Did I see that when I was with you? I have not learned to recognize it yet, though I posted it for ID last year, where there's quite a bit written about it: Identification: Japanese knotweed and other invasive knotweeds, where the original posting is about this species, not Japanese knotweed. I'll have to go visit it again. I'm sure it's still there.
Yes, we did see this liana at UBC, but I have not clear picture(this one), I found I think the same plant in our White Rock area, I surprise that I had quite good picture of such small flowers
