Would you be able to check back at the site for their leaves? I’m still leaning toward Petasites genus, possible the Western sweet coltsfoot (P. frigidus var.palmatus) since in the given photo, it seems there are the tiny palmate leaves near the bases of flowers stems, but only looking at these plants from a given photo I could be wrong. Best wishes! Link for Western sweet coltsfoot. Click on images to enlarge. https://www.flickr.com/search/?text=WESTERN%20SWEET%20COLTSFOOT.

The leaves of coltsfeet are very distinctive in shape. I don’t think my plant has these… Thanks!

Maybe something in the coltsfoots/butterburs (Petasites)? Varieties found in B.C. sweet cotlsfoot, arrow-leaved coltsfoot and palmate coltsfoot. If this is Petasites, I can’t tell which one this is. Check it out and see if you have a match. The included link below is for arrow-head coltsfoot (P. frigidus var. sagittatus). Best wishes! https://inside.ewu.edu/ewflora/petasites-frigidus-var-sagittatus/