We have a bed of species daylilies against a shed, and each year a very pretty vine grows up at the back of the bed. It's a perennial weed, with several vines coming up; I usually just pull, and they break off below the level of the lily leaves. One year I let it grow, thinking it might flower. I suppose it did flower, but it wasn't anything I noticed --however, really large seed pods formed. They were kind of green and lumpy, somewhat spherical. I was worried about it spreading, so I yanked the vines at that point.
It's back again, and I took a couple of pictures of it. I'm wondering if anyone can tell what it is from these photos? This first one is closer, showing the shape of the leaves. The second photo shows a growing tip. It has quite a thick stem, and those pretty little curly things. Does it look familiar to anyone?