I have spent a long time tonight trying to figure out what these flowers are that I found next to the sidewalk on Lagoon Drive in Stanley Park. I have finally decided they are Petasites albus, white butterbur, male plants. Yes? I did notice the orbicular leaves near each plant, was going to photograph them, but decided they were so different from the other "leaves" that they had to be a separate plant. I think now that they are the leaves, and those things with the parallel veins are some other structure. The flowers here don't seem to open more than this - there were several plants clearly past their prime that had flowers no more opened.