of British Columbia.