E-Flora BC lists 2 Butterworts, Pinguicola vulgaris being far more common than P. villosa, especially in the Yoho Park area. As far as I can tell, P. dertosensis is not native in BC.
@wcutler, good evening Wendy it appears the miss spelling after my post at 9.19pm last night was continued accidentally. Lol it does happen !!