Construction has begun all along the Phase I corridor of Metro’s Silver Line. I paused to take a snap of the early activity at the site of the Wiehle Avenue station (and terminus, pending completion of Phase II). This is the view looking west, with the Reston Parkway interchange visible in the distance.
And then, at the foot of the overpass, I came across a bizarre flowering vine that I’d noticed once before in similar disturbed, suburban habitat. My Niering and Olmstead field guide IDs this as Passionflower (Passiflora sp.), with its ten tepals and five stamens. The bumblebees seem to like it.