While waiting at a bus stop next to the Arbutus Greenway - an old railway line - I noticed some leaves that seemed out of place amongst the bramble. Upon closer inspection, it turned out to be from a grape vine which I assume had grown from seed from a passerby. It had managed to intermingle with the blackberry, climb some 20-30' up a nearby tree, and produce fruit in doing so. I have to applaud its tenacity. I've seen wild apple trees before but not a grape vine. What plants have you seen in an unexpected place?